06e29c44ab
Support for mesh sub-cycling has been removed from Lagrangian. Various Lagrangian processes already support sub-dividing the time-step. It is easier and more efficient to extend that support all the way to the high-level cloud objects, rather than to sub-cycle the mesh. This has additional benefits. The cloud now no longer needs to reset the step fraction at the start of every sub-motion. Injection can take advantage of this by modifying particles' step fractions in order to distribute them uniformly through the time-step. This is a simple and efficient method. Previously, injection would track the particles some distance after injection. This was more expensive to do, it resulted in spatial artefacts in the injected Lagrangian field, and it did not correctly handle interactions with patches or parallel transfers. The lack of injection tracking also means that particles injected through patches now start their simulation topologically connected to the face on which they are created. This means that they correctly trigger cloud functions associated with that face and/or patch. The injection models now also return barycentric coordinates directly, rather than the global position of injected particles. For methods that initially generate locations naturally in terms of barycentric coordinates, this prevents unnecessary and potentially fragile conversion from barycentric to Cartesian and back again. These are typically the methods that "fill" some sort of space; e.g., patch or cell-zone injections.
92 lines
2.9 KiB
C++
92 lines
2.9 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) 2011-2022 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 "solidParticleCloud.H"
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#include "fvMesh.H"
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#include "volFields.H"
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#include "interpolationCellPoint.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(solidParticleCloud, 0);
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::solidParticleCloud::solidParticleCloud
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(
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const fvMesh& mesh,
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const word& cloudName,
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bool readFields
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)
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:
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Cloud<solidParticle>(mesh, cloudName, false),
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mesh_(mesh),
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particleProperties_
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(
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IOobject
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(
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"particleProperties",
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mesh_.time().constant(),
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mesh_,
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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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rhop_(dimensionedScalar(particleProperties_.lookup("rhop")).value()),
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e_(dimensionedScalar(particleProperties_.lookup("e")).value()),
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mu_(dimensionedScalar(particleProperties_.lookup("mu")).value())
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{
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if (readFields)
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{
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solidParticle::readFields(*this);
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}
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}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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void Foam::solidParticleCloud::move(const dimensionedVector& g)
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{
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const volScalarField& rho = mesh_.lookupObject<const volScalarField>("rho");
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const volVectorField& U = mesh_.lookupObject<const volVectorField>("U");
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const volScalarField& nu = mesh_.lookupObject<const volScalarField>("nu");
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interpolationCellPoint<scalar> rhoInterp(rho);
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interpolationCellPoint<vector> UInterp(U);
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interpolationCellPoint<scalar> nuInterp(nu);
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solidParticle::trackingData
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td(*this, rhoInterp, UInterp, nuInterp, g.value());
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Cloud<solidParticle>::move(*this, td);
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}
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// ************************************************************************* //
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