pEqn.H

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volScalarField rAU(1.0/UEqn.A());
volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p));

surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));

if (pimple.ddtCorr())
{
    phiHbyA += MRF.zeroFilter(fvc::interpolate(rAU)*fvc::ddtCorr(U, phi, Uf));
}

MRF.makeRelative(phiHbyA);

if (p.needReference())
{
    fvc::makeRelative(phiHbyA, U);
    adjustPhi(phiHbyA, U, p);
    fvc::makeAbsolute(phiHbyA, U);
}


// Update the pressure BCs to ensure flux consistency
constrainPressure(p, U, phiHbyA, rAU, MRF);

// Non-orthogonal pressure corrector loop
while (pimple.correctNonOrthogonal())
{
    fvScalarMatrix pEqn
    (
        fvm::laplacian(rAU, p)
     ==
        fvc::div(phiHbyA)
    );

    pEqn.setReference(pRefCell, pRefValue);

    pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));

    if (pimple.finalNonOrthogonalIter())
    {
        phi = phiHbyA - pEqn.flux();
    }
}

#include "continuityErrs.H"

p.relax();

U = HbyA - rAU*fvc::grad(p);
U.correctBoundaryConditions();
fvOptions.correct(U);

// Correct rhoUf if the mesh is moving
fvc::correctUf(Uf, U, phi);

// Make the fluxes relative to the mesh motion
fvc::makeRelative(phi, U);