165 lines
4.6 KiB
C++
165 lines
4.6 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration | Website: https://openfoam.org
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\\ / A nd | Copyright (C) 2014-2024 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "segregated.H"
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#include "fvcGrad.H"
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#include "surfaceInterpolate.H"
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#include "zeroGradientFvPatchFields.H"
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#include "addToRunTimeSelectionTable.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace dragModels
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{
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defineTypeNameAndDebug(segregated, 0);
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addToRunTimeSelectionTable(dragModel, segregated, dictionary);
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::dragModels::segregated::segregated
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(
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const dictionary& dict,
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const phaseInterface& interface,
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const bool registerObject
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)
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:
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dragModel(dict, interface, registerObject),
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interface_(interface.modelCast<dragModel, segregatedPhaseInterface>()),
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m_("m", dimless, dict),
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n_("n", dimless, dict)
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{}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::dragModels::segregated::~segregated()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField> Foam::dragModels::segregated::K() const
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{
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const fvMesh& mesh(interface_.phase1().mesh());
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const volScalarField& alpha1(interface_.phase1());
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const volScalarField& alpha2(interface_.phase2());
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const volScalarField::Internal& rho1(interface_.phase1().rho());
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const volScalarField::Internal& rho2(interface_.phase2().rho());
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tmp<volScalarField> tnu1(interface_.phase1().fluidThermo().nu());
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tmp<volScalarField> tnu2(interface_.phase2().fluidThermo().nu());
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const volScalarField::Internal& nu1(tnu1());
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const volScalarField::Internal& nu2(tnu2());
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const volScalarField::Internal L(cbrt(mesh.V()));
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const dimensionedScalar residualAlpha
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(
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(
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interface_.phase1().residualAlpha()
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+ interface_.phase2().residualAlpha()
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)/2
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);
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const volScalarField I1
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(
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alpha1/max(alpha1 + alpha2, residualAlpha)
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);
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const volScalarField I2
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(
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alpha2/max(alpha1 + alpha2, residualAlpha)
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);
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const volScalarField::Internal magGradI
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(
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max
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(
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(
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rho2*mag(fvc::grad(I1)()())
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+ rho1*mag(fvc::grad(I2)()())
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)/(rho1 + rho2),
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residualAlpha/2/L
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)
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);
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const volScalarField::Internal muI(rho1*nu1*rho2*nu2/(rho1*nu1 + rho2*nu2));
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const volScalarField::Internal limitedAlpha1
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(
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max(alpha1, interface_.phase1().residualAlpha())
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);
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const volScalarField::Internal limitedAlpha2
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(
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max(alpha2, interface_.phase2().residualAlpha())
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);
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const volScalarField::Internal muAlphaI
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(
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limitedAlpha1*rho1*nu1*limitedAlpha2*rho2*nu2
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/(limitedAlpha1*rho1*nu1 + limitedAlpha2*rho2*nu2)
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);
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const volScalarField::Internal ReI
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(
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(interface_.rho()()*interface_.magUr()()())
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/(magGradI*limitedAlpha1*limitedAlpha2*muI)
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);
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const volScalarField::Internal lambda(m_*ReI + n_*muAlphaI/muI);
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tmp<volScalarField> tK
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(
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volScalarField::New
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(
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"K",
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mesh,
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dimensionedScalar(dimK, 0),
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zeroGradientFvPatchField<scalar>::typeName
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)
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);
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tK.ref().internalFieldRef() = lambda*sqr(magGradI)*muI;
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tK.ref().correctBoundaryConditions();
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return tK;
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}
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Foam::tmp<Foam::surfaceScalarField> Foam::dragModels::segregated::Kf() const
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{
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return fvc::interpolate(K());
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}
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// ************************************************************************* //
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