pEqn.H

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rho = thermo.rho();

// Thermodynamic density needs to be updated by psi*d(p) after the
// pressure solution
const volScalarField psip0(psi*p);

volScalarField rAU(1.0/UEqn.A());
surfaceScalarField rhorAUf("rhorAUf", fvc::interpolate(rho*rAU));
volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p));
surfaceScalarField phiHbyA
(
    "phiHbyA",
    (
        fvc::flux(rho*HbyA)
      + rhorAUf*fvc::ddtCorr(rho, U, phi)
    )
);

MRF.makeRelative(fvc::interpolate(rho), phiHbyA);

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

fvScalarMatrix pDDtEqn
(
    fvc::ddt(rho) + psi*correction(fvm::ddt(p))
  + fvc::div(phiHbyA)
 ==
    parcels.Srho()
  + fvOptions(psi, p, rho.name())
);

while (pimple.correctNonOrthogonal())
{
    fvScalarMatrix pEqn
    (
        pDDtEqn
      - fvm::laplacian(rhorAUf, p)
    );

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

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

p.relax();

// Thermodynamic density update
thermo.correctRho(psi*p - psip0);

#include "rhoEqn.H" // NOTE: flux and time scales now inconsistent
#include "compressibleContinuityErrs.H"

U = HbyA - rAU*fvc::grad(p);
U.correctBoundaryConditions();
fvOptions.correct(U);
K = 0.5*magSqr(U);

if (thermo.dpdt())
{
    dpdt = fvc::ddt(p);
}

rho = thermo.rho();
rho = max(rho, rhoMin);
rho = min(rho, rhoMax);

Info<< "p min/max = " << min(p).value() << ", " << max(p).value() << endl;