ParhamiMcMeekingSinterInteraction.cc

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#include "ParhamiMcMeekingSinterInteraction.h"
#include "Species/AdhesiveForceSpecies/ParhamiMcMeekingSinterSpecies.h"
#include "Particles/BaseParticle.h"
#include "InteractionHandler.h"
#include <iomanip>
#include <fstream>

ParhamiMcMeekingSinterInteraction::ParhamiMcMeekingSinterInteraction(BaseInteractable* P, BaseInteractable* I,
                                                                     unsigned timeStamp)
        : BaseInteraction(P, I, timeStamp)
{
#ifdef DEBUG_CONSTRUCTOR
    std::cout<<"ParhamiMcMeekingSinterInteraction::ParhamiMcMeekingSinterInteraction() finished"<<std::endl;
#endif
}

ParhamiMcMeekingSinterInteraction::ParhamiMcMeekingSinterInteraction(const ParhamiMcMeekingSinterInteraction& p)
        : BaseInteraction(p)
{
#ifdef DEBUG_CONSTRUCTOR
    std::cout<<"ParhamiMcMeekingSinterInteraction::ParhamiMcMeekingSinterInteraction(const ParhamiMcMeekingSinterInteraction &p finished"<<std::endl;
#endif
}

ParhamiMcMeekingSinterInteraction::ParhamiMcMeekingSinterInteraction()
{
#ifdef MERCURY_USE_MPI
    logger(FATAL,"ParhamiMcMeekingSinterInteractions are currently not implemented in parallel MercuryDPM");
#endif
    
}

ParhamiMcMeekingSinterInteraction::~ParhamiMcMeekingSinterInteraction()
{
#ifdef DEBUG_DESTRUCTOR
    std::cout<<"ParhamiMcMeekingSinterInteraction::~ParhamiMcMeekingSinterInteraction() finished"<<std::endl;
#endif
}

void ParhamiMcMeekingSinterInteraction::write(std::ostream& os  UNUSED) const
{}

void ParhamiMcMeekingSinterInteraction::read(std::istream& is  UNUSED)
{}

void ParhamiMcMeekingSinterInteraction::computeAdhesionForce()
{
    //std::cout << "ParhamiMcMeekingSinterInteraction::computeAdhesionForce" << std::endl;
    const SpeciesType* species = getSpecies();
    Mdouble effectiveDiameter = 2.0 * getEffectiveRadius(); // effectiveRadius = (r1*r2)/(r1+r2)
    Mdouble contactRadiusSquared = 2.0 * effectiveDiameter * getOverlap();
    Vec3D tangentialRelativeVelocity = getRelativeVelocity() - getNormal() * getNormalRelativeVelocity();
    
    //viscous force is viscosityCoefficient_*contactRadius^4*normalRelativeVelocity
    //adhesion force is adhesionCoefficient_*radius
    Mdouble normalForce = -species->getAdhesionCoefficient() * effectiveDiameter
                          - species->getViscosityCoefficient() * contactRadiusSquared * contactRadiusSquared *
                            getNormalRelativeVelocity();
    //tangential force is slidingFrictionCoefficient_*contactRadius^2*radius*tangentialRelativeVelocity
    Vec3D tangentialForce = -species->getSlidingFrictionCoefficient() * contactRadiusSquared * effectiveDiameter *
                            tangentialRelativeVelocity;
    //std::cout << "P" << species->getAdhesionCoefficient() << species->getViscosityCoefficient() << species->getSlidingFrictionCoefficient() << std::endl;
    Mdouble attractiveForce = -species->getAdhesionCoefficient() * effectiveDiameter;
    //std::cout << effectiveDiameter << "Fs=" << species->getAdhesionCoefficient() * effectiveDiameter
    //<< " Fv/del/del/del=" << 4.0*species->getViscosityCoefficient()*effectiveDiameter*effectiveDiameter << std::endl;
    //<< species->getViscosityCoefficient() << " d" <<contactRadiusSquared<< " d" <<getNormalRelativeVelocity() << std::endl;
    addForce(getNormal() * normalForce + tangentialForce);
}

Mdouble ParhamiMcMeekingSinterInteraction::getElasticEnergy() const
{
    return 0.0;
}

const ParhamiMcMeekingSinterInteraction::SpeciesType* ParhamiMcMeekingSinterInteraction::getSpecies() const
{
    return static_cast<const SpeciesType*> (getBaseSpecies()->getAdhesiveForce()); //downcast
}

std::string ParhamiMcMeekingSinterInteraction::getBaseName() const
{
    return "ParhamiMcMeekingSinter";
}