145 lines
4.7 KiB
C++
145 lines
4.7 KiB
C++
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | foam-extend: Open Source CFD
|
|
\\ / O peration | Version: 4.1
|
|
\\ / A nd | Web: http://www.foam-extend.org
|
|
\\/ M anipulation | For copyright notice see file Copyright
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of foam-extend.
|
|
|
|
foam-extend 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 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
foam-extend 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 foam-extend. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Application
|
|
RichardsFoam
|
|
|
|
Description
|
|
Transient solver for flow in unsaturated porous media
|
|
With chord slope formulation of the Richards equation.
|
|
van Genuchten laws for unsaturated hydraulic properties parametrisation
|
|
Global computation of the convergence criterium
|
|
Adaptative time stepping with a stabilisation procedure
|
|
NB 1: use backward scheme for time discretisation
|
|
NB 2: use only mesh with constant cell volumes
|
|
|
|
References
|
|
version 0.0 (develloped with OpenFOAM 2.0.1)
|
|
Details may be found in:
|
|
Orgogozo, L., Renon, N., Soulaine, C., Hénon, F., Tomer, S.K., Labat, D.,
|
|
Pokrovsky, O.S., Sekhar, M., Ababou, R., Quintard, M., Submitted.
|
|
Mechanistic modelling of water fluxes at the watershed scale: An open source
|
|
massively parallel solver for Richards equation.
|
|
Submitted to Computer Physics Communications.
|
|
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "fvCFD.H"
|
|
#include "pimpleControl.H"
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
# include "setRootCase.H"
|
|
# include "createTime.H"
|
|
# include "createMesh.H"
|
|
|
|
// pimpleControl pimple(mesh);
|
|
|
|
# include "readPicardControls.H"
|
|
# include "createFields.H"
|
|
# include "initContinuityErrs.H"
|
|
# include "createTimeControls.H"
|
|
|
|
Info<< "\nStarting time loop\n" << endl;
|
|
|
|
// starting of the time loop.
|
|
while (runTime.loop())
|
|
{
|
|
// time step control operations.
|
|
# include "readTimeControls.H"
|
|
# include "setDeltaT.H"
|
|
|
|
// runTime++;
|
|
|
|
Info<< "Time = " << runTime.timeName() << nl << endl;
|
|
|
|
// Beginning of the stabilisation loop for the stabilised adaptive time
|
|
// step procedure.
|
|
for (int cyc = 0; cyc < nMaxCycle; cyc++)
|
|
{
|
|
// Beginning of the Picard loop.
|
|
for (int pic = 0; pic < nIterPicard; pic++)
|
|
{
|
|
# include "psiEqn.H"
|
|
}
|
|
|
|
// Exit test for the loop associated with the stabilisation cycles
|
|
// for the adaptive time step procedure.
|
|
if (crit < precPicard)
|
|
{
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
Info << "Criterion not reached, restart time loop iteration"
|
|
<< "with a smaller time step / Error = " << crit
|
|
<< nl << endl;
|
|
|
|
runTime.setDeltaT((1/tFact)*runTime.deltaTValue());
|
|
|
|
Info<< "deltaT = " << runTime.deltaTValue() << endl;
|
|
}
|
|
// End of the stabilisation cycles loop.
|
|
}
|
|
|
|
// Warning test in case of convergence failure of the Picard loop.
|
|
if (crit >= precPicard)
|
|
{
|
|
Info<< "Convergence failure / Error = " << crit << nl << endl;
|
|
currentPicard = nIterPicard;
|
|
}
|
|
|
|
// Final updating of the result fields before going to the next time
|
|
// iteration.
|
|
psi_tmp = psi;
|
|
|
|
thtil_tmp = 0.5*
|
|
(
|
|
(1 + sign(psi_tmp)) + (1 - sign(psi_tmp))*
|
|
pow((1 + pow(mag(alpha*psi_tmp),n)), - (1 - (1/n)))
|
|
);
|
|
|
|
theta = (thetas - thetar)*thtil + thetar;
|
|
|
|
U = - Krel*((fvc::grad(psi)) + vuz);
|
|
|
|
// Writting of the result.
|
|
runTime.write();
|
|
|
|
Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
|
|
<< " ClockTime = " << runTime.elapsedClockTime() << " s"
|
|
<< nl << endl;
|
|
|
|
// end of the time loop.
|
|
}
|
|
|
|
Info<< "End\n" << endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|