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/////////////////////////////////////////////////////////////
// //
// Copyright (c) 2003-2014 by The University of Queensland //
// Centre for Geoscience Computing //
// http://earth.uq.edu.au/centre-geoscience-computing //
// //
// Primary Business: Brisbane, Queensland, Australia //
// Licensed under the Open Software License version 3.0 //
// http://www.apache.org/licenses/LICENSE-2.0 //
// //
/////////////////////////////////////////////////////////////
#include <mpi.h>
#include "Foundation/console.h"
#include "Model/RotThermElasticInteraction.h"
CRotThermElasticIGP::CRotThermElasticIGP()
: AIGParam(),
m_kr(0.0),
diffusivity(0.0)
{
}
CRotThermElasticIGP::CRotThermElasticIGP(
const std::string &name,
double normalK,
double thermalDiffusivity
)
: AIGParam(name),
m_kr(normalK),
diffusivity(thermalDiffusivity)
{
}
CRotThermElasticInteraction::CRotThermElasticInteraction() : ARotThermPairInteraction()
{
m_kr = 0.0;
m_nForce = 0.0;
m_force = Vec3(0.0,0.0,0.0);
m_diffusivity = 0.0;
}
CRotThermElasticInteraction::CRotThermElasticInteraction(
CRotThermParticle* p1,
CRotThermParticle* p2,
const CRotThermElasticIGP& param
)
: ARotThermPairInteraction(p1,p2)
{
// m_kr=param.m_kr;
// wyc added 22/02/2005
double min_r ;
double ran_ratio ;
double ran_ratioH ;
if (m_p1->getRad()<= m_p2->getRad() ) min_r = m_p1->getRad() ;
else min_r = m_p2->getRad() ;
// double ran_ratio = 2.0*min_r/(m_p1->getRad()+m_p2->getRad());
if(m_p1->getDo2dCalculations()) { // 2D
ran_ratio = 2.0*min_r/(m_p1->getRad()+m_p2->getRad());
ran_ratioH = 2.0*min_r*(m_p1->getRad()+m_p2->getRad());
}else{ // 3D
ran_ratio = 2.0*min_r*min_r/(m_p1->getRad()+m_p2->getRad());
ran_ratioH = 2.0*min_r*min_r*(m_p1->getRad()+m_p2->getRad());
}
m_kr = ran_ratio*param.m_kr;
m_nForce = 0.0;
m_force = Vec3(0.0,0.0,0.0);
m_D = p1->getPos()-p2->getPos();
m_diffusivity = ran_ratioH*param.diffusivity;
}
Vec3 CRotThermElasticInteraction::getForce() const
{
/*
Vec3 force = Vec3(0.0, 0.0, 0.0);
Vec3 D = m_p1->getPos()-m_p2->getPos();
double dist = D*D;
double eq_dist = m_p1->getRad()+m_p2->getRad();
if (dist < (eq_dist*eq_dist)) {
dist = sqrt(dist);
force = D*(m_kr*(dist - eq_dist)/dist);
}
return force;
*/
return m_force;
}
/*!
Calculate free elastic forces. 23 Flops if in contact, 10 Flops if not
*/
void CRotThermElasticInteraction::calcForces()
{
// console.XDebug() << "elastic interaction: [" << m_p1->getID() << " - " << m_p2->getID() << "]" << m_p1->getPos() << m_p2->getPos() << "\n";
Vec3 D=m_p1->getPos()-m_p2->getPos();
double dist=D*D;
double eq_dist=m_p1->getRad()+m_p2->getRad();
//cout << "wyc in CRotEla ::calcF " << m_p1->getID() << " - " << m_p2->getID() <<endl;
if(dist<(eq_dist*eq_dist)){ // contact -> calculate forces
dist=sqrt(dist);
// Vec3 force=D*m_kr*(dist-eq_dist)/dist;
m_force=D.unit()*m_kr*(D.norm()-eq_dist);
// cout << "dist= " << 2-D.norm() << " eq_dist= " <<2-eq_dist << endl;
// cout << " D.unit= " << D.unit() <<" "<<D.norm()-eq_dist << endl;
//zjr
// cout << m_p1->getID() << " - " << m_p2->getID() << endl;
//zjr
// cout << "wyc in elastic: " << force << endl ;
//zjr
// cout << m_p1->getPos() << " - " << m_p2->getPos() << endl;
Vec3 pos=m_p2->getPos()+(m_p2->getRad()/eq_dist)*D;
m_p1->applyForce(-1.0*m_force,pos);
m_p2->applyForce(m_force,pos);
m_cpos=pos;
} else { // no contact -> all forces are 0
m_force = Vec3(0.0,0.0,0.0);
m_nForce = 0.0;
}
}
void CRotThermElasticInteraction::calcHeatTrans()
{
double eta = 1.5 ;
Vec3 D=m_p1->getPos()-m_p2->getPos();
double Rij2 = D.norm2();
double d_temp = m_p2->getTemperature() - m_p1->getTemperature() ;
double heatij = eta*m_diffusivity*d_temp/Rij2 ;
m_p1->applyHeatTrans(heatij) ;
m_p2->applyHeatTrans(-heatij) ;
}
/*!
get the potential energy stored in the interaction
*/
double CRotThermElasticInteraction::getPotentialEnergy() const
{
// const Vec3 normalForce = getForce();
// return (0.5*normalForce*normalForce/m_kr);
return (m_kr!=0.0) ? 0.5*(m_nForce*m_nForce)/m_kr : 0.0;
}
/*!
Get the particle member function which returns a scalar field of a given name.
\param name the name of the field
*/
CRotThermElasticInteraction::ScalarFieldFunction CRotThermElasticInteraction::getScalarFieldFunction(const string& name)
{
CRotThermElasticInteraction::ScalarFieldFunction sf = NULL;
if (name=="potential_energy")
{
sf=&CRotThermElasticInteraction::getPotentialEnergy;
} else if (name=="count") {
sf=&CRotThermElasticInteraction::Count;
} else {
sf=NULL;
cerr << "ERROR - invalid name for interaction scalar access function" << endl;
}
return sf;
}
/*!
Get the particle member function which returns a checked scalar field of a given name.
\param name the name of the field
*/
CRotThermElasticInteraction::CheckedScalarFieldFunction CRotThermElasticInteraction::getCheckedScalarFieldFunction(const string& name)
{
CRotThermElasticInteraction::CheckedScalarFieldFunction sf=NULL;
cerr << "ERROR - invalid name for interaction vector access function" << endl;
return sf;
}
/*!
Get the particle member function which returns a vector field of a given name.
\param name the name of the field
*/
CRotThermElasticInteraction::VectorFieldFunction CRotThermElasticInteraction::getVectorFieldFunction(const string& name)
{
CRotThermElasticInteraction::VectorFieldFunction vf;
if (name=="force"){
vf=&CRotThermElasticInteraction::getForce;
} else {
vf=NULL;
cerr << "ERROR - invalid name for interaction vector access function" << endl;
}
return vf;
}
/*!
save restart data to ostream
\param oStream the output stream
*/
void CRotThermElasticInteraction::saveRestartData(std::ostream &oStream)
{
oStream << m_id[0] << " ";
oStream << m_id[1] << " ";
oStream << m_init << " ";
oStream << m_kr << " ";
oStream << m_diffusivity << " ";
oStream << m_D;
}
/*!
load restart data from stream
\param iStream the input stream
*/
void CRotThermElasticInteraction::loadRestartData(std::istream &iStream)
{
iStream >> m_id[0];
iStream >> m_id[1];
iStream >> m_init ;
iStream >> m_kr;
iStream >> m_diffusivity;
iStream >> m_D;
}
ostream& operator<<(ostream& ost,const CRotThermElasticInteraction& BI)
{
ost << "[" << BI.m_p1->getID() << " - " << BI.m_p2->getID() << "]";
return ost;
}
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