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foam-extend4.1-coherent-io/applications/solvers/incompressible/shallowWaterFoam/shallowWaterFoam.C
2011-10-12 10:32:05 +01:00

167 lines
5.1 KiB
C

/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright held by original author
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Application
shallowWaterFoam
Description
Transient solver for inviscid shallow-water equations with rotation.
If the geometry is 3D then it is assumed to be one layers of cells and the
component of the velocity normal to gravity is removed.
\*---------------------------------------------------------------------------*/
#include "fvCFD.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
int main(int argc, char *argv[])
{
#include "setRootCase.H"
#include "createTime.H"
#include "createMesh.H"
#include "readGravitationalAcceleration.H"
#include "createFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Info<< "\nStarting time loop\n" << endl;
while (runTime.loop())
{
Info<< "\n Time = " << runTime.timeName() << nl << endl;
#include "readPISOControls.H"
#include "CourantNo.H"
for (int ucorr=0; ucorr<nOuterCorr; ucorr++)
{
surfaceScalarField phiv("phiv", phi/fvc::interpolate(h));
fvVectorMatrix hUEqn
(
fvm::ddt(hU)
+ fvm::div(phiv, hU)
);
hUEqn.relax();
if (momentumPredictor)
{
if (rotating)
{
solve(hUEqn + (F ^ hU) == -magg*h*fvc::grad(h + h0));
}
else
{
solve(hUEqn == -magg*h*fvc::grad(h + h0));
}
// Constrain the momentum to be in the geometry if 3D geometry
if (mesh.nGeometricD() == 3)
{
hU -= (gHat & hU)*gHat;
hU.correctBoundaryConditions();
}
}
// --- PISO loop
for (int corr=0; corr<nCorr; corr++)
{
surfaceScalarField hf = fvc::interpolate(h);
volScalarField rUA = 1.0/hUEqn.A();
surfaceScalarField ghrUAf = magg*fvc::interpolate(h*rUA);
surfaceScalarField phih0 = ghrUAf*mesh.magSf()*fvc::snGrad(h0);
if (rotating)
{
hU = rUA*(hUEqn.H() - (F ^ hU));
}
else
{
hU = rUA*hUEqn.H();
}
phi = (fvc::interpolate(hU) & mesh.Sf())
+ fvc::ddtPhiCorr(rUA, h, hU, phi)
- phih0;
for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
{
fvScalarMatrix hEqn
(
fvm::ddt(h)
+ fvc::div(phi)
- fvm::laplacian(ghrUAf, h)
);
if (ucorr < nOuterCorr - 1 || corr < nCorr - 1)
{
hEqn.solve();
}
else
{
hEqn.solve
(
mesh.solutionDict().solver(h.name() + "Final")
);
}
if (nonOrth == nNonOrthCorr)
{
phi += hEqn.flux();
}
}
hU -= rUA*h*magg*fvc::grad(h + h0);
// Constrain the momentum to be in the geometry if 3D geometry
if (mesh.nGeometricD() == 3)
{
hU -= (gHat & hU)*gHat;
}
hU.correctBoundaryConditions();
}
}
U == hU/h;
hTotal == h + h0;
runTime.write();
Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
<< " ClockTime = " << runTime.elapsedClockTime() << " s"
<< nl << endl;
}
Info<< "End\n" << endl;
return 0;
}
// ************************************************************************* //