413 lines
10 KiB
C
413 lines
10 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 | Copyright (C) 2011-2017 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 "movingConeTopoFvMesh.H"
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#include "Time.H"
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#include "mapPolyMesh.H"
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#include "layerAdditionRemoval.H"
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#include "addToRunTimeSelectionTable.H"
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#include "meshTools.H"
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#include "OFstream.H"
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#include "mathematicalConstants.H"
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using namespace Foam::constant::mathematical;
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(movingConeTopoFvMesh, 0);
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addToRunTimeSelectionTable
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(
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topoChangerFvMesh,
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movingConeTopoFvMesh,
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IOobject
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);
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}
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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Foam::tmp<Foam::scalarField> Foam::movingConeTopoFvMesh::vertexMarkup
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(
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const pointField& p,
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const scalar curLeft,
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const scalar curRight
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) const
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{
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Info<< "Updating vertex markup. curLeft: "
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<< curLeft << " curRight: " << curRight << endl;
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tmp<scalarField> tvertexMarkup(new scalarField(p.size()));
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scalarField& vertexMarkup = tvertexMarkup.ref();
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forAll(p, pI)
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{
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if (p[pI].x() < curLeft - SMALL)
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{
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vertexMarkup[pI] = -1;
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}
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else if (p[pI].x() > curRight + SMALL)
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{
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vertexMarkup[pI] = 1;
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}
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else
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{
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vertexMarkup[pI] = 0;
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}
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}
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return tvertexMarkup;
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}
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void Foam::movingConeTopoFvMesh::addZonesAndModifiers()
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{
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// Add zones and modifiers for motion action
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if
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(
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pointZones().size()
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|| faceZones().size()
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|| cellZones().size()
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|| topoChanger_.size()
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)
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{
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InfoInFunction
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<< "Zones and modifiers already present. Skipping."
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<< endl;
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return;
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}
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Info<< "Time = " << time().timeName() << endl
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<< "Adding zones and modifiers to the mesh" << endl;
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const vectorField& fc = faceCentres();
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const vectorField& fa = faceAreas();
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labelList zone1(fc.size());
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boolList flipZone1(fc.size(), false);
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label nZoneFaces1 = 0;
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labelList zone2(fc.size());
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boolList flipZone2(fc.size(), false);
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label nZoneFaces2 = 0;
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forAll(fc, facei)
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{
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if
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(
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fc[facei].x() > -0.003501
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&& fc[facei].x() < -0.003499
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)
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{
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if ((fa[facei] & vector(1, 0, 0)) < 0)
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{
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flipZone1[nZoneFaces1] = true;
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}
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zone1[nZoneFaces1] = facei;
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Info<< "face " << facei << " for zone 1. Flip: "
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<< flipZone1[nZoneFaces1] << endl;
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nZoneFaces1++;
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}
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else if
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(
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fc[facei].x() > -0.00701
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&& fc[facei].x() < -0.00699
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)
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{
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zone2[nZoneFaces2] = facei;
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if ((fa[facei] & vector(1, 0, 0)) > 0)
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{
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flipZone2[nZoneFaces2] = true;
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}
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Info<< "face " << facei << " for zone 2. Flip: "
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<< flipZone2[nZoneFaces2] << endl;
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nZoneFaces2++;
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}
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}
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zone1.setSize(nZoneFaces1);
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flipZone1.setSize(nZoneFaces1);
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zone2.setSize(nZoneFaces2);
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flipZone2.setSize(nZoneFaces2);
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Info<< "zone: " << zone1 << endl;
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Info<< "zone: " << zone2 << endl;
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List<pointZone*> pz(0);
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List<faceZone*> fz(2);
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List<cellZone*> cz(0);
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label nFz = 0;
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fz[nFz] =
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new faceZone
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(
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"rightExtrusionFaces",
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zone1,
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flipZone1,
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nFz,
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faceZones()
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);
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nFz++;
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fz[nFz] =
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new faceZone
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(
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"leftExtrusionFaces",
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zone2,
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flipZone2,
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nFz,
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faceZones()
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);
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nFz++;
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fz.setSize(nFz);
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Info<< "Adding mesh zones." << endl;
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addZones(pz, fz, cz);
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// Add layer addition/removal interfaces
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List<polyMeshModifier*> tm(2);
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label nMods = 0;
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tm[nMods] =
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new layerAdditionRemoval
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(
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"right",
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nMods,
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topoChanger_,
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"rightExtrusionFaces",
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readScalar
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(
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motionDict_.subDict("right").lookup("minThickness")
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),
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readScalar
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(
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motionDict_.subDict("right").lookup("maxThickness")
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)
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);
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nMods++;
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tm[nMods] = new layerAdditionRemoval
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(
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"left",
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nMods,
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topoChanger_,
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"leftExtrusionFaces",
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readScalar
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(
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motionDict_.subDict("left").lookup("minThickness")
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),
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readScalar
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(
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motionDict_.subDict("left").lookup("maxThickness")
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)
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);
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nMods++;
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tm.setSize(nMods);
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Info<< "Adding " << nMods << " mesh modifiers" << endl;
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topoChanger_.addTopologyModifiers(tm);
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write();
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::movingConeTopoFvMesh::movingConeTopoFvMesh(const IOobject& io)
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:
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topoChangerFvMesh(io),
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motionDict_
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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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"dynamicMeshDict",
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time().constant(),
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*this,
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IOobject::MUST_READ_IF_MODIFIED,
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IOobject::NO_WRITE,
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false
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)
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).subDict(typeName + "Coeffs")
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),
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motionVelAmplitude_(motionDict_.lookup("motionVelAmplitude")),
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motionVelPeriod_(readScalar(motionDict_.lookup("motionVelPeriod"))),
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curMotionVel_
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(
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motionVelAmplitude_*sin(time().value()*pi/motionVelPeriod_)
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),
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leftEdge_(readScalar(motionDict_.lookup("leftEdge"))),
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curLeft_(readScalar(motionDict_.lookup("leftObstacleEdge"))),
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curRight_(readScalar(motionDict_.lookup("rightObstacleEdge")))
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{
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Pout<< "Initial time:" << time().value()
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<< " Initial curMotionVel_:" << curMotionVel_
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<< endl;
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addZonesAndModifiers();
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curLeft_ = average
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(
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faceZones()
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[
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faceZones().findZoneID("leftExtrusionFaces")
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]().localPoints()
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).x() - SMALL;
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curRight_ = average
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(
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faceZones()
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[
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faceZones().findZoneID("rightExtrusionFaces")
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]().localPoints()
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).x() + SMALL;
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motionMask_ = vertexMarkup
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(
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points(),
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curLeft_,
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curRight_
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);
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}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::movingConeTopoFvMesh::~movingConeTopoFvMesh()
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{}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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bool Foam::movingConeTopoFvMesh::update()
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{
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// Do mesh changes (use inflation - put new points in topoChangeMap)
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autoPtr<mapPolyMesh> topoChangeMap = topoChanger_.changeMesh(true);
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// Calculate the new point positions depending on whether the
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// topological change has happened or not
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pointField newPoints;
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vector curMotionVel_ =
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motionVelAmplitude_*sin(time().value()*pi/motionVelPeriod_);
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Pout<< "time:" << time().value() << " curMotionVel_:" << curMotionVel_
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<< " curLeft:" << curLeft_ << " curRight:" << curRight_
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<< endl;
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if (topoChangeMap.valid())
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{
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Info<< "Topology change. Calculating motion points" << endl;
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if (topoChangeMap().hasMotionPoints())
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{
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Info<< "Topology change. Has premotion points" << endl;
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motionMask_ =
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vertexMarkup
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(
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topoChangeMap().preMotionPoints(),
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curLeft_,
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curRight_
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);
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// Move points inside the motionMask
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newPoints =
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topoChangeMap().preMotionPoints()
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+ (
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pos(0.5 - mag(motionMask_)) // cells above the body
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)*curMotionVel_*time().deltaT().value();
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}
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else
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{
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Info<< "Topology change. Already set mesh points" << endl;
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motionMask_ =
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vertexMarkup
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(
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points(),
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curLeft_,
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curRight_
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);
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// Move points inside the motionMask
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newPoints =
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points()
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+ (
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pos(0.5 - mag(motionMask_)) // cells above the body
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)*curMotionVel_*time().deltaT().value();
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}
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}
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else
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{
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Info<< "No topology change" << endl;
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// Set the mesh motion
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newPoints =
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points()
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+ (
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pos(0.5 - mag(motionMask_)) // cells above the body
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)*curMotionVel_*time().deltaT().value();
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}
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// The mesh now contains the cells with zero volume
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Info << "Executing mesh motion" << endl;
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movePoints(newPoints);
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// The mesh now has got non-zero volume cells
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curLeft_ = average
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(
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faceZones()
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[
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faceZones().findZoneID("leftExtrusionFaces")
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]().localPoints()
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).x() - SMALL;
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curRight_ = average
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(
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faceZones()
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[
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faceZones().findZoneID("rightExtrusionFaces")
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]().localPoints()
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).x() + SMALL;
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return true;
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}
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// ************************************************************************* //
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