void Foam::MULES::explicitSolve
(
const RdeltaTType& rDeltaT,
const RhoType& rho,
volScalarField& psi,
const surfaceScalarField& phiPsi,
const SpType& Sp,
const SuType& Su
)
{
Info<< "MULES: Solving for " << psi.name() << endl;
const fvMesh& mesh = psi.mesh();
scalarField& psiIf = psi;
const scalarField& psi0 = psi.oldTime();
psiIf = 0.0;
fvc::surfaceIntegrate(psiIf, phiPsi);
if (mesh.moving())
{
psiIf =
(
mesh.Vsc0()().field()*rho.oldTime().field()
*psi0*rDeltaT/mesh.Vsc()().field()
+ Su.field()
- psiIf
)/(rho.field()*rDeltaT - Sp.field());
}
else
{
psiIf =
(
rho.oldTime().field()*psi0*rDeltaT
+ Su.field()
- psiIf
)/(rho.field()*rDeltaT - Sp.field());
}
psi.correctBoundaryConditions();
}
void Foam::MULES::explicitSolve
(
const RhoType& rho,
volScalarField& psi,
const surfaceScalarField& phi,
surfaceScalarField& phiPsi,
const SpType& Sp,
const SuType& Su,
const scalar psiMax,
const scalar psiMin
)
{
Info<< "MULES: Solving for " << psi.name() << endl;
const fvMesh& mesh = psi.mesh();
psi.correctBoundaryConditions();
surfaceScalarField phiBD(upwind<scalar>(psi.mesh(), phi).flux(psi));
surfaceScalarField& phiCorr = phiPsi;
phiCorr -= phiBD;
scalarField allLambda(mesh.nFaces(), 1.0);
slicedSurfaceScalarField lambda
(
IOobject
(
"lambda",
mesh.time().timeName(),
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
mesh,
dimless,
allLambda,
false // Use slices for the couples
);
limiter
(
allLambda,
rho,
psi,
phiBD,
phiCorr,
Sp,
Su,
psiMax,
psiMin,
3
);
phiPsi = phiBD + lambda*phiCorr;
scalarField& psiIf = psi;
const scalarField& psi0 = psi.oldTime();
const scalar deltaT = mesh.time().deltaTValue();
psiIf = 0.0;
fvc::surfaceIntegrate(psiIf, phiPsi);
if (mesh.moving())
{
psiIf =
(
mesh.Vsc0()().field()*rho.oldTime().field()
*psi0/(deltaT*mesh.Vsc()().field())
+ Su.field()
- psiIf
)/(rho.field()/deltaT - Sp.field());
}
else
{
psiIf =
(
rho.oldTime().field()*psi0/deltaT
+ Su.field()
- psiIf
)/(rho.field()/deltaT - Sp.field());
}
psi.correctBoundaryConditions();
}
void Foam::MULES::implicitSolve
(
const RhoType& rho,
volScalarField& psi,
const surfaceScalarField& phi,
surfaceScalarField& phiPsi,
const SpType& Sp,
const SuType& Su,
const scalar psiMax,
const scalar psiMin
)
{
const fvMesh& mesh = psi.mesh();
const dictionary& MULEScontrols =
mesh.solutionDict().solverDict(psi.name());
label maxIter
(
readLabel(MULEScontrols.lookup("maxIter"))
);
label nLimiterIter
(
readLabel(MULEScontrols.lookup("nLimiterIter"))
);
scalar maxUnboundedness
(
readScalar(MULEScontrols.lookup("maxUnboundedness"))
);
scalar CoCoeff
(
readScalar(MULEScontrols.lookup("CoCoeff"))
);
scalarField allCoLambda(mesh.nFaces());
{
surfaceScalarField Cof =
mesh.time().deltaT()*mesh.surfaceInterpolation::deltaCoeffs()
*mag(phi)/mesh.magSf();
slicedSurfaceScalarField CoLambda
(
IOobject
(
"CoLambda",
mesh.time().timeName(),
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
mesh,
dimless,
allCoLambda,
false // Use slices for the couples
);
CoLambda == 1.0/max(CoCoeff*Cof, scalar(1));
}
scalarField allLambda(allCoLambda);
//scalarField allLambda(mesh.nFaces(), 1.0);
slicedSurfaceScalarField lambda
(
IOobject
(
"lambda",
mesh.time().timeName(),
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
mesh,
dimless,
allLambda,
false // Use slices for the couples
);
linear<scalar> CDs(mesh);
upwind<scalar> UDs(mesh, phi);
//fv::uncorrectedSnGrad<scalar> snGrads(mesh);
fvScalarMatrix psiConvectionDiffusion
(
fvm::ddt(rho, psi)
+ fv::gaussConvectionScheme<scalar>(mesh, phi, UDs).fvmDiv(phi, psi)
//- fv::gaussLaplacianScheme<scalar, scalar>(mesh, CDs, snGrads)
//.fvmLaplacian(Dpsif, psi)
- fvm::Sp(Sp, psi)
- Su
);
surfaceScalarField phiBD = psiConvectionDiffusion.flux();
surfaceScalarField& phiCorr = phiPsi;
phiCorr -= phiBD;
for (label i=0; i<maxIter; i++)
{
if (i != 0 && i < 4)
{
allLambda = allCoLambda;
}
limiter
(
allLambda,
rho,
psi,
phiBD,
phiCorr,
Sp.field(),
Su.field(),
psiMax,
psiMin,
nLimiterIter
);
solve
(
psiConvectionDiffusion + fvc::div(lambda*phiCorr),
MULEScontrols
);
scalar maxPsiM1 = gMax(psi.internalField()) - 1.0;
scalar minPsi = gMin(psi.internalField());
scalar unboundedness = max(max(maxPsiM1, 0.0), -min(minPsi, 0.0));
if (unboundedness < maxUnboundedness)
{
break;
}
else
{
Info<< "MULES: max(" << psi.name() << " - 1) = " << maxPsiM1
<< " min(" << psi.name() << ") = " << minPsi << endl;
phiBD = psiConvectionDiffusion.flux();
/*
word gammaScheme("div(phi,gamma)");
word gammarScheme("div(phirb,gamma)");
const surfaceScalarField& phir =
mesh.lookupObject<surfaceScalarField>("phir");
phiCorr =
fvc::flux
(
phi,
psi,
gammaScheme
)
+ fvc::flux
(
-fvc::flux(-phir, scalar(1) - psi, gammarScheme),
psi,
gammarScheme
)
- phiBD;
*/
}
}
phiPsi = psiConvectionDiffusion.flux() + lambda*phiCorr;
}
