126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | foam-extend: Open Source CFD
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\\ / O peration | Version: 3.2
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\\ / A nd | Web: http://www.foam-extend.org
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\\/ M anipulation | For copyright notice see file Copyright
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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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consistentIcoFoam
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Description
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Transient solver for incompressible, laminar flow of Newtonian fluids.
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Consistent formulation without time-step and relaxation dependence by Jasak
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Author
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Hrvoje Jasak, Wikki Ltd. All rights reserved
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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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# include "createFields.H"
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# include "initContinuityErrs.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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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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# include "readPISOControls.H"
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# include "CourantNo.H"
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// Convection-diffusion matrix
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fvVectorMatrix HUEqn
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(
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fvm::div(phi, U)
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- fvm::laplacian(nu, U)
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);
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// ddt matrix
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fvVectorMatrix ddtUEqn(fvm::ddt(U));
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solve(ddtUEqn + HUEqn == -fvc::grad(p));
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// Prepare clean Ap without time derivative contribution
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// HJ, 26/Oct/2015
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volScalarField aU = HUEqn.A();
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// --- PISO loop
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for (int corr = 0; corr < nCorr; corr++)
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{
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U = HUEqn.H()/aU;
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phi = (fvc::interpolate(U) & mesh.Sf());
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adjustPhi(phi, U, p);
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for (int nonOrth = 0; nonOrth <= nNonOrthCorr; nonOrth++)
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{
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fvScalarMatrix pEqn
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(
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fvm::laplacian(1/aU, p) == fvc::div(phi)
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);
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pEqn.setReference(pRefCell, pRefValue);
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pEqn.solve();
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if (nonOrth == nNonOrthCorr)
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{
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phi -= pEqn.flux();
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}
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}
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# include "continuityErrs.H"
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// Note: cannot call H(U) here because the velocity is not complete
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// HJ, 22/Jan/2016
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U = 1.0/(aU + ddtUEqn.A())*
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(
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U*aU - fvc::grad(p) + ddtUEqn.H()
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);
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U.correctBoundaryConditions();
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}
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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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// ************************************************************************* //
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