pEqn.H

/*---------------------------------------------------------------------------*\
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 * In real Time Highly Advanced Computational Applications for Finite Volumes
 * Copyright (C) 2017 by the ITHACA-FV authors
-------------------------------------------------------------------------------
  License
  This file is part of ITHACA-FV
  ITHACA-FV is free software: you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  ITHACA-FV is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  GNU Lesser General Public License for more details.
  You should have received a copy of the GNU Lesser General Public License
  along with ITHACA-FV. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
{
    volScalarField rAU(1.0 / UEqn.A());
    volVectorField HbyA(constrainHbyA(rAU * UEqn.H(), U, p));
    surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));
    MRF.makeRelative(phiHbyA);
    adjustPhi(phiHbyA, U, p);
 
    tmp<volScalarField> rAtU(rAU);
 
    if (simple.consistent())
    {
        rAtU = 1.0 / (1.0 / rAU - UEqn.H1());
        phiHbyA +=
        fvc::interpolate(rAtU() - rAU) * fvc::snGrad(p) * mesh.magSf();
        HbyA -= (rAU - rAtU()) * fvc::grad(p);
    }
 
    tUEqn.clear();
 
    // Update the pressure BCs to ensure flux consistency
    constrainPressure(p, U, phiHbyA, rAtU(), MRF);
    label i = 0;
    // Non-orthogonal pressure corrector loop
    while (simple.correctNonOrthogonal())
    {
        fvScalarMatrix pEqn
        (
            fvm::laplacian(rAtU(), p) == fvc::div(phiHbyA)
        );
        pEqn.setReference(pRefCell, pRefValue);
 
        if (i == 0)
        {
            presidual = pEqn.solve().initialResidual();
        }
        else
        {
            pEqn.solve().initialResidual();
        }
 
        if (simple.finalNonOrthogonalIter())
        {
            phi = phiHbyA - pEqn.flux();
        }
 
        i++;
    }
 
#include "continuityErrs.H"
 
    // Explicitly relax pressure for momentum corrector
    p.relax();
 
    // Momentum corrector
    U = HbyA - rAtU() * fvc::grad(p);
    U.correctBoundaryConditions();
    fvOptions.correct(U);
}