void Foam::cfdemCloud::setForces()
{
resetArray(fluidVel_,numberOfParticles(),3);
resetArray(impForces_,numberOfParticles(),3);
resetArray(expForces_,numberOfParticles(),3);
resetArray(DEMForces_,numberOfParticles(),3);
resetArray(Cds_,numberOfParticles(),1);
for (int i=0;i<cfdemCloud::nrForceModels();i++) cfdemCloud::forceM(i).setForce();
}
bool Foam::cfdemCloudIB::evolve()
{
numberOfParticlesChanged_ = false;
arraysReallocated_=false;
bool doCouple=false;
if (dataExchangeM().couple())
{
Info << "\n timeStepFraction() = " << dataExchangeM().timeStepFraction() << endl;
doCouple=true;
if(verbose_) Info << "- getDEMdata()" << endl;
getDEMdata();
Info << "nr particles = " << numberOfParticles() << endl;
// search cellID of particles
if(verbose_) Info << "- findCell()" << endl;
locateM().findCell(NULL,positions_,cellIDs_,numberOfParticles());
if(verbose_) Info << "findCell done." << endl;
// set void fraction field
if(verbose_) Info << "- setvoidFraction()" << endl;
voidFractionM().setvoidFraction(NULL,voidfractions_,particleWeights_,particleVolumes_);
if(verbose_) Info << "setvoidFraction done." << endl;
// set particles forces
if(verbose_) Info << "- setForce(forces_)" << endl;
for(int index = 0;index < numberOfParticles_; ++index){
for(int i=0;i<3;i++){
impForces_[index][i] = 0;
expForces_[index][i] = 0;
DEMForces_[index][i] = 0;
}
}
for (int i=0;i<nrForceModels();i++) forceM(i).setForce();
if(verbose_) Info << "setForce done." << endl;
// write DEM data
if(verbose_) Info << " -giveDEMdata()" << endl;
giveDEMdata();
}
Info << "evolve done." << endl;
//if(verbose_) #include "debugInfo.H";
// do particle IO
IOM().dumpDEMdata();
return doCouple;
}
void Foam::cfdemCloud::setForces()
{
resetArray(fluidVel_,numberOfParticles(),3);
resetArray(impForces_,numberOfParticles(),3);
resetArray(expForces_,numberOfParticles(),3);
resetArray(DEMForces_,numberOfParticles(),3);
resetArray(Cds_,numberOfParticles(),1);
//=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
//reset all USER-defined particle fields
zeroizeParticleDatFieldsUserCFDEMToExt();
//=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
for (int i=0;i<cfdemCloud::nrForceModels();i++) cfdemCloud::forceM(i).setForce();
}
ofxMSAPhysics* ofxMSAPhysics::addToCollision(ofxMSAParticle* p) {
for(int i=0; i< numberOfParticles(); i++) {
ofxMSAParticle *target = getParticle(i);
if(target->hasCollision()) makeCollision(target, p);
}
return this;
}
void Foam::cfdemCloud::setNumberOfParticles(int nP)
{
if(nP != numberOfParticles())
{
numberOfParticlesChanged_ = true;
numberOfParticles_ = nP;
}
}
void Foam::cfdemCloud::writeScalarFieldToTerminal(double**& array)
{
// init double array
for (int i=0; i<numberOfParticles(); i++)
{
Info << array[i][0] << endl;
}
}
void Foam::cfdemCloud::setPos(double**& pos)
{
for(int index = 0;index < numberOfParticles(); ++index)
{
for(int i=0;i<3;i++){
positions_[index][i] = pos[index][i];
}
}
}
void Foam::cfdemCloudIB::calcVelocityCorrection
(
volScalarField& p,
volVectorField& U,
volScalarField& phiIB,
volScalarField& voidfraction
)
{
label cellI=0;
vector uParticle(0,0,0);
vector rVec(0,0,0);
vector velRot(0,0,0);
vector angVel(0,0,0);
for(int index=0; index< numberOfParticles(); index++)
{
//if(regionM().inRegion()[index][0])
//{
for(int subCell=0;subCell<voidFractionM().cellsPerParticle()[index][0];subCell++)
{
//Info << "subCell=" << subCell << endl;
cellI = cellIDs()[index][subCell];
if (cellI >= 0)
{
// calc particle velocity
for(int i=0;i<3;i++) rVec[i]=U.mesh().C()[cellI][i]-position(index)[i];
for(int i=0;i<3;i++) angVel[i]=angularVelocities()[index][i];
velRot=angVel^rVec;
for(int i=0;i<3;i++) uParticle[i] = velocities()[index][i]+velRot[i];
// impose field velocity
U[cellI]=(1-voidfractions_[index][subCell])*uParticle+voidfractions_[index][subCell]*U[cellI];
}
}
//}
}
// make field divergence free - set reference value in case it is needed
fvScalarMatrix phiIBEqn
(
fvm::laplacian(phiIB) == fvc::div(U) + fvc::ddt(voidfraction)
);
if(phiIB.needReference())
{
phiIBEqn.setReference(pRefCell_, pRefValue_);
}
phiIBEqn.solve();
U=U-fvc::grad(phiIB);
U.correctBoundaryConditions();
// correct the pressure as well
p=p+phiIB/U.mesh().time().deltaT(); // do we have to account for rho here?
p.correctBoundaryConditions();
}
void Foam::cfdemCloud::writeVectorFieldToTerminal(double**& array)
{
// init double array
for (int i=0; i<numberOfParticles(); i++)
{
for (int j=0; j<3; j++) Info << array[i][j] << "\t";
Info << endl;
}
}
void SphSystemData2::updateDensities() {
auto p = positions();
auto d = densities();
const double m = mass();
parallelFor(
kZeroSize,
numberOfParticles(),
[&] (size_t i) {
double sum = sumOfKernelNearby(p[i]);
d[i] = m * sum;
});
}
ofxMSAParticle* ofxMSAPhysics::addParticle(ofxMSAParticle *p) {
p->verbose = verbose;
_particles.push_back(p);
p->setInstanceName(string("particle ") + ofToString(_particles.size(), 0));
p->_params = ¶ms;
p->_physics = this;
#ifdef MSAPHYSICS_USE_RECORDER
if(_replayMode == OFX_MSA_DATA_SAVE)
_recorder.setSize(numberOfParticles());
#endif
p->retain();
return p; // so you can configure the particle or use for creating constraints
}
void Foam::cfdemCloud::CheckExistanceAndReadDEMData()
{
int nmr_of_part=IOM().LookForDEMdata(); //IOM().getNumberOfParticles("positions_nh");
//if these files are not empty
if(nmr_of_part>0)
{
Pout <<"Found "<< nmr_of_part<<" particles."<< endl;
if(nmr_of_part>numberOfParticles())
{
FatalError<< "Amount of memory for "<<nmr_of_part<<" particles from prev. simulation exceeds already allocated memory for "<<numberOfParticles()<<" particle. \nIncrease maxNumberOfParticles in coupllingProperties file." << abort(FatalError);
}
reAllocArrays();
setNumberOfParticles(nmr_of_part);
Info << "- Starting to upload it."<< endl;
//fetching data from files into DEM arrays
IOM().getExistingDEMData("positions_nh","vector-atom",positions_);
IOM().getExistingDEMData("r_nh","scalar-atom",radii_);
IOM().getExistingDEMData("m_nh","scalar-atom",mass_);
IOM().getExistingDEMData("v_nh","vector-atom",velocities_);
IOM().getExistingDEMData("DEMForces_nh","vector-atom",DEMForces_);
IOM().getExistingDEMData("tTurbs_nh","scalar-atom",tTurb_);
IOM().getExistingDEMData("tTurbInts_nh","scalar-atom",tTurbInt_);
IOM().getExistingDEMData("fluidTurbVels_nh","vector-atom",fluidTurbVel_);
//pushing data to DEM code
dataExchangeM().giveDataFromPreviosSimulation(nmr_of_part, positions_, velocities_, radii_, mass_,DEMForces_,tTurb_,tTurbInt_,fluidTurbVel_);
//Info << "All data is loaded."<< endl<< endl;
}
else
{
//Info << "************** FILES PRESENT BUT EMPTY. ************************************"<< endl<< endl;
}
}
void Foam::cfdemCloud::findCells()
{
locateM().findCell(NULL,positions_,cellIDs_,numberOfParticles());
}
ofxMSAParticle* ofxMSAPhysics::getParticle(uint i) {
return i < numberOfParticles() ? _particles[i] : NULL;
}
