OpenFOAM-dev / data /applications /modules /multiphaseVoFSolver /multiphaseVoFMixture /multiphaseVoFMixture.C
| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2023-2026 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. | |
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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 | |
| along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| defineTypeNameAndDebug(multiphaseVoFMixture, 0); | |
| } | |
| // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * // | |
| void Foam::multiphaseVoFMixture::calcAlphas() | |
| { | |
| scalar level = 0.0; | |
| alphas_ == 0.0; | |
| forAll(phases_, phasei) | |
| { | |
| alphas_ += level*phases_[phasei].alpha(); | |
| level += 1.0; | |
| } | |
| } | |
| // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * // | |
| Foam::multiphaseVoFMixture::multiphaseVoFMixture | |
| ( | |
| const fvMesh& mesh, | |
| const VoFphase::iNew& inew | |
| ) | |
| : | |
| VoFMixture(mesh), | |
| IOdictionary | |
| ( | |
| IOobject | |
| ( | |
| "phaseProperties", | |
| mesh.time().constant(), | |
| mesh, | |
| IOobject::MUST_READ_IF_MODIFIED, | |
| IOobject::NO_WRITE | |
| ) | |
| ), | |
| phases_(lookup("phases"), inew), | |
| mesh_(mesh), | |
| alphas_ | |
| ( | |
| IOobject | |
| ( | |
| "alphas", | |
| mesh_.time().name(), | |
| mesh_, | |
| IOobject::NO_READ, | |
| IOobject::AUTO_WRITE | |
| ), | |
| mesh_, | |
| dimensionedScalar(dimless, 0) | |
| ), | |
| sigmas_(lookup("sigmas")), | |
| dimSigma_(1, 0, -2, 0, 0), | |
| deltaN_ | |
| ( | |
| "deltaN", | |
| 1e-8/pow(average(mesh_.V()), 1.0/3.0) | |
| ) | |
| { | |
| calcAlphas(); | |
| alphas_.write(); | |
| } | |
| // * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * // | |
| Foam::tmp<Foam::surfaceScalarField> | |
| Foam::multiphaseVoFMixture::surfaceTensionForce(const volVectorField& U) const | |
| { | |
| tmp<surfaceScalarField> tstf | |
| ( | |
| surfaceScalarField::New | |
| ( | |
| "surfaceTensionForce", | |
| mesh_, | |
| dimensionedScalar(dimensionSet(1, -2, -2, 0, 0), 0) | |
| ) | |
| ); | |
| surfaceScalarField& stf = tstf.ref(); | |
| forAll(phases_, phasei) | |
| { | |
| const VoFphase& alpha1 = phases_[phasei]; | |
| for (label phasej = phasei+1; phasej<phases_.size(); phasej++) | |
| { | |
| const VoFphase& alpha2 = phases_[phasej]; | |
| sigmaTable::const_iterator sigma = | |
| sigmas_.find(interfacePair(alpha1, alpha2)); | |
| if (sigma == sigmas_.end()) | |
| { | |
| FatalErrorInFunction | |
| << "Cannot find interface " << interfacePair(alpha1, alpha2) | |
| << " in list of sigma values" | |
| << exit(FatalError); | |
| } | |
| stf += dimensionedScalar(dimSigma_, sigma()) | |
| *fvc::interpolate(K(alpha1, alpha2, U))* | |
| ( | |
| fvc::interpolate(alpha2)*fvc::snGrad(alpha1) | |
| - fvc::interpolate(alpha1)*fvc::snGrad(alpha2) | |
| ); | |
| } | |
| } | |
| return tstf; | |
| } | |
| Foam::tmp<Foam::surfaceVectorField> Foam::multiphaseVoFMixture::nHatfv | |
| ( | |
| const volScalarField& alpha1, | |
| const volScalarField& alpha2 | |
| ) const | |
| { | |
| /* | |
| // Cell gradient of alpha | |
| volVectorField gradAlpha = | |
| alpha2*fvc::grad(alpha1) - alpha1*fvc::grad(alpha2); | |
| // Interpolated face-gradient of alpha | |
| surfaceVectorField gradAlphaf = fvc::interpolate(gradAlpha); | |
| */ | |
| surfaceVectorField gradAlphaf | |
| ( | |
| fvc::interpolate(alpha2)*fvc::interpolate(fvc::grad(alpha1)) | |
| - fvc::interpolate(alpha1)*fvc::interpolate(fvc::grad(alpha2)) | |
| ); | |
| // Face unit interface normal | |
| return gradAlphaf/(mag(gradAlphaf) + deltaN_); | |
| } | |
| Foam::tmp<Foam::surfaceScalarField> Foam::multiphaseVoFMixture::nHatf | |
| ( | |
| const volScalarField& alpha1, | |
| const volScalarField& alpha2 | |
| ) const | |
| { | |
| // Face unit interface normal flux | |
| return nHatfv(alpha1, alpha2) & mesh_.Sf(); | |
| } | |
| Foam::tmp<Foam::volScalarField> Foam::multiphaseVoFMixture::K | |
| ( | |
| const VoFphase& alpha1, | |
| const VoFphase& alpha2, | |
| const volVectorField& U | |
| ) const | |
| { | |
| tmp<surfaceVectorField> tnHatfv = nHatfv(alpha1, alpha2); | |
| correctContactAngle | |
| ( | |
| alpha1, | |
| alpha2, | |
| U.boundaryField(), | |
| deltaN_, | |
| tnHatfv.ref().boundaryFieldRef() | |
| ); | |
| // Simple expression for curvature | |
| return -fvc::div(tnHatfv & mesh_.Sf()); | |
| } | |
| Foam::tmp<Foam::volScalarField> | |
| Foam::multiphaseVoFMixture::nearInterface() const | |
| { | |
| tmp<volScalarField> tnearInt | |
| ( | |
| volScalarField::New | |
| ( | |
| "nearInterface", | |
| mesh_, | |
| dimensionedScalar(dimless, 0) | |
| ) | |
| ); | |
| forAll(phases_, phasei) | |
| { | |
| tnearInt.ref() = max | |
| ( | |
| tnearInt(), | |
| pos0(phases_[phasei].alpha() - 0.01) | |
| *pos0(0.99 - phases_[phasei].alpha()) | |
| ); | |
| } | |
| return tnearInt; | |
| } | |
| bool Foam::multiphaseVoFMixture::read() | |
| { | |
| if (regIOobject::read()) | |
| { | |
| lookup("sigmas") >> sigmas_; | |
| return true; | |
| } | |
| else | |
| { | |
| return false; | |
| } | |
| } | |
| // ************************************************************************* // | |