pressureWork.C

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#include "pressureWork.H"
#include "addToRunTimeSelectionTable.H"
#include "coupledToThermalFluid.H"
#include "fluidLagrangianThermo.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Lagrangian
{
    defineTypeNameAndDebug(pressureWork, 0);
    addToRunTimeSelectionTable(LagrangianModel, pressureWork, dictionary);
}
}
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::Lagrangian::pressureWork::pressureWork
(
    const word& name,
    const LagrangianMesh& mesh,
    const dictionary& modelDict,
    const dictionary& stateDict
)
:
    LagrangianModel(name, mesh),
    cloudLagrangianModel(static_cast<const LagrangianModel&>(*this)),
    thermalCloud_(cloud<clouds::thermal>()),
    pPrevPtr_(nullptr)
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
Foam::wordList Foam::Lagrangian::pressureWork::addSupFields() const
{
    return wordList({thermalCloud_.e.name()});
}
 
 
bool Foam::Lagrangian::pressureWork::addsSupToField
(
    const word& fieldName,
    const word& eqnFieldName
) const
{
    return
        fieldName == thermalCloud_.e.name()
     && (
            eqnFieldName == thermalCloud_.e.name()
         || eqnFieldName == cloud<clouds::coupledToThermalFluid>().hec.name()
        );
}
 
 
void Foam::Lagrangian::pressureWork::preAddSup
(
    const LagrangianSubScalarField& deltaT,
    const bool final
)
{
    const LagrangianSubMesh& subMesh = deltaT.mesh();
 
    const fluidLagrangianThermo& fluidThermo =
        thermalCloud_.thermo<fluidLagrangianThermo>(*this);
    const LagrangianSubScalarSubField p(subMesh.sub(fluidThermo.p()));
 
    pPrevPtr_.set(new LagrangianSubScalarField(p));
}
 
 
void Foam::Lagrangian::pressureWork::addSup
(
    const LagrangianSubScalarField& deltaT,
    const LagrangianSubScalarSubField& vOrM,
    const LagrangianSubScalarSubField& e,
    LagrangianEqn<scalar>& eqn
) const
{
    const LagrangianSubMesh& subMesh = deltaT.mesh();
 
    const LagrangianSubScalarField& m = thermalCloud_.m(subMesh);
    const LagrangianSubScalarSubField& rho = thermalCloud_.rho(subMesh);
 
    const fluidLagrangianThermo& fluidThermo =
        thermalCloud_.thermo<fluidLagrangianThermo>(*this);
    const LagrangianSubScalarSubField p(subMesh.sub(fluidThermo.p()));
 
    // Evaluate the time derivative of the specific volume
    tmp<LagrangianEqn<scalar>> dOneByRhoDt =
        - Lagrangianm::ddt0(rho)/(rho*rho.oldTime());
 
    // If this is the particle energy equation, then construct corrections to
    // the above time derivative. If not then just apply it directly.
    if (eqn.isPsi(e))
    {
        tmp<LagrangianEqn<scalar>> dOneByRhoDtCorr =
            tmp<LagrangianEqn<scalar>>
            (
                new LagrangianEqn<scalar>(subMesh)
            );
 
        // Correct for changes in pressure
        const LagrangianSubScalarSubField psi(subMesh.sub(fluidThermo.psi()));
        dOneByRhoDtCorr.ref().deltaTSu -=
            psi*(p - pPrevPtr_())/(rho*rho.oldTime());
 
        // Correct for changes in energy
        const LagrangianSubScalarSubField Cv(subMesh.sub(fluidThermo.Cv()));
        tmp<LagrangianSubScalarField> alphavByRhoCv =
            fluidThermo.alphav(subMesh)/(rho*Cv);
        dOneByRhoDtCorr.ref().deltaTSp += alphavByRhoCv();
        dOneByRhoDtCorr.ref().deltaTSu -= alphavByRhoCv()*e;
 
        // Correct for non-ideal thermodynamic modelling
        tmp<LagrangianSubScalarField> gamma(fluidThermo.Cp(subMesh)/Cv);
        dOneByRhoDtCorr.ref() /= gamma - p*alphavByRhoCv;
 
        eqn -= m*p*(dOneByRhoDt + dOneByRhoDtCorr);
    }
    else
    {
        const LagrangianSubScalarField& pc =
            cloud<clouds::coupledToThermalFluid>().pc(subMesh);
 
        eqn -= m*pc*dOneByRhoDt;
    }
}
 
 
void Foam::Lagrangian::pressureWork::postAddSup
(
    const LagrangianSubScalarField& deltaT,
    const bool final
)
{
    pPrevPtr_.clear();
}
 
 
// ************************************************************************* //