mirror of
https://develop.openfoam.com/Development/openfoam.git
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8170f2ad92
Integration of VOF MULES new interfaces. Update of VOF solvers and all instances of MULES in the code. Integration of reactingTwoPhaseEuler and reactingMultiphaseEuler solvers and sub-models Updating reactingEuler tutorials accordingly (most of them tested) New eRefConst thermo used in tutorials. Some modifications at thermo specie level affecting mostly eThermo. hThermo mostly unaffected New chtMultiRegionTwoPhaseEulerFoam solver for quenching and tutorial. Phases sub-models for reactingTwoPhaseEuler and reactingMultiphaseEuler were moved to src/phaseSystemModels/reactingEulerFoam in order to be used by BC for chtMultiRegionTwoPhaseEulerFoam. Update of interCondensatingEvaporatingFoam solver.
708 lines
16 KiB
C
708 lines
16 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd |
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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| Copyright (C) 2011-2017 OpenFOAM Foundation
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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 "multiphaseMixture.H"
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#include "alphaContactAngleFvPatchScalarField.H"
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#include "Time.H"
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#include "subCycle.H"
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#include "MULES.H"
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#include "surfaceInterpolate.H"
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#include "fvcGrad.H"
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#include "fvcSnGrad.H"
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#include "fvcDiv.H"
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#include "fvcFlux.H"
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#include "unitConversion.H"
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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void Foam::multiphaseMixture::calcAlphas()
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{
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scalar level = 0.0;
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alphas_ == 0.0;
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for (const phase& ph : phases_)
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{
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alphas_ += level * ph;
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level += 1.0;
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::multiphaseMixture::multiphaseMixture
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(
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const volVectorField& U,
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const surfaceScalarField& phi
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)
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:
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IOdictionary
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(
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IOobject
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(
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"transportProperties",
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U.time().constant(),
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U.db(),
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IOobject::MUST_READ_IF_MODIFIED,
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IOobject::NO_WRITE
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)
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),
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phases_(lookup("phases"), phase::iNew(U, phi)),
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mesh_(U.mesh()),
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U_(U),
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phi_(phi),
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rhoPhi_
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(
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IOobject
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(
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"rhoPhi",
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mesh_.time().timeName(),
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mesh_,
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh_,
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dimensionedScalar(dimMass/dimTime, Zero)
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),
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alphas_
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(
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IOobject
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(
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"alphas",
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mesh_.time().timeName(),
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mesh_,
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IOobject::NO_READ,
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IOobject::AUTO_WRITE
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),
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mesh_,
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dimensionedScalar(dimless, Zero)
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),
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nu_
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(
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IOobject
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(
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"nu",
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mesh_.time().timeName(),
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mesh_
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),
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mu()/rho()
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),
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sigmas_(lookup("sigmas")),
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dimSigma_(1, 0, -2, 0, 0),
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deltaN_
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(
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"deltaN",
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1e-8/cbrt(average(mesh_.V()))
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)
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{
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rhoPhi_.setOriented();
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calcAlphas();
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alphas_.write();
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}
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField>
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Foam::multiphaseMixture::rho() const
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{
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auto iter = phases_.cbegin();
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tmp<volScalarField> trho = iter()*iter().rho();
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volScalarField& rho = trho.ref();
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for (++iter; iter != phases_.cend(); ++iter)
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{
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rho += iter()*iter().rho();
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}
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return trho;
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}
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Foam::tmp<Foam::scalarField>
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Foam::multiphaseMixture::rho(const label patchi) const
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{
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auto iter = phases_.cbegin();
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tmp<scalarField> trho = iter().boundaryField()[patchi]*iter().rho().value();
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scalarField& rho = trho.ref();
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for (++iter; iter != phases_.cend(); ++iter)
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{
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rho += iter().boundaryField()[patchi]*iter().rho().value();
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}
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return trho;
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}
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Foam::tmp<Foam::volScalarField>
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Foam::multiphaseMixture::mu() const
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{
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auto iter = phases_.cbegin();
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tmp<volScalarField> tmu = iter()*iter().rho()*iter().nu();
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volScalarField& mu = tmu.ref();
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for (++iter; iter != phases_.cend(); ++iter)
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{
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mu += iter()*iter().rho()*iter().nu();
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}
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return tmu;
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}
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Foam::tmp<Foam::scalarField>
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Foam::multiphaseMixture::mu(const label patchi) const
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{
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auto iter = phases_.cbegin();
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tmp<scalarField> tmu =
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(
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iter().boundaryField()[patchi]
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*iter().rho().value()
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*iter().nu(patchi)
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);
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scalarField& mu = tmu.ref();
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for (++iter; iter != phases_.cend(); ++iter)
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{
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mu +=
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(
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iter().boundaryField()[patchi]
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*iter().rho().value()
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*iter().nu(patchi)
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);
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}
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return tmu;
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}
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Foam::tmp<Foam::surfaceScalarField>
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Foam::multiphaseMixture::muf() const
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{
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auto iter = phases_.cbegin();
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tmp<surfaceScalarField> tmuf =
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fvc::interpolate(iter())*iter().rho()*fvc::interpolate(iter().nu());
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surfaceScalarField& muf = tmuf.ref();
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for (++iter; iter != phases_.cend(); ++iter)
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{
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muf +=
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fvc::interpolate(iter())*iter().rho()*fvc::interpolate(iter().nu());
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}
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return tmuf;
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}
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Foam::tmp<Foam::volScalarField>
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Foam::multiphaseMixture::nu() const
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{
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return nu_;
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}
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Foam::tmp<Foam::scalarField>
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Foam::multiphaseMixture::nu(const label patchi) const
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{
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return nu_.boundaryField()[patchi];
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}
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Foam::tmp<Foam::surfaceScalarField>
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Foam::multiphaseMixture::nuf() const
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{
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return muf()/fvc::interpolate(rho());
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}
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Foam::tmp<Foam::surfaceScalarField>
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Foam::multiphaseMixture::surfaceTensionForce() const
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{
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tmp<surfaceScalarField> tstf
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(
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new surfaceScalarField
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(
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IOobject
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(
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"surfaceTensionForce",
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mesh_.time().timeName(),
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mesh_
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),
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mesh_,
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dimensionedScalar(dimensionSet(1, -2, -2, 0, 0), Zero)
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)
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);
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surfaceScalarField& stf = tstf.ref();
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stf.setOriented();
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forAllConstIters(phases_, iter1)
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{
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const phase& alpha1 = iter1();
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auto iter2 = iter1;
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for (++iter2; iter2 != phases_.cend(); ++iter2)
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{
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const phase& alpha2 = iter2();
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auto sigma = sigmas_.cfind(interfacePair(alpha1, alpha2));
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if (!sigma.found())
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{
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FatalErrorInFunction
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<< "Cannot find interface " << interfacePair(alpha1, alpha2)
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<< " in list of sigma values"
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<< exit(FatalError);
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}
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stf += dimensionedScalar("sigma", dimSigma_, *sigma)
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*fvc::interpolate(K(alpha1, alpha2))*
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(
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fvc::interpolate(alpha2)*fvc::snGrad(alpha1)
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- fvc::interpolate(alpha1)*fvc::snGrad(alpha2)
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);
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}
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}
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return tstf;
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}
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void Foam::multiphaseMixture::solve()
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{
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correct();
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const Time& runTime = mesh_.time();
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volScalarField& alpha = phases_.first();
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const dictionary& alphaControls = mesh_.solverDict("alpha");
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label nAlphaSubCycles(alphaControls.get<label>("nAlphaSubCycles"));
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scalar cAlpha(alphaControls.get<scalar>("cAlpha"));
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if (nAlphaSubCycles > 1)
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{
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surfaceScalarField rhoPhiSum
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(
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IOobject
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(
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"rhoPhiSum",
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runTime.timeName(),
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mesh_
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),
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mesh_,
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dimensionedScalar(rhoPhi_.dimensions(), Zero)
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);
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dimensionedScalar totalDeltaT = runTime.deltaT();
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for
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(
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subCycle<volScalarField> alphaSubCycle(alpha, nAlphaSubCycles);
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!(++alphaSubCycle).end();
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)
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{
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solveAlphas(cAlpha);
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rhoPhiSum += (runTime.deltaT()/totalDeltaT)*rhoPhi_;
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}
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rhoPhi_ = rhoPhiSum;
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}
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else
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{
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solveAlphas(cAlpha);
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}
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// Update the mixture kinematic viscosity
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nu_ = mu()/rho();
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}
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void Foam::multiphaseMixture::correct()
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{
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for (phase& ph : phases_)
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{
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ph.correct();
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}
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}
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Foam::tmp<Foam::surfaceVectorField> Foam::multiphaseMixture::nHatfv
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(
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const volScalarField& alpha1,
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const volScalarField& alpha2
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) const
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{
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/*
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// Cell gradient of alpha
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volVectorField gradAlpha =
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alpha2*fvc::grad(alpha1) - alpha1*fvc::grad(alpha2);
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// Interpolated face-gradient of alpha
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surfaceVectorField gradAlphaf = fvc::interpolate(gradAlpha);
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*/
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surfaceVectorField gradAlphaf
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(
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fvc::interpolate(alpha2)*fvc::interpolate(fvc::grad(alpha1))
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- fvc::interpolate(alpha1)*fvc::interpolate(fvc::grad(alpha2))
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);
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// Face unit interface normal
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return gradAlphaf/(mag(gradAlphaf) + deltaN_);
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}
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Foam::tmp<Foam::surfaceScalarField> Foam::multiphaseMixture::nHatf
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(
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const volScalarField& alpha1,
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const volScalarField& alpha2
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) const
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{
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// Face unit interface normal flux
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return nHatfv(alpha1, alpha2) & mesh_.Sf();
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}
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// Correction for the boundary condition on the unit normal nHat on
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// walls to produce the correct contact angle.
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// The dynamic contact angle is calculated from the component of the
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// velocity on the direction of the interface, parallel to the wall.
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void Foam::multiphaseMixture::correctContactAngle
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(
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const phase& alpha1,
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const phase& alpha2,
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surfaceVectorField::Boundary& nHatb
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) const
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{
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const volScalarField::Boundary& gbf
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= alpha1.boundaryField();
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const fvBoundaryMesh& boundary = mesh_.boundary();
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forAll(boundary, patchi)
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{
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if (isA<alphaContactAngleFvPatchScalarField>(gbf[patchi]))
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{
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const alphaContactAngleFvPatchScalarField& acap =
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refCast<const alphaContactAngleFvPatchScalarField>(gbf[patchi]);
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vectorField& nHatPatch = nHatb[patchi];
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vectorField AfHatPatch
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(
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mesh_.Sf().boundaryField()[patchi]
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/mesh_.magSf().boundaryField()[patchi]
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);
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const auto tp =
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acap.thetaProps().cfind(interfacePair(alpha1, alpha2));
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if (!tp.found())
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{
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FatalErrorInFunction
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<< "Cannot find interface " << interfacePair(alpha1, alpha2)
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<< "\n in table of theta properties for patch "
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<< acap.patch().name()
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<< exit(FatalError);
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}
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const bool matched = (tp.key().first() == alpha1.name());
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const scalar theta0 = degToRad(tp().theta0(matched));
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scalarField theta(boundary[patchi].size(), theta0);
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const scalar uTheta = tp().uTheta();
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// Calculate the dynamic contact angle if required
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if (uTheta > SMALL)
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{
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const scalar thetaA = degToRad(tp().thetaA(matched));
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const scalar thetaR = degToRad(tp().thetaR(matched));
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// Calculated the component of the velocity parallel to the wall
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vectorField Uwall
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(
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U_.boundaryField()[patchi].patchInternalField()
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- U_.boundaryField()[patchi]
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);
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Uwall -= (AfHatPatch & Uwall)*AfHatPatch;
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// Find the direction of the interface parallel to the wall
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vectorField nWall
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(
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nHatPatch - (AfHatPatch & nHatPatch)*AfHatPatch
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);
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// Normalise nWall
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nWall /= (mag(nWall) + SMALL);
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// Calculate Uwall resolved normal to the interface parallel to
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// the interface
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scalarField uwall(nWall & Uwall);
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theta += (thetaA - thetaR)*tanh(uwall/uTheta);
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}
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// Reset nHatPatch to correspond to the contact angle
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scalarField a12(nHatPatch & AfHatPatch);
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scalarField b1(cos(theta));
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scalarField b2(nHatPatch.size());
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forAll(b2, facei)
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{
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b2[facei] = cos(acos(a12[facei]) - theta[facei]);
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}
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scalarField det(1.0 - a12*a12);
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scalarField a((b1 - a12*b2)/det);
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scalarField b((b2 - a12*b1)/det);
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nHatPatch = a*AfHatPatch + b*nHatPatch;
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nHatPatch /= (mag(nHatPatch) + deltaN_.value());
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}
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}
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}
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Foam::tmp<Foam::volScalarField> Foam::multiphaseMixture::K
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(
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const phase& alpha1,
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const phase& alpha2
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) const
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{
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tmp<surfaceVectorField> tnHatfv = nHatfv(alpha1, alpha2);
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correctContactAngle(alpha1, alpha2, tnHatfv.ref().boundaryFieldRef());
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// Simple expression for curvature
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return -fvc::div(tnHatfv & mesh_.Sf());
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}
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Foam::tmp<Foam::volScalarField>
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Foam::multiphaseMixture::nearInterface() const
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{
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tmp<volScalarField> tnearInt
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(
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new volScalarField
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(
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IOobject
|
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(
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"nearInterface",
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mesh_.time().timeName(),
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mesh_
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),
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mesh_,
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dimensionedScalar(dimless, Zero)
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)
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);
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for (const phase& ph : phases_)
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{
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tnearInt.ref() = max(tnearInt(), pos0(ph - 0.01)*pos0(0.99 - ph));
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}
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return tnearInt;
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}
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|
|
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void Foam::multiphaseMixture::solveAlphas
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(
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const scalar cAlpha
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)
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|
{
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static label nSolves(-1);
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++nSolves;
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const word alphaScheme("div(phi,alpha)");
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const word alpharScheme("div(phirb,alpha)");
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surfaceScalarField phic(mag(phi_/mesh_.magSf()));
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phic = min(cAlpha*phic, max(phic));
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PtrList<surfaceScalarField> alphaPhiCorrs(phases_.size());
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int phasei = 0;
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for (phase& alpha : phases_)
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{
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alphaPhiCorrs.set
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(
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phasei,
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new surfaceScalarField
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|
(
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"phi" + alpha.name() + "Corr",
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fvc::flux
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|
(
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phi_,
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alpha,
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alphaScheme
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)
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)
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);
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surfaceScalarField& alphaPhiCorr = alphaPhiCorrs[phasei];
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for (phase& alpha2 : phases_)
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{
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if (&alpha2 == &alpha) continue;
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|
|
|
surfaceScalarField phir(phic*nHatf(alpha, alpha2));
|
|
|
|
alphaPhiCorr += fvc::flux
|
|
(
|
|
-fvc::flux(-phir, alpha2, alpharScheme),
|
|
alpha,
|
|
alpharScheme
|
|
);
|
|
}
|
|
|
|
MULES::limit
|
|
(
|
|
1.0/mesh_.time().deltaT().value(),
|
|
geometricOneField(),
|
|
alpha,
|
|
phi_,
|
|
alphaPhiCorr,
|
|
zeroField(),
|
|
zeroField(),
|
|
oneField(),
|
|
zeroField(),
|
|
true
|
|
);
|
|
|
|
++phasei;
|
|
}
|
|
|
|
MULES::limitSum(alphaPhiCorrs);
|
|
|
|
rhoPhi_ = dimensionedScalar(dimMass/dimTime, Zero);
|
|
|
|
volScalarField sumAlpha
|
|
(
|
|
IOobject
|
|
(
|
|
"sumAlpha",
|
|
mesh_.time().timeName(),
|
|
mesh_
|
|
),
|
|
mesh_,
|
|
dimensionedScalar(dimless, Zero)
|
|
);
|
|
|
|
phasei = 0;
|
|
|
|
for (phase& alpha : phases_)
|
|
{
|
|
surfaceScalarField& alphaPhi = alphaPhiCorrs[phasei];
|
|
alphaPhi += upwind<scalar>(mesh_, phi_).flux(alpha);
|
|
|
|
MULES::explicitSolve
|
|
(
|
|
geometricOneField(),
|
|
alpha,
|
|
alphaPhi
|
|
);
|
|
|
|
rhoPhi_ += alphaPhi*alpha.rho();
|
|
|
|
Info<< alpha.name() << " volume fraction, min, max = "
|
|
<< alpha.weightedAverage(mesh_.V()).value()
|
|
<< ' ' << min(alpha).value()
|
|
<< ' ' << max(alpha).value()
|
|
<< endl;
|
|
|
|
sumAlpha += alpha;
|
|
|
|
++phasei;
|
|
}
|
|
|
|
Info<< "Phase-sum volume fraction, min, max = "
|
|
<< sumAlpha.weightedAverage(mesh_.V()).value()
|
|
<< ' ' << min(sumAlpha).value()
|
|
<< ' ' << max(sumAlpha).value()
|
|
<< endl;
|
|
|
|
// Correct the sum of the phase-fractions to avoid 'drift'
|
|
volScalarField sumCorr(1.0 - sumAlpha);
|
|
for (phase& alpha : phases_)
|
|
{
|
|
alpha += alpha*sumCorr;
|
|
}
|
|
|
|
calcAlphas();
|
|
}
|
|
|
|
|
|
bool Foam::multiphaseMixture::read()
|
|
{
|
|
if (transportModel::read())
|
|
{
|
|
bool readOK = true;
|
|
|
|
PtrList<entry> phaseData(lookup("phases"));
|
|
label phasei = 0;
|
|
|
|
for (phase& ph : phases_)
|
|
{
|
|
readOK &= ph.read(phaseData[phasei++].dict());
|
|
}
|
|
|
|
readEntry("sigmas", sigmas_);
|
|
|
|
return readOK;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|