164 lines
5 KiB
C
164 lines
5 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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shallowWaterFoam
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Description
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Transient solver for inviscid shallow-water equations with rotation.
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If the geometry is 3D then it is assumed to be one layers of cells and the
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component of the velocity normal to gravity is removed.
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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 "readGravitationalAcceleration.H"
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#include "createFields.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<< "\n Time = " << runTime.timeName() << nl << endl;
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#include "readPISOControls.H"
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#include "CourantNo.H"
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for (int ucorr=0; ucorr<nOuterCorr; ucorr++)
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{
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surfaceScalarField phiv("phiv", phi/fvc::interpolate(h));
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fvVectorMatrix hUEqn
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(
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fvm::ddt(hU)
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+ fvm::div(phiv, hU)
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);
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hUEqn.relax();
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if (momentumPredictor)
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{
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if (rotating)
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{
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solve(hUEqn + (F ^ hU) == -magg*h*fvc::grad(h + h0));
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}
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else
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{
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solve(hUEqn == -magg*h*fvc::grad(h + h0));
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}
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// Constrain the momentum to be in the geometry if 3D geometry
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if (mesh.nGeometricD() == 3)
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{
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hU -= (gHat & hU)*gHat;
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hU.correctBoundaryConditions();
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}
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}
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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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surfaceScalarField hf = fvc::interpolate(h);
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volScalarField rUA = 1.0/hUEqn.A();
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surfaceScalarField ghrUAf = magg*fvc::interpolate(h*rUA);
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surfaceScalarField phih0 = ghrUAf*mesh.magSf()*fvc::snGrad(h0);
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if (rotating)
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{
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hU = rUA*(hUEqn.H() - (F ^ hU));
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}
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else
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{
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hU = rUA*hUEqn.H();
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}
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phi = (fvc::interpolate(hU) & mesh.Sf())
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+ fvc::ddtPhiCorr(rUA, h, hU, phi)
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- phih0;
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for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
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{
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fvScalarMatrix hEqn
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(
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fvm::ddt(h)
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+ fvc::div(phi)
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- fvm::laplacian(ghrUAf, h)
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);
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if (ucorr < nOuterCorr-1 || corr < nCorr-1)
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{
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hEqn.solve();
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}
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else
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{
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hEqn.solve(mesh.solver(h.name() + "Final"));
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}
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if (nonOrth == nNonOrthCorr)
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{
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phi += hEqn.flux();
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}
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}
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hU -= rUA*h*magg*fvc::grad(h + h0);
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// Constrain the momentum to be in the geometry if 3D geometry
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if (mesh.nGeometricD() == 3)
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{
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hU -= (gHat & hU)*gHat;
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}
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hU.correctBoundaryConditions();
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}
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}
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U == hU/h;
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hTotal == h + h0;
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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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