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{
volScalarField rAU("rAU", 1.0/UEqn.A());
surfaceScalarField rAUf("rAUf", fvc::interpolate(rAU));
volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p_rgh));
surfaceScalarField phiHbyA
(
"phiHbyA",
fvc::flux(HbyA)
+ fvc::interpolate(rho*rAU)*fvc::ddtCorr(U, phi)
);
surfaceScalarField phig
(
(
mixture.surfaceTensionForce()
- ghf*fvc::snGrad(rho)
)*rAUf*mesh.magSf()
);
phiHbyA += phig;
// Update the pressure BCs to ensure flux consistency
constrainPressure(p_rgh, U, phiHbyA, rAUf);
PtrList<fvScalarMatrix> p_rghEqnComps(mixture.phases().size());
label phasei = 0;
forAllConstIter
(
PtrDictionary<phaseModel>,
mixture.phases(),
phase
)
{
const rhoThermo& thermo = phase().thermo();
const volScalarField& rho = thermo.rho()();
p_rghEqnComps.set
(
phasei,
(
fvc::ddt(rho) + thermo.psi()*correction(fvm::ddt(p_rgh))
+ fvc::div(phi, rho) - fvc::Sp(fvc::div(phi), rho)
).ptr()
);
phasei++;
}
// Cache p_rgh prior to solve for density update
volScalarField p_rgh_0(p_rgh);
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix p_rghEqnIncomp
(
fvc::div(phiHbyA)
- fvm::laplacian(rAUf, p_rgh)
);
tmp<fvScalarMatrix> p_rghEqnComp;
phasei = 0;
forAllConstIter
(
PtrDictionary<phaseModel>,
mixture.phases(),
phase
)
{
tmp<fvScalarMatrix> hmm
(
(max(phase(), scalar(0))/phase().thermo().rho())
*p_rghEqnComps[phasei]
);
if (phasei == 0)
{
p_rghEqnComp = hmm;
}
else
{
p_rghEqnComp.ref() += hmm;
}
phasei++;
}
solve
(
p_rghEqnComp
+ p_rghEqnIncomp,
mesh.solver(p_rgh.select(pimple.finalInnerIter()))
);
if (pimple.finalNonOrthogonalIter())
{
phasei = 0;
forAllIter
(
PtrDictionary<phaseModel>,
mixture.phases(),
phase
)
{
phase().dgdt() =
pos(phase())
*(p_rghEqnComps[phasei] & p_rgh)/phase().thermo().rho();
}
phi = phiHbyA + p_rghEqnIncomp.flux();
U = HbyA
+ rAU*fvc::reconstruct((phig + p_rghEqnIncomp.flux())/rAUf);
U.correctBoundaryConditions();
}
}
p = max(p_rgh + mixture.rho()*gh, pMin);
// Update densities from change in p_rgh
mixture.correctRho(p_rgh - p_rgh_0);
rho = mixture.rho();
// Correct p_rgh for consistency with p and the updated densities
p_rgh = p - rho*gh;
p_rgh.correctBoundaryConditions();
K = 0.5*magSqr(U);
Info<< "max(U) " << max(mag(U)).value() << endl;
Info<< "min(p_rgh) " << min(p_rgh).value() << endl;
}
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