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LiquidBridgeWilletInteraction.cc
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25 
26 
29 #include "Particles/BaseParticle.h"
30 #include "InteractionHandler.h"
31 #include <iomanip>
32 #include <fstream>
33 
40  : BaseInteraction(P, I, timeStamp)
41 {
42  wasInContact_=false;
43 #ifdef DEBUG_CONSTRUCTOR
44  std::cout<<"LiquidBridgeWilletInteraction::LiquidBridgeWilletInteraction() finished"<<std::endl;
45 #endif
46 }
51  : BaseInteraction(p)
52 {
54 #ifdef DEBUG_CONSTRUCTOR
55  std::cout<<"LiquidBridgeWilletInteraction::LiquidBridgeWilletInteraction(const LiquidBridgeWilletInteraction &p finished"<<std::endl;
56 #endif
57 }
62 {
63 #ifdef DEBUG_DESTRUCTOR
64  std::cout<<"LiquidBridgeWilletInteraction::~LiquidBridgeWilletInteraction() finished"<<std::endl;
65 #endif
66 }
70 void LiquidBridgeWilletInteraction::write(std::ostream& os) const
71 {
72  os << " wasInContact " << wasInContact_;
73 }
78 {
79  // we read in wasInContact_ like this because an early version did not initialize it.
80  std::string dummy;
81  int dummy2;
82  is >> dummy >> dummy2;
83  if (dummy2==1)
84  wasInContact_ = true;
85  else
86  wasInContact_ = false;
87 }
92 {
93  const LiquidBridgeWilletSpecies* species = getSpecies();
94  if (getOverlap()>=0)
95  {
96  wasInContact_=true;
97  Mdouble effectiveRadius = 2.0*getEffectiveRadius();
98  Mdouble fdotn = -2.0*constants::pi*effectiveRadius*species->getSurfaceTension()*std::cos(species->getContactAngle());
99  addForce(getNormal() * fdotn);
100  }
101  else if (wasInContact_)
102  {
103  Mdouble effectiveRadius = 2.0*getEffectiveRadius();
104  Mdouble s_c = -getOverlap()*std::sqrt(effectiveRadius/species->getLiquidBridgeVolume());
105  Mdouble fdotn = -2.0*constants::pi*effectiveRadius*species->getSurfaceTension()
106  *std::cos(species->getContactAngle())/(1+(1.05+2.5*s_c)*s_c);
107  addForce(getNormal() * fdotn);
108  }
109 }
114 {
116  return 0.0;
117 }
122 {
123  return dynamic_cast<const LiquidBridgeWilletSpecies *>(getBaseSpecies());
124 }
129 {
130  return "LiquidBridgeWillet";
131 }
Mdouble getEffectiveRadius() const
Returns a Mdouble to the effective radius of the interaction. (Not corrected for the overlap) ...
Mdouble getContactAngle() const
used to access the contact angle between particle and liquid bridge surface.
Mdouble getLiquidBridgeVolume() const
used to access the Volume of the liquid bridge.
void computeAdhesionForce()
Computes the adhesive forces for liquid bridge Willet type of interaction.
void write(std::ostream &os) const
Interaction print function, which accepts an std::ostream as input.
double Mdouble
Mdouble getSurfaceTension() const
used to access the surface tension of the liquid.
Stores information about interactions between two interactable objects; often particles but could be ...
Mdouble cos(Mdouble x)
Definition: ExtendedMath.cc:60
const LiquidBridgeWilletSpecies * getSpecies() const
A dynamic_cast of BaseSpecies type pointer to a pointer of type LiquidBridgeWilletSpecies.
Mdouble getElasticEnergy() const
Returns the amount of Elastic energy involved in an interaction. Basically used in case you want to w...
bool wasInContact_
A history parameter to store if the particles were in contact or not. Useful to compute adhesive forc...
const BaseSpecies * getBaseSpecies() const
Return a constant point to BaseSpecies of the interaction.
std::string getBaseName() const
Returns the name of the interaction, see Interaction.h.
const Mdouble pi
Definition: ExtendedMath.h:42
LiquidBridgeWilletInteraction(BaseInteractable *P, BaseInteractable *I, Mdouble timeStamp)
Constructor.
const Vec3D & getNormal() const
Gets the normal vector between the two interacting objects.
Defines the liquid bridge willet interaction between two particles or walls.
Mdouble getOverlap() const
Returns a Mdouble with the current overlap between the two interacting objects.
void addForce(Vec3D force)
add an force increment to the total force.
LiquidBridgeWilletSpecies contains the parameters used to describe a short-range force caused by liqu...
Defines the basic properties that a interactable object can have.
virtual ~LiquidBridgeWilletInteraction()
Destructor.
void read(std::istream &is)
Interaction read function, which accepts an std::istream as input.