pEqn.H

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{
    volScalarField rUA = 1.0/UEqn.A();
    surfaceScalarField rUAf = fvc::interpolate(rUA);

    U = rUA*UEqn.H();

    surfaceScalarField phiU
    (
        "phiU",
        (fvc::interpolate(U) & mesh.Sf())
      + fvc::ddtPhiCorr(rUA, rho, U, phi)
    );

    adjustPhi(phiU, U, p_rgh);

    phi = phiU +
        (
            fvc::interpolate(interface.sigmaK())*fvc::snGrad(alpha1)
          - ghf*fvc::snGrad(rho)
        )*rUAf*mesh.magSf();

    Pair<tmp<volScalarField> > vDotP = twoPhaseProperties->vDotP();
    const volScalarField& vDotcP = vDotP[0]();
    const volScalarField& vDotvP = vDotP[1]();

    for(int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
    {
        fvScalarMatrix p_rghEqn
        (
            fvc::div(phi) - fvm::laplacian(rUAf, p_rgh)
          - (vDotvP - vDotcP)*(pSat - rho*gh) + fvm::Sp(vDotvP - vDotcP, p_rgh)
        );

        p_rghEqn.setReference(pRefCell, pRefValue);

        p_rghEqn.solve
        (
            mesh.solver
            (
                p_rgh.select
                (
                    finalIter
                 && corr == nCorr-1
                 && nonOrth == nNonOrthCorr
                )
            )
        );

        if (nonOrth == nNonOrthCorr)
        {
            phi += p_rghEqn.flux();
        }
    }

    U += rUA*fvc::reconstruct((phi - phiU)/rUAf);
    U.correctBoundaryConditions();

    #include <finiteVolume/continuityErrs.H>

    p == p_rgh + rho*gh;

    if (p_rgh.needReference())
    {
        p += dimensionedScalar
        (
            "p",
            p.dimensions(),
            pRefValue - getRefCellValue(p, pRefCell)
        );
        p_rgh = p - rho*gh;
    }
}

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