155 lines
4.4 KiB
C
155 lines
4.4 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 held by original author
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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 the
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Free Software Foundation; either version 2 of the License, or (at your
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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, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Application
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channelFoam
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Description
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Incompressible LES solver for flow in a channel.
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "singlePhaseTransportModel.H"
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#include "LESModel.H"
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#include "IFstream.H"
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#include "OFstream.H"
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#include "Random.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 "readTransportProperties.H"
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#include "createFields.H"
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#include "initContinuityErrs.H"
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#include "createGradP.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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#include "readPISOControls.H"
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#include "CourantNo.H"
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sgsModel->correct();
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fvVectorMatrix UEqn
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(
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fvm::ddt(U)
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+ fvm::div(phi, U)
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+ sgsModel->divDevBeff(U)
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==
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flowDirection*gradP
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);
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if (momentumPredictor)
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{
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solve(UEqn == -fvc::grad(p));
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}
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// --- PISO loop
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volScalarField rUA = 1.0/UEqn.A();
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for (int corr = 0; corr < nCorr; corr++)
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{
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U = rUA*UEqn.H();
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phi = (fvc::interpolate(U) & mesh.Sf())
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+ fvc::ddtPhiCorr(rUA, U, phi);
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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(rUA, p) == fvc::div(phi)
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);
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pEqn.setReference(pRefCell, pRefValue);
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if (corr == nCorr-1 && nonOrth == nNonOrthCorr)
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{
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pEqn.solve(mesh.solutionDict().solver(p.name() + "Final"));
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}
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else
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{
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pEqn.solve(mesh.solutionDict().solver(p.name()));
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}
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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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U -= rUA*fvc::grad(p);
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U.correctBoundaryConditions();
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}
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// Correct driving force for a constant mass flow rate
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// Extract the velocity in the flow direction
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dimensionedScalar magUbarStar =
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(flowDirection & U)().weightedAverage(mesh.V());
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// Calculate the pressure gradient increment needed to
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// adjust the average flow-rate to the correct value
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dimensionedScalar gragPplus =
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(magUbar - magUbarStar)/rUA.weightedAverage(mesh.V());
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U += flowDirection*rUA*gragPplus;
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gradP += gragPplus;
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Info<< "Uncorrected Ubar = " << magUbarStar.value() << tab
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<< "pressure gradient = " << gradP.value() << endl;
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runTime.write();
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#include "writeGradP.H"
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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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