MercuryDPM  Trunk
MercuryBase Class Referenceabstract

This is the base class for both Mercury2D and Mercury3D. Note the actually abstract grid is defined in the class Grid defined below. More...

#include <MercuryBase.h>

Inheritance diagram for MercuryBase:

## Public Member Functions

MercuryBase ()
This is the default constructor. It sets sensible defaults. More...

~MercuryBase () override
This is the default destructor. More...

MercuryBase (const MercuryBase &mercuryBase)
Copy-constructor. More...

void constructor ()
This is the actual constructor, it is called do both constructors above. More...

void hGridActionsBeforeTimeLoop () override
This sets up the broad phase information, has to be done at this stage because it requires the particle size. More...

void hGridActionsBeforeTimeStep () override
Performs all necessary actions before a time-step, like updating the particles and resetting all the bucket information, etc. More...

Reads the MercuryBase from an input stream, for example a restart file. More...

void write (std::ostream &os, bool writeAllParticles=true) const override
Writes the MercuryBase to an output stream, for example a restart file. More...

Mdouble getHGridCurrentMaxRelativeDisplacement () const
Returns hGridCurrentMaxRelativeDisplacement_. More...

Mdouble getHGridTotalCurrentMaxRelativeDisplacement () const
Returns hGridTotalCurrentMaxRelativeDisplacement_. More...

void setHGridUpdateEachTimeStep (bool updateEachTimeStep)
Sets whether or not the HGrid must be updated every time step. More...

bool getHGridUpdateEachTimeStep () const final
Gets whether or not the HGrid is updated every time step. More...

void setHGridMaxLevels (unsigned int HGridMaxLevels)
Sets the maximum number of levels of the HGrid in this MercuryBase. More...

unsigned int getHGridMaxLevels () const
Gets the maximum number of levels of the HGrid in this MercuryBase. More...

HGridMethod getHGridMethod () const
Gets whether the HGrid in this MercuryBase is BOTTOMUP or TOPDOWN. More...

void setHGridMethod (HGridMethod hGridMethod)
Sets the HGridMethod to either BOTTOMUP or TOPDOWN. More...

HGridDistribution getHGridDistribution () const
Gets how the sizes of the cells of different levels are distributed. More...

void setHGridDistribution (HGridDistribution hGridDistribution)
Sets how the sizes of the cells of different levels are distributed. More...

Mdouble getHGridCellOverSizeRatio () const
Gets the ratio of the smallest cell over the smallest particle. More...

void setHGridCellOverSizeRatio (Mdouble cellOverSizeRatio)
Sets the ratio of the smallest cell over the smallest particle. More...

bool hGridNeedsRebuilding ()
Gets if the HGrid needs rebuilding before anything else happens. More...

virtual unsigned int getHGridTargetNumberOfBuckets () const
Gets the desired number of buckets, which is the maximum of the number of particles and 10. More...

Gets the desired size of the smallest cells of the HGrid. More...

Gets the desired size of the largest cells of the HGrid. More...

bool checkParticleForInteraction (const BaseParticle &P) final
Checks if given BaseParticle has an interaction with a BaseWall or other BaseParticle. More...

bool checkParticleForInteractionLocal (const BaseParticle &P) final
Checks if the given BaseParticle has an interaction with a BaseWall or other BaseParticles in a local domain. More...

virtual Mdouble userHGridCellSize (unsigned int level)
Virtual function that enables inheriting classes to implement a function to let the user set the cell size of the HGrid. More...

virtual std::vector
< BaseParticle * >
hGridFindParticleContacts (const BaseParticle *obj)=0
Purely virtual function that returns all particles that have a contact with a given particle. More...

void hGridInfo (std::ostream &os=std::cout) const
Writes the info of the HGrid to the screen in a nice format. More...

Public Member Functions inherited from DPMBase
void constructor ()
A function which initialises the member variables to default values, so that the problem can be solved off the shelf; sets up a basic two dimensional problem which can be solved off the shelf. It is called in the constructor DPMBase(). More...

DPMBase ()
Constructor that calls the "void constructor()". More...

DPMBase (const DPMBase &other)
Copy constructor type-2. More...

virtual ~DPMBase ()
virtual destructor More...

void autoNumber ()
The autoNumber() function calls three functions: setRunNumber(), readRunNumberFromFile() and incrementRunNumberInFile(). More...

std::vector< int > get1DParametersFromRunNumber (int size_x) const
This turns a counter into 1 index, which is a useful feature for performing 1D parameter study. The index run from 1:size_x, while the study number starts at 0 (initially the counter=1 in COUNTER_DONOTDEL) More...

std::vector< int > get2DParametersFromRunNumber (int size_x, int size_y) const
This turns a counter into 2 indices which is a very useful feature for performing a 2D study. The indices run from 1:size_x and 1:size_y, while the study number starts at 0 ( initially the counter=1 in COUNTER_DONOTDEL) More...

std::vector< int > get3DParametersFromRunNumber (int size_x, int size_y, int size_z) const
This turns a counter into 3 indices, which is a useful feature for performing a 3D parameter study. The indices run from 1:size_x, 1:size_y and 1:size_z, while the study number starts at 0 ( initially the counter=1 in COUNTER_DONOTDEL) More...

int launchNewRun (const char *name, bool quick=false)
This launches a code from within this code. Please pass the name of the code to run. More...

void setRunNumber (int runNumber)
This sets the counter/Run number, overriding the defaults. More...

int getRunNumber () const
This returns the current value of the counter (runNumber_) More...

virtual void decompose ()
Sends particles from processorId to the root processor. More...

void solve ()
The work horse of the code. More...

virtual void computeOneTimeStep ()
Performs everything needed for one time step, used in the time-loop of solve(). More...

void checkSettings ()
Checks if the essentials are set properly to go ahead with solving the problem. More...

void forceWriteOutputFiles ()
Writes output files immediately, even if the current time step was not meant to be written. Also resets the last saved time step. More...

virtual void writeOutputFiles ()
Writes simulation data to all the main Mercury files: .data, .ene, .fstat, .xballs and .restart (see the Mercury website for more details regarding these files). More...

void solve (int argc, char *argv[])
The work horse of the code. Can handle flags from the command line. More...

virtual void setupInitialConditions ()
This function allows to set the initial conditions for our problem to be solved, by default particle locations are randomly set. Remember particle properties must also be defined here. More...

virtual void writeXBallsScript () const
This writes a script which can be used to load the xballs problem to display the data just generated. More...

virtual Mdouble getInfo (const BaseParticle &P) const
A virtual function that returns some user-specified information about a particle. More...

ParticleVtkWritergetVtkWriter () const

virtual void writeRestartFile ()
Stores all the particle data for current save time step to a "restart" file, which is a file simply intended to store all the information necessary to "restart" a simulation from a given time step (see also MercuryDPM.org for more information on restart files). More...

void writeDataFile ()

void writeEneFile ()

void writeFStatFile ()

void fillDomainWithParticles (unsigned N=50)
Inserts particles in the whole domain. More...

Reads all the particle data corresponding to a given, existing . restart file (for more details regarding restart files, refer to the training materials on the MercuryDPM website).Returns true if it is successful, false otherwise. More...

The same as readRestartFile(bool), but also reads all the particle data corresponding to the current saved time step. More...

virtual BaseWallreadUserDefinedWall (const std::string &type) const
Allows you to read in a wall defined in a Driver directory; see USER/Luca/ScrewFiller. More...

Reads all data from a restart file, e.g. domain data and particle data; old version. More...

bool readDataFile (std::string fileName="", unsigned int format=0)
This allows particle data to be reloaded from data files. More...

Allows the user to read par.ini files (useful to read files produced by the MDCLR simulation code - external to MercuryDPM) More...

Reads the next data file with default format=0. However, one can modify the format based on whether the particle data corresponds to 3D or 2D data- see Visualising data in xballs. More...

Reads the next fstat file. More...

bool findNextExistingDataFile (Mdouble tMin, bool verbose=true)
Finds and opens the next data file, if such a file exists. More...

bool readArguments (int argc, char *argv[])
Can interpret main function input arguments that are passed by the driver codes. More...

bool checkParticleForInteractionLocalPeriodic (const BaseParticle &P)

void importParticlesAs (ParticleHandler &particleHandler, InteractionHandler &interactionHandler, const ParticleSpecies *species)
Copies particles, interactions assigning species from a local simulation to a global one. Useful for the creation of a cluster. More...

MERCURY_DEPRECATED FilegetDataFile ()
The non const version. Allows one to edit the File::dataFile. More...

MERCURY_DEPRECATED FilegetEneFile ()
The non const version. Allows to edit the File::eneFile. More...

MERCURY_DEPRECATED FilegetFStatFile ()
The non const version. Allows to edit the File::fStatFile. More...

MERCURY_DEPRECATED FilegetRestartFile ()
The non const version. Allows to edit the File::restartFile. More...

MERCURY_DEPRECATED FilegetStatFile ()
The non const version. Allows to edit the File::statFile. More...

FilegetInteractionFile ()
Return a reference to the file InteractionsFile. More...

MERCURY_DEPRECATED const FilegetDataFile () const
The const version. Does not allow for any editing of the File::dataFile. More...

MERCURY_DEPRECATED const FilegetEneFile () const
The const version. Does not allow for any editing of the File::eneFile. More...

MERCURY_DEPRECATED const FilegetFStatFile () const
The const version. Does not allow for any editing of the File::fStatFile. More...

MERCURY_DEPRECATED const FilegetRestartFile () const
The const version. Does not allow for any editing of the File::restartFile. More...

MERCURY_DEPRECATED const FilegetStatFile () const
The const version. Does not allow for any editing of the File::statFile. More...

const FilegetInteractionFile () const

const std::string & getName () const
Returns the name of the file. Does not allow to change it though. More...

void setName (const std::string &name)
Allows to set the name of all the files (ene, data, fstat, restart, stat) More...

void setName (const char *name)
Calls setName(std::string) More...

void setSaveCount (unsigned int saveCount)
Sets File::saveCount_ for all files (ene, data, fstat, restart, stat) More...

void setFileType (FileType fileType)
Sets File::fileType_ for all files (ene, data, fstat, restart, stat) More...

void setOpenMode (std::fstream::openmode openMode)
Sets File::openMode_ for all files (ene, data, fstat, restart, stat) More...

void resetFileCounter ()
Resets the file counter for each file i.e. for ene, data, fstat, restart, stat) More...

void closeFiles ()
Closes all files (ene, data, fstat, restart, stat) that were opened to read or write. More...

void setLastSavedTimeStep (unsigned int nextSavedTimeStep)
Sets the next time step for all the files (ene, data, fstat, restart, stat) at which the data is to be written or saved. More...

Mdouble getTime () const
Returns the current simulation time. More...

Mdouble getNextTime () const
Returns the current simulation time. More...

unsigned int getNumberOfTimeSteps () const
Returns the current counter of time-steps, i.e. the number of time-steps that the simulation has undergone so far. More...

void setTime (Mdouble time)
Sets a new value for the current simulation time. More...

void setTimeMax (Mdouble newTMax)
Sets a new value for the maximum simulation duration. More...

Mdouble getTimeMax () const
Returns the maximum simulation duration. More...

void setLogarithmicSaveCount (Mdouble logarithmicSaveCountBase)
Sets File::logarithmicSaveCount_ for all files (ene, data, fstat, restart, stat) More...

void setRotation (bool rotation)
Sets whether particle rotation is enabled or disabled. More...

bool getRotation () const
Indicates whether particle rotation is enabled or disabled. More...

void setWallsWriteVTK (FileType writeWallsVTK)
Sets whether walls are written into a VTK file. More...

void setWallsWriteVTK (bool)
Sets whether walls are written into a VTK file. More...

void setInteractionsWriteVTK (bool)
Sets whether interactions are written into a VTK file. More...

void setParticlesWriteVTK (bool writeParticlesVTK)
Sets whether particles are written in a VTK file. More...

FileType getWallsWriteVTK () const
Returns whether walls are written in a VTK file. More...

bool getParticlesWriteVTK () const
Returns whether particles are written in a VTK file. More...

Mdouble getXMin () const
If the length of the problem domain in x-direction is XMax - XMin, then getXMin() returns XMin. More...

Mdouble getXMax () const
If the length of the problem domain in x-direction is XMax - XMin, then getXMax() returns XMax. More...

Mdouble getYMin () const
If the length of the problem domain in y-direction is YMax - YMin, then getYMin() returns YMin. More...

Mdouble getYMax () const
If the length of the problem domain in y-direction is YMax - YMin, then getYMax() returns XMax. More...

Mdouble getZMin () const
If the length of the problem domain in z-direction is ZMax - ZMin, then getZMin() returns ZMin. More...

Mdouble getZMax () const
If the length of the problem domain in z-direction is ZMax - ZMin, then getZMax() returns ZMax. More...

Vec3D getMin () const

Vec3D getMax () const

void setXMin (Mdouble newXMin)
Sets the value of XMin, the lower bound of the problem domain in the x-direction. More...

void setYMin (Mdouble newYMin)
Sets the value of YMin, the lower bound of the problem domain in the y-direction. More...

void setZMin (Mdouble newZMin)
Sets the value of ZMin, the lower bound of the problem domain in the z-direction. More...

void setXMax (Mdouble newXMax)
Sets the value of XMax, the upper bound of the problem domain in the x-direction. More...

void setYMax (Mdouble newYMax)
Sets the value of YMax, the upper bound of the problem domain in the y-direction. More...

void setZMax (Mdouble newZMax)
Sets the value of ZMax, the upper bound of the problem domain in the z-direction. More...

void setMax (const Vec3D &max)
Sets the maximum coordinates of the problem domain. More...

void setMax (Mdouble, Mdouble, Mdouble)
Sets the maximum coordinates of the problem domain. More...

void setDomain (const Vec3D &min, const Vec3D &max)
Sets the minimum coordinates of the problem domain. More...

void setMin (const Vec3D &min)
Sets the minimum coordinates of the problem domain. More...

void setMin (Mdouble, Mdouble, Mdouble)
Sets the minimum coordinates of the problem domain. More...

void setTimeStep (Mdouble newDt)
Sets a new value for the simulation time step. More...

Mdouble getTimeStep () const
Returns the simulation time step. More...

void setXBallsColourMode (int newCMode)
Set the xballs output mode. More...

int getXBallsColourMode () const
Get the xballs colour mode (CMode). More...

void setXBallsVectorScale (double newVScale)
Set the scale of vectors in xballs. More...

double getXBallsVectorScale () const
Returns the scale of vectors used in xballs. More...

Set the additional arguments for xballs. More...

Returns the additional arguments for xballs. More...

void setXBallsScale (Mdouble newScale)
Sets the scale of the view (either normal, zoom in or zoom out) to display in xballs. The default is fit to screen. More...

double getXBallsScale () const
Returns the scale of the view in xballs. More...

void setGravity (Vec3D newGravity)
Sets a new value for the gravitational acceleration. More...

Vec3D getGravity () const
Returns the gravitational acceleration. More...

void setDimension (unsigned int newDim)
Sets both the system dimensions and the particle dimensionality. More...

void setSystemDimensions (unsigned int newDim)
Sets the system dimensionality. More...

unsigned int getSystemDimensions () const
Returns the system dimensionality. More...

void setParticleDimensions (unsigned int particleDimensions)
Sets the particle dimensionality. More...

unsigned int getParticleDimensions () const
Returns the particle dimensionality. More...

std::string getRestartVersion () const
This is to take into account for different Mercury versions. Returns the version of the restart file. More...

void setRestartVersion (std::string newRV)
Sets restart_version. More...

bool getRestarted () const
Returns the flag denoting if the simulation was restarted or not. More...

void setRestarted (bool newRestartedFlag)
Allows to set the flag stating if the simulation is to be restarted or not. More...

bool getAppend () const
Returns whether the "append" option is on or off. More...

void setAppend (bool newAppendFlag)
Sets whether the "append" option is on or off. More...

Mdouble getElasticEnergy () const
Returns the global elastic energy within the system. More...

Mdouble getKineticEnergy () const
Returns the global kinetic energy stored in the system. More...

Mdouble getGravitationalEnergy () const
Returns the global gravitational potential energy stored in the system. More...

Mdouble getRotationalEnergy () const
JMFT Returns the global rotational energy stored in the system. More...

Mdouble getTotalEnergy () const

Mdouble getTotalMass () const
JMFT: Return the total mass of the system, excluding fixed particles. More...

Vec3D getCentreOfMass () const
JMFT: Return the centre of mass of the system, excluding fixed particles. More...

Vec3D getTotalMomentum () const
JMFT: Return the total momentum of the system, excluding fixed particles. More...

virtual void hGridInsertParticle (BaseParticle *obj UNUSED)

virtual void hGridUpdateParticle (BaseParticle *obj UNUSED)

virtual void hGridRemoveParticle (BaseParticle *obj UNUSED)

bool mpiIsInCommunicationZone (BaseParticle *particle)
Checks if the position of the particle is in an mpi communication zone or not. More...

bool mpiInsertParticleCheck (BaseParticle *P)
Function that checks if the mpi particle should really be inserted by the current domain. More...

void insertGhostParticle (BaseParticle *P)
This function inserts a particle in the mpi communication boundaries. More...

void updateGhostGrid (BaseParticle *P)
Checks if the Domain/periodic interaction distance needs to be updated and updates it accordingly. More...

virtual void gatherContactStatistics (unsigned int index1, int index2, Vec3D Contact, Mdouble delta, Mdouble ctheta, Mdouble fdotn, Mdouble fdott, Vec3D P1_P2_normal_, Vec3D P1_P2_tangential)
//Not unsigned index because of possible wall collisions. More...

void setNumberOfDomains (std::vector< unsigned > direction)
Sets the number of domains in x-,y- and z-direction. Required for parallel computations. More...

void splitDomain (DomainSplit domainSplit)

std::vector< unsignedgetNumberOfDomains ()
returns the number of domains More...

DomaingetCurrentDomain ()
Function that returns a pointer to the domain corresponding to the processor. More...

void removeOldFiles () const

virtual void hGridGetInteractingParticleList (BaseParticle *obj, std::vector< BaseParticle * > &list)
Creates a list of neighbour particles obtained from the hgrid. More...

virtual void computeWallForces (BaseWall *w)

void setMeanVelocity (Vec3D V_mean_goal)
This function will help you set a fixed kinetic energy and mean velocity in your system. More...

void setMeanVelocityAndKineticEnergy (Vec3D V_mean_goal, Mdouble Ek_goal)
This function will help you set a fixed kinetic energy and mean velocity in your system. More...

Mdouble getTotalVolume () const
Get the total volume of the cuboid system. More...

Matrix3D getKineticStress () const
Calculate the kinetic stress tensor in the system averaged over the whole volume. More...

Matrix3D getStaticStress () const
Calculate the static stress tensor in the system averaged over the whole volume. More...

Matrix3D getTotalStress () const
Calculate the total stress tensor in the system averaged over the whole volume. More...

void writePythonFileForVTKVisualisation () const
record when the simulation started More...

## Protected Member Functions

void hGridRebuild ()
This sets up the parameters required for the contact model. More...

void hGridInsertParticle (BaseParticle *obj) final
Inserts a single Particle to current grid. More...

virtual bool hGridHasParticleContacts (const BaseParticle *obj)=0
Purely virtual function that checks if the given particle has a possible contact with any other BaseParticle in the HGrid. More...

void hGridUpdateMove (BaseParticle *iP, Mdouble move) final
Computes the relative displacement of the given BaseParticle and updates the currentMaxRelativeDisplacement_ accordingly. More...

void hGridActionsBeforeIntegration () override
Resets the currentMaxRelativeDisplacement_ to 0. More...

void hGridActionsAfterIntegration () override
This function has to be called before integrateBeforeForceComputation. More...

HGridgetHGrid ()
Gets the HGrid used by this problem. More...

const HGridgetHGrid () const
Gets the HGrid used by this problem, const version. More...

bool readNextArgument (int &i, int argc, char *argv[]) override
Reads the next command line argument. More...

Protected Member Functions inherited from DPMBase
virtual void computeAllForces ()
Computes all the forces acting on the particles using the BaseInteractable::setForce() and BaseInteractable::setTorque() More...

virtual void computeInternalForces (BaseParticle *)
Computes the internal forces on particle i (internal in the sense that the sum over all these forces is zero i.e. fully modelled forces) More...

virtual void computeInternalForce (BaseParticle *, BaseParticle *)
Computes the forces between two particles (internal in the sense that the sum over all these forces is zero i.e. fully modelled forces) More...

virtual void computeExternalForces (BaseParticle *)
Computes the external forces, such as gravity, acting on particles. More...

void computeForcesDueToWalls (BaseParticle *, BaseWall *)
Computes the forces on the particles due to the walls (normals are outward normals) More...

virtual void actionsOnRestart ()
A virtual function where the users can add extra code which is executed only when the code is restarted. More...

virtual void actionsBeforeTimeLoop ()
A virtual function. Allows one to carry out any operations before the start of the time loop. More...

virtual void actionsBeforeTimeStep ()
A virtual function which allows to define operations to be executed before the new time step. More...

virtual void actionsAfterSolve ()
A virtual function which allows to define operations to be executed after the solve(). More...

virtual void actionsAfterTimeStep ()
A virtual function which allows to define operations to be executed after time step. More...

void writeVTKFiles () const

virtual void outputXBallsData (std::ostream &os) const
This function writes the location of the walls and particles in a format the XBalls program can read. For more information on the XBalls program, see Visualising data in xballs. More...

virtual void outputXBallsDataParticle (unsigned int i, unsigned int format, std::ostream &os) const
This function writes out the particle locations into an output stream in a format the XBalls program can read. For more information on the XBalls program, see Visualising data in xballs. More...

virtual void writeEneHeader (std::ostream &os) const
Writes a header with a certain format for ENE file. More...

virtual void writeFstatHeader (std::ostream &os) const
Writes a header with a certain format for FStat file. More...

virtual void writeEneTimeStep (std::ostream &os) const
Write the global kinetic, potential energy, etc. in the system. More...

virtual void initialiseStatistics ()

virtual void outputStatistics ()

void gatherContactStatistics ()

virtual void processStatistics (bool)

virtual void finishStatistics ()

virtual void integrateBeforeForceComputation ()
Update particles' and walls' positions and velocities before force computation. More...

virtual void integrateAfterForceComputation ()
Update particles' and walls' positions and velocities after force computation. More...

virtual void checkInteractionWithBoundaries ()
There are a range of boundaries one could implement depending on ones' problem. This methods checks for interactions between particles and such range of boundaries. See BaseBoundary.h and all the boundaries in the Boundaries folder. More...

void setFixedParticles (unsigned int n)
Sets a number, n, of particles in the particleHandler as "fixed particles". More...

virtual void printTime () const
Displays the current simulation time and the maximum simulation duration. More...

virtual bool continueSolve () const
A virtual function for deciding whether to continue the simulation, based on a user-specified criterion. More...

void outputInteractionDetails () const
Displays the interaction details corresponding to the pointer objects in the interaction handler. More...

bool isTimeEqualTo (Mdouble time) const
Checks whether the input variable "time" is the current time in the simulation. More...

void removeDuplicatePeriodicParticles ()
Removes periodic duplicate Particles. More...

void checkAndDuplicatePeriodicParticles ()
For simulations using periodic boundaries, checks and adds particles when necessary into the particle handler. See DPMBase.cc and PeriodicBoundary.cc for more details. More...

void performGhostParticleUpdate ()
When the Verlet scheme updates the positions and velocities of particles, ghost particles will need an update as wel. Their status will also be updated accordingly. More...

void deleteGhostParticles (std::set< BaseParticle * > &particlesToBeDeleted)

void synchroniseParticle (BaseParticle *, unsigned fromProcessor=0)

void performGhostVelocityUpdate ()
updates the final time-step velocity of the ghost particles More...

## Private Attributes

HGridgrid
A pointer to the HGrid associated with this MercuryBase. More...

HGridMethod hGridMethod_
Indicator of which way the interactions between different levels are tested. More...

HGridDistribution hGridDistribution_
Indicator for the distribution of the sizes of the cells of different levels of the HGrid. The default is EXPONENTIAL. More...

Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the level of that particle at the current time step. This is useful to see whether a particle could have moved more than one cell. More...

Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_. More...

bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated. More...

bool updateEachTimeStep_
Boolean which indicates whether or not the cell in which a particle is must be updated every time step. More...

unsigned int hGridMaxLevels_
Unsigned integer that indicates the maximum number of levels of the HGrid. More...

Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain. More...

Public Types inherited from DPMBase

enum  DomainSplit {
DomainSplit::X, DomainSplit::Y, DomainSplit::Z, DomainSplit::XY,
DomainSplit::XZ, DomainSplit::YZ, DomainSplit::XYZ
}

Static Public Member Functions inherited from DPMBase
static void incrementRunNumberInFile ()
Increment the run Number (counter value) stored in the file_counter (COUNTER_DONOTDEL) by 1 and store the new value in the counter file. More...

Read the run number or the counter from the counter file (COUNTER_DONOTDEL) More...

static bool areInContact (const BaseParticle *pI, const BaseParticle *pJ)
Checks if two particle are in contact or is there any positive overlap. More...

Public Attributes inherited from DPMBase
SpeciesHandler speciesHandler
A handler to that stores the species type i.e. LinearViscoelasticSpecies, etc. More...

RNG random
This is a random generator, often used for setting up the initial conditions etc... More...

ParticleHandler particleHandler
An object of the class ParticleHandler, contains the pointers to all the particles created. More...

ParticleHandler paoloParticleHandler
Fake particleHandler created by Paolo needed temporary by just Paolo. More...

WallHandler wallHandler
An object of the class WallHandler. Contains pointers to all the walls created. More...

BoundaryHandler boundaryHandler
An object of the class BoundaryHandler which concerns insertion and deletion of particles into or from regions. More...

PeriodicBoundaryHandler periodicBoundaryHandler
Internal handler that deals with periodic boundaries, especially in a parallel build. More...

DomainHandler domainHandler
An object of the class DomainHandler which deals with parallel code. More...

InteractionHandler interactionHandler
An object of the class InteractionHandler. More...

CGHandler cgHandler
Object of the class cgHandler. More...

File dataFile
An instance of class File to handle in- and output into a .data file. More...

File fStatFile
An instance of class File to handle in- and output into a .fstat file. More...

File eneFile
An instance of class File to handle in- and output into a .ene file. More...

File restartFile
An instance of class File to handle in- and output into a .restart file. More...

File statFile
An instance of class File to handle in- and output into a .stat file. More...

File interactionFile
File class to handle in- and output into .interactions file. This file hold information about interactions. More...

## Detailed Description

This is the base class for both Mercury2D and Mercury3D. Note the actually abstract grid is defined in the class Grid defined below.

Todo:
Discuss if we want to remove Mercury2D and Mercury3D and template MercuryBase as the interface for the user.

Definition at line 125 of file MercuryBase.h.

## Constructor & Destructor Documentation

 MercuryBase::MercuryBase ( )

This is the default constructor. It sets sensible defaults.

Definition at line 31 of file MercuryBase.cc.

References constructor(), DEBUG, and logger.

32 {
33  constructor();
34  logger(DEBUG, "MercuryBase::MercuryBase() constructor finished");
35 }
Logger< MERCURY_LOGLEVEL > logger("MercuryKernel")
void constructor()
This is the actual constructor, it is called do both constructors above.
Definition: MercuryBase.cc:77
 MercuryBase::~MercuryBase ( )
override

This is the default destructor.

Definition at line 37 of file MercuryBase.cc.

References DEBUG, grid, and logger.

38 {
39  if (grid != nullptr)
40  {
41  delete grid;
42  grid = nullptr;
43  }
44  logger(DEBUG, "MercuryBase::~MercuryBase() destructor finished.");
45 }
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
Logger< MERCURY_LOGLEVEL > logger("MercuryKernel")
 MercuryBase::MercuryBase ( const MercuryBase & mercuryBase )

Copy-constructor.

Parameters
 [in] mercuryBase The MercuryBase that needs to be copied.

Copy constructor that copies almost all properties of the given MercuryBase into the new MercuryBase. Please note that the grid is not literally copied, but everything to make that grid is copied and the gridNeedsUpdate_ is set to true, so that the grid is made before anything else happens.

Definition at line 55 of file MercuryBase.cc.

56 {
57  grid = nullptr;
58  gridNeedsUpdate_ = true;
59
60  hGridMethod_ = mercuryBase.hGridMethod_;
62
65
67  hGridMaxLevels_ = mercuryBase.hGridMaxLevels_;
69
70  logger(DEBUG, "HGRID_base(HGrid_base& other) constructor finished.");
71 }
Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.
Definition: MercuryBase.h:368
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
Logger< MERCURY_LOGLEVEL > logger("MercuryKernel")
HGridDistribution hGridDistribution_
Indicator for the distribution of the sizes of the cells of different levels of the HGrid...
Definition: MercuryBase.h:354
unsigned int hGridMaxLevels_
Unsigned integer that indicates the maximum number of levels of the HGrid.
Definition: MercuryBase.h:396
Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain.
Definition: MercuryBase.h:404
HGridMethod hGridMethod_
Indicator of which way the interactions between different levels are tested.
Definition: MercuryBase.h:348
bool updateEachTimeStep_
Boolean which indicates whether or not the cell in which a particle is must be updated every time ste...
Definition: MercuryBase.h:382
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362

## Member Function Documentation

 bool MercuryBase::checkParticleForInteraction ( const BaseParticle & p )
finalvirtual

Checks if given BaseParticle has an interaction with a BaseWall or other BaseParticle.

Parameters
 [in] p The BaseParticle for which we want to check if there is an interaction.
Returns
A boolean which is false if there was an interaction and true if there was no interaction.

Check for the given BaseParticle if there is an interaction with any other object. First check all walls, then all particles.

Todo:
IFCD: I think it might be better if it returns true if there is an interaction.
Todo:
MX: use all reduce with the appropriate operator

Reimplemented from DPMBase.

Definition at line 588 of file MercuryBase.cc.

589 {
590 #ifdef MERCURY_USE_MPI
591  bool interaction;
592  if (NUMBER_OF_PROCESSORS == 1)
593  {
595  }
596  else
597  {
598  //check locally and then collectively come to a global conclusion
599  bool interactionLocal = checkParticleForInteractionLocal(p);
600
601  MPIContainer::Instance().allReduce(interactionLocal, interaction, MPI::LAND);
602  }
603 #else
604  bool interaction = checkParticleForInteractionLocalPeriodic(p);
605 #endif
606  return interaction;
607 }
static MPIContainer & Instance()
fetch the instance to be used for communication
Definition: MpiContainer.h:130
bool checkParticleForInteractionLocal(const BaseParticle &P) final
Checks if the given BaseParticle has an interaction with a BaseWall or other BaseParticles in a local...
Definition: MercuryBase.cc:616
#define NUMBER_OF_PROCESSORS
For the MPI communication routines this quantity is often required. defining this macro makes the cod...
Definition: GeneralDefine.h:62
bool checkParticleForInteractionLocalPeriodic(const BaseParticle &P)
Definition: DPMBase.cc:4637
 bool MercuryBase::checkParticleForInteractionLocal ( const BaseParticle & p )
finalvirtual

Checks if the given BaseParticle has an interaction with a BaseWall or other BaseParticles in a local domain.

Parameters
 [in] p The BaseParticle for which we want to check if there is an interaction.
Returns
A boolean which is false if there was an interaction and true if there was no interaction.

Check for the given BaseParticle if there is an interaction with any other object. First check all walls, then all particles in the local domain.

Todo:
IFCD: I think it might be better if it returns true if there is an interaction.

Reimplemented from DPMBase.

Definition at line 616 of file MercuryBase.cc.

References hGridHasParticleContacts(), logger, VERBOSE, and DPMBase::wallHandler.

617 {
618  Mdouble distance;
619  Vec3D normal;
620
621  //Check if it has no collision with walls
622  for (BaseWall* w :wallHandler)
623  {
624  if (w->getDistanceAndNormal(p, distance, normal))
625  {
626  logger(VERBOSE, "Collision with wall %.", *w);
627  return false;
628  }
629  else
630  {
631  logger(VERBOSE, "No collision with wall %.", *w);
632  }
633  }
634
635  //Check if it has no collision with other particles
636  if (hGridHasParticleContacts(&p))
637  {
638  logger(VERBOSE, "Collision with particle.");
639  return false;
640  }
641  else
642  {
643  logger(VERBOSE, "No collision with particles.");
644  }
645  return true;
646 }
Logger< MERCURY_LOGLEVEL > logger("MercuryKernel")
double Mdouble
Definition: GeneralDefine.h:34
Basic class for walls.
Definition: BaseWall.h:47
WallHandler wallHandler
An object of the class WallHandler. Contains pointers to all the walls created.
Definition: DPMBase.h:1339
virtual bool hGridHasParticleContacts(const BaseParticle *obj)=0
Purely virtual function that checks if the given particle has a possible contact with any other BaseP...
Definition: Vector.h:49
 void MercuryBase::constructor ( )

This is the actual constructor, it is called do both constructors above.

Function that is called by the default constructor, it sets all parameters for the MercuryBase to sensible defaults.

Definition at line 77 of file MercuryBase.cc.

Referenced by MercuryBase().

78 {
79  grid = nullptr;
80  gridNeedsUpdate_ = true;
81  hGridMaxLevels_ = 3;
83  updateEachTimeStep_ = true;
88 }
Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.
Definition: MercuryBase.h:368
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
HGridDistribution hGridDistribution_
Indicator for the distribution of the sizes of the cells of different levels of the HGrid...
Definition: MercuryBase.h:354
unsigned int hGridMaxLevels_
Unsigned integer that indicates the maximum number of levels of the HGrid.
Definition: MercuryBase.h:396
Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain.
Definition: MercuryBase.h:404
const Mdouble inf
Definition: GeneralDefine.h:44
HGridMethod hGridMethod_
Indicator of which way the interactions between different levels are tested.
Definition: MercuryBase.h:348
bool updateEachTimeStep_
Boolean which indicates whether or not the cell in which a particle is must be updated every time ste...
Definition: MercuryBase.h:382
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362
 HGrid* MercuryBase::getHGrid ( )
inlineprotected

Gets the HGrid used by this problem.

Returns
A pointer to the HGrid associated with this MercuryBase.

Definition at line 311 of file MercuryBase.h.

References grid.

312  { return grid; }
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
 const HGrid* MercuryBase::getHGrid ( ) const
inlineprotected

Gets the HGrid used by this problem, const version.

Returns
A pointer to the HGrid associated with this MercuryBase.

Definition at line 318 of file MercuryBase.h.

References grid.

319  { return grid; }
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
 Mdouble MercuryBase::getHGridCellOverSizeRatio ( ) const

Gets the ratio of the smallest cell over the smallest particle.

Returns
The maximum ratio between the cells and the size of the BaseParticle it contains.

Definition at line 447 of file MercuryBase.cc.

References hGridCellOverSizeRatio_.

Referenced by hGridActionsAfterIntegration(), hGridActionsBeforeTimeStep(), and hGridRebuild().

448 {
450 }
Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain.
Definition: MercuryBase.h:404
 Mdouble MercuryBase::getHGridCurrentMaxRelativeDisplacement ( ) const

Returns hGridCurrentMaxRelativeDisplacement_.

Returns
currentMaxRelativeDisplacement_, which is the highest relative speed of a BaseParticle compared to the cell size of the grid in which the BaseParticle is.

Definition at line 157 of file MercuryBase.cc.

References currentMaxRelativeDisplacement_.

158 {
160 }
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362
 HGridDistribution MercuryBase::getHGridDistribution ( ) const

Gets how the sizes of the cells of different levels are distributed.

Returns
The HGridDistribution (distribution of cell sizes) used by this MercuryBase.

Definition at line 425 of file MercuryBase.cc.

References hGridDistribution_.

Referenced by hGridRebuild().

426 {
427  return hGridDistribution_;
428 }
HGridDistribution hGridDistribution_
Indicator for the distribution of the sizes of the cells of different levels of the HGrid...
Definition: MercuryBase.h:354
 unsigned int MercuryBase::getHGridMaxLevels ( ) const

Gets the maximum number of levels of the HGrid in this MercuryBase.

Returns
The maximum number of levels in the HGrid.

Definition at line 482 of file MercuryBase.cc.

References hGridMaxLevels_.

Referenced by hGridRebuild().

483 {
484  return hGridMaxLevels_;
485 }
unsigned int hGridMaxLevels_
Unsigned integer that indicates the maximum number of levels of the HGrid.
Definition: MercuryBase.h:396
 HGridMethod MercuryBase::getHGridMethod ( ) const
inline

Gets whether the HGrid in this MercuryBase is BOTTOMUP or TOPDOWN.

Returns
The HGridMethod used by this MercuryBase.

Definition at line 204 of file MercuryBase.h.

References hGridMethod_.

Referenced by Mercury2D::computeInternalForces(), and Mercury3D::computeInternalForces().

205  { return hGridMethod_; }
HGridMethod hGridMethod_
Indicator of which way the interactions between different levels are tested.
Definition: MercuryBase.h:348
virtual

Gets the desired size of the largest cells of the HGrid.

Returns
The interaction radius of the largest particle multiplied by the maximum ratio between the cell size and particle size.

Definition at line 568 of file MercuryBase.cc.

Referenced by hGridRebuild().

569 {
570  if (particleHandler.getSize() == 0)
571  {
572  return 0.0;
573  }
574  else
575  {
577  }
578 }
unsigned int getSize() const
Gets the size of the particleHandler (including mpi and periodic particles)
Definition: BaseHandler.h:655
Returns the largest interaction radius of the current domain.
ParticleHandler particleHandler
An object of the class ParticleHandler, contains the pointers to all the particles created...
Definition: DPMBase.h:1329
virtual

Gets the desired size of the smallest cells of the HGrid.

Returns
The interaction radius of the smallest particle multiplied by the maximum ratio between the cell size and particle size.

Definition at line 552 of file MercuryBase.cc.

Referenced by hGridRebuild().

553 {
554  if (particleHandler.getSize() == 0)
555  {
556  return 0.0;
557  }
558  else
559  {
561  }
562 }
unsigned int getSize() const
Gets the size of the particleHandler (including mpi and periodic particles)
Definition: BaseHandler.h:655
Returns the smallest interaction radius of the current domain.
ParticleHandler particleHandler
An object of the class ParticleHandler, contains the pointers to all the particles created...
Definition: DPMBase.h:1329
 unsigned int MercuryBase::getHGridTargetNumberOfBuckets ( ) const
virtual

Gets the desired number of buckets, which is the maximum of the number of particles and 10.

Returns
The number of possible values the hash function can have.
Todo:
TW SpeedCheckThomas revealed that adding a factor 10 here improved performance by 20% for monodisperse particles, 45% for highly polydisperse (this seems true for particle numbers 1e3 - 1e6); a larger factor seems to little extra effect; the memory cost is small compared to the number of particles, so I added the factor permanently. please check this is ok to do.

Definition at line 534 of file MercuryBase.cc.

References BaseHandler< T >::getSize(), and DPMBase::particleHandler.

Referenced by hGridNeedsRebuilding(), and hGridRebuild().

535 {
536  unsigned int nParticles = particleHandler.getSize();
537  if (nParticles > 10)
538  {
540  return 10 * nParticles;
541  }
542  else
543  {
544  return 10;
545  }
546 }
unsigned int getSize() const
Gets the size of the particleHandler (including mpi and periodic particles)
Definition: BaseHandler.h:655
ParticleHandler particleHandler
An object of the class ParticleHandler, contains the pointers to all the particles created...
Definition: DPMBase.h:1329
 Mdouble MercuryBase::getHGridTotalCurrentMaxRelativeDisplacement ( ) const

Returns hGridTotalCurrentMaxRelativeDisplacement_.

Returns
totalCurrentMaxRelativeDisplacement_, which is the cumulative value of 2*currentMaxRelativeDisplacement_

Definition at line 166 of file MercuryBase.cc.

References totalCurrentMaxRelativeDisplacement_.

Referenced by hGridActionsBeforeTimeStep().

167 {
169 }
Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.
Definition: MercuryBase.h:368
 bool MercuryBase::getHGridUpdateEachTimeStep ( ) const
finalvirtual

Gets whether or not the HGrid is updated every time step.

Returns
A boolean which indicates if the HGrid must be updated every time step.

Reimplemented from DPMBase.

Definition at line 183 of file MercuryBase.cc.

References updateEachTimeStep_.

Referenced by hGridActionsBeforeTimeStep().

184 {
185  return updateEachTimeStep_;
186 }
bool updateEachTimeStep_
Boolean which indicates whether or not the cell in which a particle is must be updated every time ste...
Definition: MercuryBase.h:382
 void MercuryBase::hGridActionsAfterIntegration ( )
overrideprotectedvirtual

This function has to be called before integrateBeforeForceComputation.

Sets the totalCurrentMaxRelativeDisplacement

Reimplemented from DPMBase.

Definition at line 373 of file MercuryBase.cc.

374 {
377 }
Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.
Definition: MercuryBase.h:368
Mdouble getHGridCellOverSizeRatio() const
Gets the ratio of the smallest cell over the smallest particle.
Definition: MercuryBase.cc:447
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362
 void MercuryBase::hGridActionsBeforeIntegration ( )
overrideprotectedvirtual

Resets the currentMaxRelativeDisplacement_ to 0.

Sets the currentMaxRelativeDisplacement to zero

Reimplemented from DPMBase.

Definition at line 365 of file MercuryBase.cc.

References currentMaxRelativeDisplacement_.

366 {
368 }
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362
 void MercuryBase::hGridActionsBeforeTimeLoop ( )
overridevirtual

This sets up the broad phase information, has to be done at this stage because it requires the particle size.

Performs all actions that need to be done before the time loop. At the moment, this means nothing.

Reimplemented from DPMBase.

Definition at line 94 of file MercuryBase.cc.

Referenced by Chute::createBottom(), and ChuteBottom::setupInitialConditions().

95 {
96 }
 void MercuryBase::hGridActionsBeforeTimeStep ( )
overridevirtual

Performs all necessary actions before a time-step, like updating the particles and resetting all the bucket information, etc.

The actions that are done before each time step, it rebuilds the HGrid if necessary, otherwise it computes which cell each particle is in.

Reimplemented from DPMBase.

Definition at line 317 of file MercuryBase.cc.

Referenced by Chute::createBottom().

318 {
319  if (hGridNeedsRebuilding())
320  {
321  //logger(INFO, "HGrid needs rebuilding at nt=%",getNumberOfTimeSteps());
322  hGridRebuild();
323  }
324  else
325  {
326 #ifndef CONTACT_LIST_HGRID
328 #endif
331  {
332 #ifndef CONTACT_LIST_HGRID
334 #endif
335  //logger(INFO, "HGrid needs updating at nt=%",getNumberOfTimeSteps());
336  for (BaseParticle* const p : particleHandler)
337  {
339  }
341  }
342  }
343 }
virtual void hGridUpdateParticle(BaseParticle *obj UNUSED)
Definition: DPMBase.cc:1664
bool hGridNeedsRebuilding()
Gets if the HGrid needs rebuilding before anything else happens.
Definition: MercuryBase.cc:490
Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.
Definition: MercuryBase.h:368
Mdouble getHGridCellOverSizeRatio() const
Gets the ratio of the smallest cell over the smallest particle.
Definition: MercuryBase.cc:447
void clearFirstBaseParticleInBucket()
For all buckets, it removes the pointer to the first BaseParticle in it, practically emptying the buc...
Definition: HGrid.cc:145
Mdouble getHGridTotalCurrentMaxRelativeDisplacement() const
Returns hGridTotalCurrentMaxRelativeDisplacement_.
Definition: MercuryBase.cc:166
ParticleHandler particleHandler
An object of the class ParticleHandler, contains the pointers to all the particles created...
Definition: DPMBase.h:1329
void clearBucketIsChecked()
Sets all buckets to not-checked.
Definition: HGrid.cc:140
void hGridRebuild()
This sets up the parameters required for the contact model.
Definition: MercuryBase.cc:203
HGrid * getHGrid()
Gets the HGrid used by this problem.
Definition: MercuryBase.h:311
bool getHGridUpdateEachTimeStep() const final
Gets whether or not the HGrid is updated every time step.
Definition: MercuryBase.cc:183
 virtual std::vector MercuryBase::hGridFindParticleContacts ( const BaseParticle * obj )
pure virtual

Purely virtual function that returns all particles that have a contact with a given particle.

Implemented in Mercury3D, and Mercury2D.

Referenced by DropletBoundary::checkBoundaryAfterParticlesMove().

 virtual bool MercuryBase::hGridHasParticleContacts ( const BaseParticle * obj )
protectedpure virtual

Purely virtual function that checks if the given particle has a possible contact with any other BaseParticle in the HGrid.

Implemented in Mercury3D, and Mercury2D.

Referenced by checkParticleForInteractionLocal().

 void MercuryBase::hGridInfo ( std::ostream & os = std::cout ) const

Writes the info of the HGrid to the screen in a nice format.

Definition at line 649 of file MercuryBase.cc.

Referenced by write().

650 {
651 #ifdef MERCURY_USE_MPI
652  MPIContainer& communicator = MPIContainer::Instance();
653  int numberOfProcessors = communicator.getNumberOfProcessors();
654 #else
655  int numberOfProcessors = 1;
656 #endif
657  os << "hGrid"
658  << " method " << hGridMethod_
659  << " distribution " << hGridDistribution_
660  << " cellOverSizeRatio " << hGridCellOverSizeRatio_;
661  //os << " maxLevels " << hGridMaxLevels_;
662  if (numberOfProcessors == 1 && grid != nullptr)
663  {
664  os << " numberOfBuckets " << grid->getNumberOfBuckets()
665  << " cellSizes";
666  for (const auto p: grid->getCellSizes()) os << " " << p;
667  }
668  os << " gridNeedsUpdate " << gridNeedsUpdate_
669  << " updateEachTimeStep " << updateEachTimeStep_
670  << " currentMaxRelativeDisplacement " << currentMaxRelativeDisplacement_
671  << " totalCurrentMaxRelativeDisplacement " << totalCurrentMaxRelativeDisplacement_
672  << std::endl;
673 }
This class contains all information and functions required for communication between processors...
Definition: MpiContainer.h:125
static MPIContainer & Instance()
fetch the instance to be used for communication
Definition: MpiContainer.h:130
Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.
Definition: MercuryBase.h:368
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
HGridDistribution hGridDistribution_
Indicator for the distribution of the sizes of the cells of different levels of the HGrid...
Definition: MercuryBase.h:354
std::size_t getNumberOfProcessors() const
Get the total number of processors participating in this simulation.
Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain.
Definition: MercuryBase.h:404
HGridMethod hGridMethod_
Indicator of which way the interactions between different levels are tested.
Definition: MercuryBase.h:348
const std::vector< double > & getCellSizes() const
Gets the sizes of the cells at all levels as a vector.
Definition: HGrid.h:154
bool updateEachTimeStep_
Boolean which indicates whether or not the cell in which a particle is must be updated every time ste...
Definition: MercuryBase.h:382
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362
unsigned int getNumberOfBuckets() const
Gets the number of buckets of this HGrid.
Definition: HGrid.h:199
 void MercuryBase::hGridInsertParticle ( BaseParticle * obj )
finalprotected

Inserts a single Particle to current grid.

Parameters
 [in] obj A pointer to the BaseParticle that needs to be inserted in the HGrid.

Definition at line 305 of file MercuryBase.cc.

References grid, and HGrid::insertParticleToHgrid().

Referenced by hGridRebuild().

306 {
307  if (grid != nullptr)
308  {
310  }
311 }
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
void insertParticleToHgrid(BaseParticle *obj)
Inserts the given BaseParticle in to the HGrid.
Definition: HGrid.cc:89
 bool MercuryBase::hGridNeedsRebuilding ( )

Gets if the HGrid needs rebuilding before anything else happens.

Returns
A boolean which indicates if the HGrid needs to be rebuilt.

Definition at line 490 of file MercuryBase.cc.

Referenced by hGridActionsBeforeTimeStep(), and Mercury3D::hGridGetInteractingParticleList().

491 {
492  if (grid == nullptr)
493  {
494  logger(VERBOSE, "HGrid needs updating, because there is no grid.");
495  return true;
496  }
497  else if (gridNeedsUpdate_)
498  {
499  logger(VERBOSE, "HGrid needs updating, because some of its initialisation parameters have changed.");
500  return true;
501  }
502  else if (grid->getNeedsRebuilding())
503  {
504  logger(VERBOSE, "HGrid needs updating, because said so by the grid itself");
505  return true;
506  }
507  else if (getHGrid()->getNumberOfBuckets() > 10 * getHGridTargetNumberOfBuckets() ||
508  10 * getHGrid()->getNumberOfBuckets() < getHGridTargetNumberOfBuckets())
509  {
510  logger(VERBOSE, "HGrid needs updating, because of number of buckets, current = %, target = %.",
512  return true;
513  }
514  else if (particleHandler.getLargestParticle() != nullptr &&
517  {
518  logger(VERBOSE, "HGrid needs updating, because of maximum cell size, current = %, required = %.",
521  return true;
522  }
523  else
524  {
525  //std::cout<<"HGrid does not need updating, because of number of buckets, current="<<grid->NUM_BUCKETS<<" target="<<particleHandler.getSize()<<std::endl;
526  //std::cout<<"HGrid does not need updating, because of maximum cell size, current="<<grid->cellSizes_.back()*grid->cellOverSizeRatio_<<" required="<<2.0*particleHandler.getLargestParticle()->getInteractionRadius()<<std::endl;
527  return false;
528  }
529 }
BaseParticle * getLargestParticle() const
Returns the pointer of the largest particle in the particle handler. When mercury is running in paral...
unsigned int getSize() const
Gets the size of the particleHandler (including mpi and periodic particles)
Definition: BaseHandler.h:655
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
Logger< MERCURY_LOGLEVEL > logger("MercuryKernel")
Returns the particle's interaction radius, which might be different from radius_ (e.g., when dealing with wet particles)
Definition: BaseParticle.h:359
virtual unsigned int getHGridTargetNumberOfBuckets() const
Gets the desired number of buckets, which is the maximum of the number of particles and 10...
Definition: MercuryBase.cc:534
Mdouble getCellOverSizeRatio() const
Gets the maximum ratio of the cell to a particle it contains.
Definition: HGrid.h:139
Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain.
Definition: MercuryBase.h:404
const std::vector< double > & getCellSizes() const
Gets the sizes of the cells at all levels as a vector.
Definition: HGrid.h:154
ParticleHandler particleHandler
An object of the class ParticleHandler, contains the pointers to all the particles created...
Definition: DPMBase.h:1329
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
HGrid * getHGrid()
Gets the HGrid used by this problem.
Definition: MercuryBase.h:311
bool getNeedsRebuilding() const
Gets whether or not the grid needs to be rebuilt before something else is done with it...
Definition: HGrid.h:192
unsigned int getNumberOfBuckets() const
Gets the number of buckets of this HGrid.
Definition: HGrid.h:199
 void MercuryBase::hGridRebuild ( )
protected

This sets up the parameters required for the contact model.

Rebuild the HGrid with the current data. First compute the cell sizes of the new HGrid, then delete the old HGrid and build the new HGrid. Finally add all particles to the new HGrid. First check if either the ParticleHandler is empty or the particle distribution is monodispersed. If this is the case, make a grid that contains only one level which has a cell size defined by the diameter of the particle * hGridCellOverSizeRatio_. Otherwise, make cell sizes depending on the distribution given in hGridDistribution_. LINEAR and EXPONENTIAL first compute the smallest and biggest cell size, and then compute the ones in between according to the distribution. USER just takes the cell sizes given by the user. OLDHGRID computes the smallest cell size and then makes the cells of each subsequent level twice as big.

Todo:
{This is really ugly fix to force the particle to update}

Definition at line 203 of file MercuryBase.cc.

204 {
205  std::vector<Mdouble> cellSizes;
206
210  {
211  //this case is executed if the particleHandler is empty (minParticleInteractionRadius == 0)
212  //or if the particle distribution is monodispersed.
213  //nextafter(d,std::numeric_limits<Mdouble>::max()) chooses the smallest
214  // Mdouble that is bigger than d.
215  const Mdouble maxCellSize = nextafter(2.0 * maxParticleInteractionRadius * getHGridCellOverSizeRatio(),
216  std::numeric_limits<Mdouble>::max());
217  cellSizes.push_back(maxCellSize);
218  if (getHGridMaxLevels() != 1)
219  {
220
221  logger(VERBOSE,
222  "While rebuilding the hgrid: the number of levels was set to one, as the particle distribution is monodispersed");
223  }
224  }
225  else
226  {
227  switch (getHGridDistribution())
228  {
229  case LINEAR:
230  {
231  const Mdouble minCellSize = nextafter(2.0 * minParticleInteractionRadius * getHGridCellOverSizeRatio(),
232  0.0);
233  const Mdouble maxCellSize = nextafter(2.0 * maxParticleInteractionRadius * getHGridCellOverSizeRatio(),
234  std::numeric_limits<Mdouble>::max());
235  //std::cout << "HGrid: using a linear cell size distribution from " << minCellSize << " to " << maxCellSize << " over " << getHGridMaxLevels() << " levels" << std::endl;
236  for (unsigned int i = 0; i + 1 < getHGridMaxLevels(); i++)
237  {
238  cellSizes.push_back(minCellSize + (maxCellSize - minCellSize)
239  * (static_cast<Mdouble>(i + 1)) / getHGridMaxLevels());
240  }
241  //The last cell is added separately because in some cases accuracy was lost when calculating it.
242  cellSizes.push_back(maxCellSize);
243  break;
244  }
245  case EXPONENTIAL:
246  {
247  const Mdouble minCellSize = nextafter(2.0 * minParticleInteractionRadius * getHGridCellOverSizeRatio(),
248  0.0);
249  const Mdouble maxCellSize = nextafter(2.0 * maxParticleInteractionRadius * getHGridCellOverSizeRatio(),
250  std::numeric_limits<Mdouble>::max());
251  logger(INFO,"HGrid: using exponential cell size distribution from % to % over % levels",
252  minCellSize,maxCellSize,getHGridMaxLevels());
253  for (unsigned int i = 0; i + 1 < getHGridMaxLevels(); i++)
254  {
255  cellSizes.push_back(minCellSize
256  * std::pow(maxCellSize / minCellSize, static_cast<Mdouble>(i + 1)
257  / getHGridMaxLevels()));
258  }
259  //The last cell is added separately because in some cases accuracy was lost when calculating it.
260  cellSizes.push_back(maxCellSize);
261  break;
262  }
263  case USER:
264  {
265  for (unsigned int i = 0; i < getHGridMaxLevels(); i++)
266  {
267  cellSizes.push_back(userHGridCellSize(i));
268  }
269  break;
270  }
271  case OLDHGRID:
272  {
273  const Mdouble minCellSize = nextafter(2.0 * minParticleInteractionRadius * getHGridCellOverSizeRatio(),
274  0.0);
275
276  //std::cout<<"HGrid: using the old HGrid cell size distribution starting from " <<minCellSize<<std::endl;
277  for (unsigned int i = 0; i < getHGridMaxLevels(); i++)
278  {
279  cellSizes.push_back(minCellSize * std::pow(2, i));
280  }
281  break;
282  }
283  }
284  }
285
286
287  delete grid;
288
289
291
292  for (BaseParticle* const p : particleHandler)
293  {
296  p->setHGridX(9999);
298  }
299  gridNeedsUpdate_ = false;
300 }
virtual void hGridUpdateParticle(BaseParticle *obj UNUSED)
Definition: DPMBase.cc:1664
Mdouble getHGridCellOverSizeRatio() const
Gets the ratio of the smallest cell over the smallest particle.
Definition: MercuryBase.cc:447
HGrid * grid
A pointer to the HGrid associated with this MercuryBase.
Definition: MercuryBase.h:336
Logger< MERCURY_LOGLEVEL > logger("MercuryKernel")
double Mdouble
Definition: GeneralDefine.h:34
virtual unsigned int getHGridTargetNumberOfBuckets() const
Gets the desired number of buckets, which is the maximum of the number of particles and 10...
Definition: MercuryBase.cc:534
Gets the desired size of the smallest cells of the HGrid.
Definition: MercuryBase.cc:552
const std::complex< Mdouble > i
Definition: ExtendedMath.h:50
unsigned int getHGridMaxLevels() const
Gets the maximum number of levels of the HGrid in this MercuryBase.
Definition: MercuryBase.cc:482
Gets the desired size of the largest cells of the HGrid.
Definition: MercuryBase.cc:568
void hGridInsertParticle(BaseParticle *obj) final
Inserts a single Particle to current grid.
Definition: MercuryBase.cc:305
In the HGrid class, here all information about the HGrid is stored.
Definition: HGrid.h:42
ParticleHandler particleHandler
An object of the class ParticleHandler, contains the pointers to all the particles created...
Definition: DPMBase.h:1329
HGridDistribution getHGridDistribution() const
Gets how the sizes of the cells of different levels are distributed.
Definition: MercuryBase.cc:425
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
virtual Mdouble userHGridCellSize(unsigned int level)
Virtual function that enables inheriting classes to implement a function to let the user set the cell...
Definition: MercuryBase.cc:383
 void MercuryBase::hGridUpdateMove ( BaseParticle * iP, Mdouble move )
finalprotectedvirtual

Computes the relative displacement of the given BaseParticle and updates the currentMaxRelativeDisplacement_ accordingly.

(the factor 2.0 is because the displacement is applied after and before the force computation in velocity verlet)

Parameters
 [in] iP A pointer to the BaseParticle for which we want to compare the relative speed to the currentMaxRelativeDisplacement_ to. [in] move An Mdouble that represents the square of the distance the BaseParticle has moved.

Reimplemented from DPMBase.

Definition at line 353 of file MercuryBase.cc.

354 {
355  const Mdouble currentRelativeDisplacement = move / mathsFunc::square(getHGrid()->getCellSize(iP->getHGridLevel()));
356  if (currentRelativeDisplacement > currentMaxRelativeDisplacement_)
357  {
358  currentMaxRelativeDisplacement_ = currentRelativeDisplacement;
359  }
360 }
double Mdouble
Definition: GeneralDefine.h:34
HGrid * getHGrid()
Gets the HGrid used by this problem.
Definition: MercuryBase.h:311
T square(const T val)
squares a number
Definition: ExtendedMath.h:104
unsigned int getHGridLevel() const
Returns particle's HGrid level.
Definition: BaseParticle.h:234
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362
 void MercuryBase::read ( std::istream & is, ReadOptions opt = ReadOptions::ReadAll )
overridevirtual

Reads the MercuryBase from an input stream, for example a restart file.

Parameters
 [in,out] is The input stream from which the MercuryBase must be read.

This function reads first the properties that are DPMBase related from the given input stream, after that it reads the hGridMaxLevels_ and the hGridCellOverSizeRatio_ from the input stream.

Reimplemented from DPMBase.

Definition at line 104 of file MercuryBase.cc.

105 {
107
108  std::stringstream line;
110
111  std::string dummy;
112
113  line >> dummy;
114  // if-statement is needed in case a DPMBase (which does not contain the hGrid data)
115  // is read into MercuryBase class
116  if (dummy == "hGrid")
117  {
118  line >> dummy >> hGridMethod_;
119  line >> dummy >> hGridDistribution_;
120  line >> dummy >> hGridCellOverSizeRatio_;
121  //the extra information here is not needed
122  do
123  {
124  line >> dummy;
125  } while (dummy != "gridNeedsUpdate");
126  line >> gridNeedsUpdate_;
127  line >> dummy >> updateEachTimeStep_;
128  line >> dummy >> currentMaxRelativeDisplacement_;
129  line >> dummy >> totalCurrentMaxRelativeDisplacement_;
130  }
131 }
Mdouble totalCurrentMaxRelativeDisplacement_
After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.
Definition: MercuryBase.h:368
HGridDistribution hGridDistribution_
Indicator for the distribution of the sizes of the cells of different levels of the HGrid...
Definition: MercuryBase.h:354
Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain.
Definition: MercuryBase.h:404
HGridMethod hGridMethod_
Indicator of which way the interactions between different levels are tested.
Definition: MercuryBase.h:348
Reads all data from a restart file, e.g. domain data and particle data.
Definition: DPMBase.cc:3496
void getLineFromStringStream(std::istream &in, std::stringstream &out)
Reads a line from one stringstream into another, and prepares the latter for reading in...
Definition: Helpers.cc:424
bool updateEachTimeStep_
Boolean which indicates whether or not the cell in which a particle is must be updated every time ste...
Definition: MercuryBase.h:382
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
Mdouble currentMaxRelativeDisplacement_
Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the le...
Definition: MercuryBase.h:362
 bool MercuryBase::readNextArgument ( int & i, int argc, char * argv[] )
overrideprotectedvirtual

Reads the next command line argument.

Parameters
 [in] i The ordinal number in the input arguments we want to read. [in] argc The number of arguments in the command line, not used. [in] argv The command line input arguments.
Returns
A boolean which is true if the argument is found and false otherwise.

Reimplemented from DPMBase.

Definition at line 396 of file MercuryBase.cc.

397 {
398  if (!strcmp(argv[i], "-hGridMaxLevels"))
399  {
400  setHGridMaxLevels(static_cast<unsigned int>(atoi(argv[i + 1])));
401  }
402  else if (!strcmp(argv[i], "-cellOverSizeRatio"))
403  {
404  setHGridCellOverSizeRatio(atof(argv[i + 1]));
405  }
406  else
407  {
409  }
410  return true; //returns true if argv[i] is found
411 }
const std::complex< Mdouble > i
Definition: ExtendedMath.h:50
virtual bool readNextArgument(int &i, int argc, char *argv[])
Interprets the i^th command-line argument.
Definition: DPMBase.cc:4299
void setHGridCellOverSizeRatio(Mdouble cellOverSizeRatio)
Sets the ratio of the smallest cell over the smallest particle.
Definition: MercuryBase.cc:457
void setHGridMaxLevels(unsigned int HGridMaxLevels)
Sets the maximum number of levels of the HGrid in this MercuryBase.
Definition: MercuryBase.cc:470
 void MercuryBase::setHGridCellOverSizeRatio ( Mdouble hGridCellOverSizeRatio )

Sets the ratio of the smallest cell over the smallest particle.

Parameters
 [in] hGridCellOverSizeRatio The desired maximum ratio between the cells and the size of the BaseParticle it contains.
Todo:
IFCD: I changed the if unequal to if equal, can someone check this is correct?

Definition at line 457 of file MercuryBase.cc.

References gridNeedsUpdate_, hGridCellOverSizeRatio_, and mathsFunc::isEqual().

458 {
459  //If the hGridCellOverSizeRatio changes significantly, assign the given parameter.
460  if (!mathsFunc::isEqual(hGridCellOverSizeRatio_, hGridCellOverSizeRatio, 1e-10))
461  {
462  gridNeedsUpdate_ = true;
463  hGridCellOverSizeRatio_ = hGridCellOverSizeRatio;
464  }
465 }
Mdouble hGridCellOverSizeRatio_
The maximum ratio between the size of the cells and the BaseParticle they contain.
Definition: MercuryBase.h:404
bool isEqual(Mdouble v1, Mdouble v2, Mdouble absError)
Compares the difference of two Mdouble with an absolute error, useful in UnitTests.
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
 void MercuryBase::setHGridDistribution ( HGridDistribution hGridDistribution )

Sets how the sizes of the cells of different levels are distributed.

Parameters
 [in] hGridDistribution The distribution of the cell sizes that will be used by this MercuryBase.

Definition at line 434 of file MercuryBase.cc.

References gridNeedsUpdate_, and hGridDistribution_.

435 {
436  if (hGridDistribution_ != hGridDistribution)
437  {
438  gridNeedsUpdate_ = true;
439  hGridDistribution_ = hGridDistribution;
440  }
441 }
HGridDistribution hGridDistribution_
Indicator for the distribution of the sizes of the cells of different levels of the HGrid...
Definition: MercuryBase.h:354
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
 void MercuryBase::setHGridMaxLevels ( unsigned int hGridMaxLevels )

Sets the maximum number of levels of the HGrid in this MercuryBase.

Parameters
 [in] hGridMaxLevels The maximum number of levels that will be used in the HGrid.

Definition at line 470 of file MercuryBase.cc.

References gridNeedsUpdate_, and hGridMaxLevels_.

471 {
472  if (hGridMaxLevels_ != hGridMaxLevels)
473  {
474  gridNeedsUpdate_ = true;
475  hGridMaxLevels_ = hGridMaxLevels;
476  }
477 }
unsigned int hGridMaxLevels_
Unsigned integer that indicates the maximum number of levels of the HGrid.
Definition: MercuryBase.h:396
bool gridNeedsUpdate_
Boolean that indicates whether or not the grid needs to be updated.
Definition: MercuryBase.h:376
 void MercuryBase::setHGridMethod ( HGridMethod hGridMethod )

Sets the HGridMethod to either BOTTOMUP or TOPDOWN.

Parameters
 [in] hGridMethod The HGridMethod that will be used in this MercuryBase.

Definition at line 417 of file MercuryBase.cc.

References hGridMethod_.

418 {
419  hGridMethod_ = hGridMethod;
420 }
HGridMethod hGridMethod_
Indicator of which way the interactions between different levels are tested.
Definition: MercuryBase.h:348
 void MercuryBase::setHGridUpdateEachTimeStep ( bool updateEachTimeStep )

Sets whether or not the HGrid must be updated every time step.

Parameters
 [in] updateEachTimeStep A boolean which indicates if the HGrid must be updated every time step.

Definition at line 175 of file MercuryBase.cc.

References updateEachTimeStep_.

176 {
177  updateEachTimeStep_ = updateEachTimeStep;
178 }
bool updateEachTimeStep_
Boolean which indicates whether or not the cell in which a particle is must be updated every time ste...
Definition: MercuryBase.h:382
 Mdouble MercuryBase::userHGridCellSize ( unsigned int level )
virtual

Virtual function that enables inheriting classes to implement a function to let the user set the cell size of the HGrid.

Parameters
 [in] level The level of the cell we want to know the size set by the user for.
Returns
The size of the cells at the given level.

Definition at line 383 of file MercuryBase.cc.

References logger, and WARN.

Referenced by hGridRebuild().

384 {
385  logger(WARN, "In Mdouble MercuryBase::userHGridCellSize(unsigned int level) with level= %", level);
386  logger(WARN, "If you want to use user defined HGrid cell sizes, this function should be redefined");
387  return 0.0;
388 }
Logger< MERCURY_LOGLEVEL > logger("MercuryKernel")
 void MercuryBase::write ( std::ostream & os, bool writeAllParticles = true ) const
overridevirtual

Writes the MercuryBase to an output stream, for example a restart file.

Parameters
 [in,out] os The output stream to which this MercuryBase must be written. [in] writeAllParticles A boolean which indicates whether or not all BaseParticle from the ParticleHandler must be written to the ostream. If it is set to true or if there are at most 4 BaseParticle, all BaseParticle are written. If it is set to false, only the first two BaseParticle are written, followed by ...

Function that writes this MercuryBase to an output stream, for example a restart file. First writes the domain information, then the walls, followed by the boundaries and particles, and finally the HGrid information.

Reimplemented from DPMBase.

Definition at line 146 of file MercuryBase.cc.

References hGridInfo(), and DPMBase::write().

Referenced by Chute::write(), and BaseCluster::write().

147 {
148  DPMBase::write(os, writeAllParticles);
149  hGridInfo(os);
150 }
virtual void write(std::ostream &os, bool writeAllParticles=true) const
Loads all MD data and plots statistics for all time steps in the .data file.
Definition: DPMBase.cc:3375
void hGridInfo(std::ostream &os=std::cout) const
Writes the info of the HGrid to the screen in a nice format.
Definition: MercuryBase.cc:649

## Member Data Documentation

 Mdouble MercuryBase::currentMaxRelativeDisplacement_
private

Mdouble that denotes the maximum of the displacement of a particle divided by the cell size of the level of that particle at the current time step. This is useful to see whether a particle could have moved more than one cell.

Definition at line 362 of file MercuryBase.h.

 HGrid* MercuryBase::grid
private

A pointer to the HGrid associated with this MercuryBase.

Definition at line 336 of file MercuryBase.h.

 bool MercuryBase::gridNeedsUpdate_
private

Boolean that indicates whether or not the grid needs to be updated.

The grid needs to be updated before the HGrid is constructed and whenever something of the HGrid changes, such as the distribution, the number of levels, etc.

Definition at line 376 of file MercuryBase.h.

 Mdouble MercuryBase::hGridCellOverSizeRatio_
private

The maximum ratio between the size of the cells and the BaseParticle they contain.

The hGrifCellOverSizeRatio_ can be found by dividing the size of the smallest cell by the size of the smallest particle, so this can be set to give particles more space within a cell. Currently, the default is set to 1.

Definition at line 404 of file MercuryBase.h.

 HGridDistribution MercuryBase::hGridDistribution_
private

Indicator for the distribution of the sizes of the cells of different levels of the HGrid. The default is EXPONENTIAL.

Definition at line 354 of file MercuryBase.h.

Referenced by constructor(), getHGridDistribution(), hGridInfo(), MercuryBase(), read(), and setHGridDistribution().

 unsigned int MercuryBase::hGridMaxLevels_
private

Unsigned integer that indicates the maximum number of levels of the HGrid.

The number of levels in the HGrid is currently dependent on the maximum number of levels of the HGrid the user has given, either in the constructor or in setHGridMaxLevels, and whether the BaseParticle are monodispersed or not. If they are monodispersed, there is only one level in the HGrid, otherwise there are usually as many levels as the maximum set by the user. Note, by default the code sorts out these parameters itself but they can be overridden by the user.

Definition at line 396 of file MercuryBase.h.

Referenced by constructor(), getHGridMaxLevels(), MercuryBase(), and setHGridMaxLevels().

 HGridMethod MercuryBase::hGridMethod_
private

Indicator of which way the interactions between different levels are tested.

If hGridMethod_ is TOPDOWN, then larger particles are inserted into the grid of smaller particles when looking for cross level interactions. If hGridMethod_ is BOTTOMUP, then smaller particles are inserted into the grid of larger particles when looking for cross-level interactions. The default for the hGridMethod_ is TOPDOWN.

Definition at line 348 of file MercuryBase.h.

Referenced by constructor(), getHGridMethod(), hGridInfo(), MercuryBase(), read(), and setHGridMethod().

 Mdouble MercuryBase::totalCurrentMaxRelativeDisplacement_
private

After each time step, this Mdouble is increased by 2*currentMaxRelativeDisplacement_.

Definition at line 368 of file MercuryBase.h.

 bool MercuryBase::updateEachTimeStep_
private

Boolean which indicates whether or not the cell in which a particle is must be updated every time step.

Definition at line 382 of file MercuryBase.h.

The documentation for this class was generated from the following files: