pEqn.H

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{
    volScalarField rAUrel(1.0/UrelEqn.A());
    volVectorField HbyA("HbyA", Urel);
    HbyA = rAUrel*UrelEqn.H();
 
    surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));
    adjustPhi(phiHbyA, Urel, p);
 
    tmp<volScalarField> rAtUrel(rAUrel);
 
    if (simple.consistent())
    {
        rAtUrel = 1.0/(1.0/rAUrel - UrelEqn.H1());
        phiHbyA +=
            fvc::interpolate(rAtUrel() - rAUrel)*fvc::snGrad(p)*mesh.magSf();
        HbyA -= (rAUrel - rAtUrel())*fvc::grad(p);
    }
 
    tUrelEqn.clear();
 
    // Update the pressure BCs to ensure flux consistency
    constrainPressure(p, Urel, phiHbyA, rAtUrel());
 
    // Non-orthogonal pressure corrector loop
    while (simple.correctNonOrthogonal())
    {
        fvScalarMatrix pEqn
        (
            fvm::laplacian(rAtUrel(), p) == fvc::div(phiHbyA)
        );
 
        pEqn.setReference(pRefCell, pRefValue);
 
        pEqn.solve();
 
        if (simple.finalNonOrthogonalIter())
        {
            phi = phiHbyA - pEqn.flux();
        }
    }
 
    #include "continuityErrs.H"
 
    // Explicitly relax pressure for momentum corrector
    p.relax();
 
    // Momentum corrector
    Urel = HbyA - rAtUrel()*fvc::grad(p);
    Urel.correctBoundaryConditions();
    fvOptions.correct(Urel);
}