b8ce733e4b
fvMesh::update() now executes at the beginning of the time-step, before time is incremented and handles topology change, mesh to mesh mapping and redistribution without point motion. Following each of these mesh changes fields are mapped from the previous mesh state to new mesh state in a conservative manner. These mesh changes not occur at most once per time-step. fvMesh::move() is executed after time is incremented and handles point motion mesh morphing during the time-step in an Arbitrary Lagrangian Eulerian approach requiring the mesh motion flux to match the cell volume change. fvMesh::move() can be called any number of times during the time-step to allow iterative update of the coupling between the mesh motion and field solution.
90 lines
2.7 KiB
C++
90 lines
2.7 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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Application
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engineCompRatio
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Description
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Calculate the geometric compression ratio.
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Note that if you have valves and/or extra volumes it will not work,
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since it calculates the volume at BDC and TCD.
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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#include "setRootCase.H"
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#include "createTime.H"
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#include "createMesh.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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scalar eps = 1.0e-10;
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scalar fullCycle = 360.0;
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scalar ca0 = -180.0;
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scalar ca1 = 0.0;
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while (runTime.userTimeValue() > ca0)
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{
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ca0 += fullCycle;
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ca1 += fullCycle;
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}
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while (mag(runTime.userTimeValue() - ca0) > eps)
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{
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scalar t0 = runTime.userTimeToTime(ca0 - runTime.userTimeValue());
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runTime.setDeltaT(t0);
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runTime++;
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Info<< "CA = " << runTime.userTimeValue() << endl;
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mesh.move();
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}
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scalar Vmax = sum(mesh.V().field());
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while (mag(runTime.userTimeValue()-ca1) > eps)
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{
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scalar t1 = runTime.userTimeToTime(ca1 - runTime.userTimeValue());
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runTime.setDeltaT(t1);
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runTime++;
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Info<< "CA = " << runTime.userTimeValue() << endl;
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mesh.move();
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}
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scalar Vmin = sum(mesh.V().field());
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Info<< "\nVmax = " << Vmax;
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Info<< ", Vmin = " << Vmin << endl;
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Info<< "Compression ratio Vmax/Vmin = " << Vmax/Vmin << endl;
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Info<< "\nEnd\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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