constrainPressure.C

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    Copyright (C) 2016 OpenFOAM Foundation
    Copyright (C) 2021 OpenCFD Ltd.
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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.
 
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    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
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#include "constrainPressure.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "geometricOneField.H"
#include "updateableSnGrad.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class RhoType, class RAUType, class MRFType>
void Foam::constrainPressure
(
    volScalarField& p,
    const RhoType& rho,
    const volVectorField& U,
    const surfaceScalarField& phiHbyA,
    const RAUType& rhorAU,
    const MRFType& MRF
)
{
    const fvMesh& mesh = p.mesh();
 
    volScalarField::Boundary& pBf = p.boundaryFieldRef();
 
    const volVectorField::Boundary& UBf = U.boundaryField();
    const surfaceScalarField::Boundary& phiHbyABf =
        phiHbyA.boundaryField();
    const typename RAUType::Boundary& rhorAUBf = rhorAU.boundaryField();
    const surfaceVectorField::Boundary& SfBf = mesh.Sf().boundaryField();
    const surfaceScalarField::Boundary& magSfBf =
        mesh.magSf().boundaryField();
 
    forAll(pBf, patchi)
    {
        typedef updateablePatchTypes::updateableSnGrad snGradType;
        const auto* snGradPtr = isA<snGradType>(pBf[patchi]);
 
        if (snGradPtr)
        {
            const_cast<snGradType&>(*snGradPtr).updateSnGrad
            (
                (
                    phiHbyABf[patchi]
                  - rho.boundaryField()[patchi]
                   *MRF.relative(SfBf[patchi] & UBf[patchi], patchi)
                )
               /(magSfBf[patchi]*rhorAUBf[patchi])
            );
        }
    }
}
 
 
template<class RAUType>
void Foam::constrainPressure
(
    volScalarField& p,
    const volScalarField& rho,
    const volVectorField& U,
    const surfaceScalarField& phiHbyA,
    const RAUType& rAU
)
{
    constrainPressure(p, rho, U, phiHbyA, rAU, NullMRF());
}
 
 
template<class RAUType, class MRFType>
void Foam::constrainPressure
(
    volScalarField& p,
    const volVectorField& U,
    const surfaceScalarField& phiHbyA,
    const RAUType& rAU,
    const MRFType& MRF
)
{
    constrainPressure(p, geometricOneField(), U, phiHbyA, rAU, MRF);
}
 
 
template<class RAUType>
void Foam::constrainPressure
(
    volScalarField& p,
    const volVectorField& U,
    const surfaceScalarField& phiHbyA,
    const RAUType& rAU
)
{
    constrainPressure(p, U, phiHbyA, rAU, NullMRF());
}
 
 
// ************************************************************************* //