19c3e0cb84
The concept of cell and face inflation proved unworkable in general and has been replaced by the more flexible and robust cell-splitting combined with conservative interpolative mapping and mesh morphing as appropriate.
314 lines
8.6 KiB
C++
314 lines
8.6 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) 2013-2024 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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Application
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Test-fieldMapping
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Description
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Test app for mapping of fields.
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "timeSelector.H"
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#include "fvMesh.H"
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#include "volFields.H"
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#include "Time.H"
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#include "OFstream.H"
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#include "meshTools.H"
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#include "removeFaces.H"
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#include "polyTopoChangeMap.H"
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#include "polyTopoChange.H"
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#include "fvcDiv.H"
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#include "zeroGradientFvPatchFields.H"
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#include "Random.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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bool notEqual(const scalar s1, const scalar s2, const scalar tol)
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{
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return mag(s1-s2) > tol;
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}
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// Main program:
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int main(int argc, char *argv[])
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{
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timeSelector::addOptions();
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#include "setRootCase.H"
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#include "createTime.H"
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timeSelector::select0(runTime, args);
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#include "createMesh.H"
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Random rndGen(0);
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// Test mapping
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// ------------
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// Mapping is volume averaged
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// 1. uniform field stays uniform
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volScalarField one
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(
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IOobject
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(
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"one",
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runTime.name(),
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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, 1.0),
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zeroGradientFvPatchScalarField::typeName
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);
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Info<< "Writing one field "
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<< one.name() << " in " << runTime.name() << endl;
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one.write();
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// 2. linear profile gets preserved
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volScalarField ccX
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(
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IOobject
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(
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"ccX",
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runTime.name(),
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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.C().component(0)
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);
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Info<< "Writing x component of cell centres to "
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<< ccX.name()
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<< " in " << runTime.name() << endl;
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ccX.write();
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// Uniform surface field
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surfaceScalarField surfaceOne
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(
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IOobject
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(
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"surfaceOne",
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runTime.name(),
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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, 1.0),
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calculatedFvsPatchScalarField::typeName
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);
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Info<< "Writing surface one field "
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<< surfaceOne.name() << " in " << runTime.name() << endl;
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surfaceOne.write();
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// Force allocation of V. Important for any mesh changes since otherwise
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// old time volumes are not stored
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const scalar totalVol = gSum(mesh.V());
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// Face removal engine. No checking for not merging boundary faces.
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removeFaces faceRemover(mesh, great);
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while (runTime.loop())
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{
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Info<< "Time = " << runTime.userTimeName() << nl << endl;
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if (!mesh.nInternalFaces())
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{
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break;
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}
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// Remove face
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label candidateFacei = rndGen.sampleAB<label>(0, mesh.nInternalFaces());
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Info<< "Wanting to delete face " << mesh.faceCentres()[candidateFacei]
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<< nl << endl;
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labelList candidates(1, candidateFacei);
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// Get compatible set of faces and connected sets of cells.
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labelList cellRegion;
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labelList cellRegionMaster;
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labelList facesToRemove;
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faceRemover.compatibleRemoves
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(
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candidates,
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cellRegion,
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cellRegionMaster,
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facesToRemove
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);
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// Topo changes container
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polyTopoChange meshMod(mesh);
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// Insert mesh refinement into polyTopoChange.
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faceRemover.setRefinement
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(
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facesToRemove,
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cellRegion,
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cellRegionMaster,
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meshMod
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);
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// Change mesh
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Info<< "Actually changing mesh" << nl << endl;
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autoPtr<polyTopoChangeMap> map = meshMod.changeMesh(mesh);
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Info<< "Mapping fields" << nl << endl;
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mesh.topoChange(map);
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// Update numbering of cells/vertices.
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faceRemover.topoChange(map);
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Info<< "Writing fields" << nl << endl;
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runTime.write();
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// Check mesh volume conservation
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if (mesh.moving())
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{
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#include "volContinuity.H"
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}
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else
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{
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if (mesh.V().size() != mesh.nCells())
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{
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FatalErrorInFunction
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<< "Volume not mapped. V:" << mesh.V().size()
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<< " nCells:" << mesh.nCells()
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<< exit(FatalError);
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}
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const scalar newVol = gSum(mesh.V());
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Info<< "Initial volume = " << totalVol
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<< " New volume = " << newVol
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<< endl;
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if (mag(newVol-totalVol)/totalVol > 1e-10)
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{
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FatalErrorInFunction
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<< "Volume loss: old volume:" << totalVol
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<< " new volume:" << newVol
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<< exit(FatalError);
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}
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else
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{
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Info<< "Volume check OK" << nl << endl;
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}
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}
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// Check constant profile
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{
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const scalar max = gMax(one);
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const scalar min = gMin(one);
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Info<< "Uniform one field min = " << min
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<< " max = " << max << endl;
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if (notEqual(max, 1.0, 1e-10) || notEqual(min, 1.0, 1e-10))
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{
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FatalErrorInFunction
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<< "Uniform volVectorField not preserved."
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<< " Min and max should both be 1.0. min:" << min
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<< " max:" << max
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<< exit(FatalError);
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}
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else
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{
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Info<< "Uniform field mapping check OK" << nl << endl;
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}
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}
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// Check linear profile
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{
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const scalarField diff = ccX-mesh.C().component(0);
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const scalar max = gMax(diff);
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const scalar min = gMin(diff);
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Info<< "Linear profile field min = " << min
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<< " max = " << max << endl;
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if (notEqual(max, 0.0, 1e-10) || notEqual(min, 0.0, 1e-10))
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{
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FatalErrorInFunction
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<< "Linear profile not preserved."
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<< " Min and max should both be 0.0. min:" << min
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<< " max:" << max
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<< exit(FatalError);
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}
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else
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{
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Info<< "Linear profile mapping check OK" << nl << endl;
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}
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}
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// Check face field mapping
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if (surfaceOne.size())
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{
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const scalar max = gMax(surfaceOne.primitiveField());
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const scalar min = gMin(surfaceOne.primitiveField());
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Info<< "Uniform surface field min = " << min
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<< " max = " << max << endl;
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if (notEqual(max, 1.0, 1e-10) || notEqual(min, 1.0, 1e-10))
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{
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FatalErrorInFunction
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<< "Uniform surfaceScalarField not preserved."
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<< " Min and max should both be 1.0. min:" << min
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<< " max:" << max
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<< exit(FatalError);
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}
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else
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{
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Info<< "Uniform surfaceScalarField mapping check OK" << nl
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<< endl;
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}
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}
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Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
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<< " ClockTime = " << runTime.elapsedClockTime() << " s"
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<< nl << endl;
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}
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Info<< "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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