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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2021-2026 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "hydrostaticInitialisation.H"
#include "fluidThermo.H"
#include "fvmLaplacian.H"
#include "fviDiv.H"
#include "fvcSnGrad.H"
#include "surfaceInterpolate.H"
#include "constrainPressure.H"
#include "uniformDimensionedFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
void Foam::hydrostaticInitialisation
(
volScalarField& p_rgh,
volScalarField& p,
volScalarField& rho,
const volVectorField& U,
const volScalarField& gh,
const surfaceScalarField& ghf,
const uniformDimensionedScalarField& pRef,
fluidThermo& thermo,
const dictionary& dict
)
{
if (dict.lookupOrDefault<bool>("hydrostaticInitialisation", false))
{
const fvMesh& mesh = p_rgh.mesh();
volScalarField& ph_rgh = regIOobject::store
(
new volScalarField
(
IOobject
(
"ph_rgh",
"0",
mesh,
IOobject::MUST_READ,
IOobject::NO_WRITE
),
mesh,
dimensions::pressure
)
);
if (!mesh.time().restart())
{
p = ph_rgh + rho*gh + pRef;
thermo.correct();
rho = thermo.rho();
label nCorr
(
dict.lookupOrDefault<label>("nHydrostaticCorrectors", 5)
);
for (label i=0; i<nCorr; i++)
{
surfaceScalarField rhof("rhof", fvc::interpolate(rho));
surfaceScalarField phig
(
"phig",
-rhof*ghf*fvc::snGrad(rho)*mesh.magSf()
);
// Update the pressure BCs to ensure flux consistency
constrainPressure(ph_rgh, rho, U, phig, rhof);
fvScalarMatrix ph_rghEqn
(
fvm::laplacian(rhof, ph_rgh) == fvi::div(phig)
);
ph_rghEqn.solve();
p = ph_rgh + rho*gh + pRef;
thermo.correct();
rho = thermo.rho();
Info<< "Hydrostatic pressure variation "
<< (max(ph_rgh) - min(ph_rgh)).value() << endl;
}
ph_rgh.write();
p_rgh = ph_rgh;
}
}
else
{
// Force p_rgh to be consistent with p
p_rgh = p - rho*gh - pRef;
}
}
// ************************************************************************* //
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