zhyang-dev/CFDEMcoupling-PFM
1
0
Fork 0
mirror of https://github.com/ParticulateFlow/CFDEMcoupling-PFM.git synced 2025-12-08 06:37:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Allow turbulentDispersion model to use kinetic energy either from object registry or calculated from turbulence models.

Browse Source
This commit is contained in:
Thomas Lichtenegger
2020-11-13 10:13:37 +01:00
parent d3c10ba24d
commit 1a37e99dfd
2 changed files with 45 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
src/lagrangian/cfdemParticle/subModels/forceModel/turbulentDispersion/turbulentDispersion.C
View File

@ -74,13 +74,16 @@ turbulentDispersion::turbulentDispersion
sm.mesh(),
dimensionedScalar("zero", dimensionSet(0,0,0,0,0,0,0), 0.0)
),
minTurbKinetcEnergy_(propsDict_.lookupOrDefault<scalar>("minTurbKinetcEnergy", 0.0)),
minTurbKineticEnergy_(propsDict_.lookupOrDefault<scalar>("minTurbKineticEnergy", 0.0)),
turbKineticEnergyFieldName_(propsDict_.lookupOrDefault<word>("turbKineticEnergyFieldName","")),
turbKineticEnergy_(NULL),
existTurbKineticEnergyInObjReg_(false),
voidfractionFieldName_(propsDict_.lookupOrDefault<word>("voidfractionFieldName","voidfraction")),
voidfraction_(sm.mesh().lookupObject<volScalarField> (voidfractionFieldName_)),
critVoidfraction_(propsDict_.lookupOrDefault<scalar>("critVoidfraction", 0.9)),
ranGen_(clock::getTime()+pid())
{
if(ignoreCellsName_ != "none")
if (ignoreCellsName_ != "none")
{
ignoreCells_.set(new cellSet(particleCloud_.mesh(),ignoreCellsName_));
Info << type << ": ignoring fluctuations in cellSet " << ignoreCells_().name() <<
@ -90,7 +93,7 @@ turbulentDispersion::turbulentDispersion
// define a field to indicate if a cell is next to boundary
label cellI = -1;
forAll(mesh_.boundary(),patchI)
forAll (mesh_.boundary(),patchI)
{
word patchName = mesh_.boundary()[patchI].name();
if (patchName.rfind("procB",0) == 0) continue;
@ -102,6 +105,29 @@ turbulentDispersion::turbulentDispersion
}
}
if (turbKineticEnergyFieldName_ != "")
{
existTurbKineticEnergyInObjReg_ = true;
volScalarField& k(const_cast<volScalarField&>(sm.mesh().lookupObject<volScalarField> (turbKineticEnergyFieldName_)));
turbKineticEnergy_ = &k;
}
else
{
turbKineticEnergy_ = new volScalarField
(
IOobject
(
"turbKinEnergy",
mesh_.time().timeName(),
mesh_,
IOobject::NO_READ,
IOobject::NO_WRITE
),
mesh_,
dimensionedScalar("zero", dimensionSet(0,2,-2,0,0), 0)
);
}
// make sure this is the last force model in list so that fluid velocity does not get overwritten
label numLastForceModel = sm.nrForceModels();
word lastForceModel = sm.forceModels()[numLastForceModel-1];
@ -116,6 +142,7 @@ turbulentDispersion::turbulentDispersion
turbulentDispersion::~turbulentDispersion()
{
if (!existTurbKineticEnergyInObjReg_) delete turbKineticEnergy_;
}
// * * * * * * * * * * * * * * * private Member Functions * * * * * * * * * * * * * //
@ -130,7 +157,10 @@ bool turbulentDispersion::ignoreCell(label cell) const
void turbulentDispersion::setForce() const
{
const volScalarField turbKinetcEnergy(particleCloud_.turbulence().k());
if (!existTurbKineticEnergyInObjReg_)
{
*turbKineticEnergy_ = particleCloud_.turbulence().k()();
}
label cellI = -1;
label patchID = -1;
@ -142,7 +172,7 @@ void turbulentDispersion::setForce() const
vector position = vector::zero;
word patchName("");
interpolationCellPoint<scalar> turbKinetcEnergyInterpolator_(turbKinetcEnergy);
interpolationCellPoint<scalar> turbKineticEnergyInterpolator_(*turbKineticEnergy_);
for(int index = 0;index < particleCloud_.numberOfParticles(); ++index)
{
@ -156,14 +186,14 @@ void turbulentDispersion::setForce() const
if (interpolate_)
{
position = particleCloud_.position(index);
k = turbKinetcEnergyInterpolator_.interpolate(position,cellI);
k = turbKineticEnergyInterpolator_.interpolate(position,cellI);
}
else
{
k = turbKinetcEnergy[cellI];
k = (*turbKineticEnergy_)[cellI];
}
if (k < minTurbKinetcEnergy_) k = minTurbKinetcEnergy_;
if (k < minTurbKineticEnergy_) k = minTurbKineticEnergy_;
flucU=unitFlucDir()*Foam::sqrt(2.0*k);

8
src/lagrangian/cfdemParticle/subModels/forceModel/turbulentDispersion/turbulentDispersion.H
View File

@ -60,7 +60,13 @@ protected:
mutable volScalarField wallIndicatorField_;
scalar minTurbKinetcEnergy_;
scalar minTurbKineticEnergy_;
word turbKineticEnergyFieldName_;
volScalarField* turbKineticEnergy_;
bool existTurbKineticEnergyInObjReg_;
word voidfractionFieldName_;