applications/solvers/incompressible/pisoFoam/pisoFoam.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | foam-extend: Open Source CFD
   4    \\    /   O peration     | Version:     3.2
   5     \\  /    A nd           | Web:         http://www.foam-extend.org
   6      \\/     M anipulation  | For copyright notice see file Copyright
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of foam-extend.
  10
  11     foam-extend is free software: you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by the
  13     Free Software Foundation, either version 3 of the License, or (at your
  14     option) any later version.
  15
  16     foam-extend is distributed in the hope that it will be useful, but
  17     WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19     General Public License for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 Application
  25     pisoFoam
  26
  27 Description
  28     Transient solver for incompressible flow.
  29
  30     Turbulence modelling is generic, i.e. laminar, RAS or LES may be selected.
  31
  32 \*---------------------------------------------------------------------------*/
  33
  34 #include "fvCFD.H"
  35 #include "singlePhaseTransportModel.H"
  36 #include "turbulenceModel.H"
  37
  38 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  39
  40 int main(int argc, char *argv[])
  41 {
  42 #   include "setRootCase.H"
  43
  44 #   include "createTime.H"
  45 #   include "createMesh.H"
  46 #   include "createFields.H"
  47 #   include "initContinuityErrs.H"
  48
  49 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  50
  51     Info<< "\nStarting time loop\n" << endl;
  52
  53     while (runTime.loop())
  54     {
  55         Info<< "Time = " << runTime.timeName() << nl << endl;
  56
  57 #       include "readPISOControls.H"
  58 #       include "CourantNo.H"
  59
  60         // Pressure-velocity PISO corrector
  61         {
  62             // Momentum predictor
  63
  64             fvVectorMatrix UEqn
  65             (
  66                 fvm::ddt(U)
  67               + fvm::div(phi, U)
  68               + turbulence->divDevReff(U)
  69             );
  70
  71             UEqn.relax();
  72
  73             if (momentumPredictor)
  74             {
  75                 solve(UEqn == -fvc::grad(p));
  76             }
  77
  78             // --- PISO loop
  79
  80             for (int corr = 0; corr < nCorr; corr++)
  81             {
  82                 volScalarField rUA = 1.0/UEqn.A();
  83
  84                 U = rUA*UEqn.H();
  85                 phi = (fvc::interpolate(U) & mesh.Sf())
  86                     + fvc::ddtPhiCorr(rUA, U, phi);
  87
  88                 adjustPhi(phi, U, p);
  89
  90                 // Non-orthogonal pressure corrector loop
  91                 for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
  92                 {
  93                     // Pressure corrector
  94
  95                     fvScalarMatrix pEqn
  96                     (
  97                         fvm::laplacian(rUA, p) == fvc::div(phi)
  98                     );
  99
 100                     pEqn.setReference(pRefCell, pRefValue);
 101
 102                     if
 103                     (
 104                         corr == nCorr-1
 105                      && nonOrth == nNonOrthCorr
 106                     )
 107                     {
 108                         pEqn.solve(mesh.solutionDict().solver("pFinal"));
 109                     }
 110                     else
 111                     {
 112                         pEqn.solve();
 113                     }
 114
 115                     if (nonOrth == nNonOrthCorr)
 116                     {
 117                         phi -= pEqn.flux();
 118                     }
 119                 }
 120
 121 #               include "continuityErrs.H"
 122
 123                 U -= rUA*fvc::grad(p);
 124                 U.correctBoundaryConditions();
 125             }
 126         }
 127
 128         turbulence->correct();
 129
 130         runTime.write();
 131
 132         Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 133             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 134             << nl << endl;
 135     }
 136
 137     Info<< "End\n" << endl;
 138
 139     return 0;
 140 }
 141
 142
 143 // ************************************************************************* //