127 lines
4.2 KiB
C
127 lines
4.2 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration |
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\\ / A nd | For copyright notice see file Copyright
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of foam-extend.
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foam-extend 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 the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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foam-extend is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
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Application
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pUCoupledFoam
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Description
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Steady-state solver for incompressible, turbulent flow, with implicit
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coupling between pressure and velocity achieved by BlockLduMatrix
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Turbulence is in this version solved using the existing turbulence
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structure.
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Authors
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Klas Jareteg, Chalmers University of Technology,
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Vuko Vukcevic, FMENA Zagreb.
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "singlePhaseTransportModel.H"
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#include "RASModel.H"
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#include "VectorNFieldTypes.H"
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#include "volVectorNFields.H"
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#include "blockLduSolvers.H"
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#include "blockVectorNMatrices.H"
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#include "blockMatrixTools.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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# include "createFields.H"
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# include "initContinuityErrs.H"
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# include "readBlockSolverControls.H"
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// Calculate coupling matrices only once since the mesh doesn't change and
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// implicit div and grad operators are only dependant on Sf. Actually
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// coupling terms (div(U) and grad(p)) in blockMatrix do not change,
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// so they could be inserted only once, resetting other parts of
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// blockMatrix to zero at the end of each time step. VV, 30/April/2014
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# include "calculateCouplingMatrices.H"
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Info<< "\nStarting time loop\n" << endl;
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while (runTime.loop())
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{
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Info<< "Time = " << runTime.timeName() << nl << endl;
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p.storePrevIter();
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// Initialize block matrix
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# include "initializeBlockMatrix.H"
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// Assemble and insert momentum equation
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# include "UEqn.H"
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// Assemble and insert pressure equation
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# include "pEqn.H"
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// Insert coupling, updating the boundary contributions
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// Last argument in insertBlockCoupling says if the first location
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// should be incremented. This is needed for arbitrary positioning
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// of U and p in the system. This could be better. VV, 30/April/2014
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blockMatrixTools::insertBlockCoupling(3, 0, UInp, U, A, b, false);
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blockMatrixTools::insertBlockCoupling(0, 3, pInU, p, A, b, true);
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// Solve the block matrix
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BlockSolverPerformance<vector4> solverPerf =
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BlockLduSolver<vector4>::New
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(
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word("Up"),
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A,
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mesh.solutionDict().solver("Up")
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)->solve(Up, b);
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solverPerf.print();
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// Retrieve solution
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blockMatrixTools::retrieveSolution(0, U.internalField(), Up);
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blockMatrixTools::retrieveSolution(3, p.internalField(), Up);
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U.correctBoundaryConditions();
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p.correctBoundaryConditions();
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phi = (fvc::interpolate(U) & mesh.Sf()) + pEqn.flux() + presSource;
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# include "continuityErrs.H"
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p.relax();
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turbulence->correct();
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runTime.write();
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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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