applications/solvers/incompressible/icoFoam/icoFoam.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     icoFoam
  26
  27 Description
  28     Transient solver for incompressible, laminar flow of Newtonian fluids.
  29
  30 \*---------------------------------------------------------------------------*/
  31
  32 #include "fvCFD.H"
  33
  34 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  35
  36 int main(int argc, char *argv[])
  37 {
  38 #   include "setRootCase.H"
  39
  40 #   include "createTime.H"
  41 #   include "createMesh.H"
  42 #   include "createFields.H"
  43 #   include "initContinuityErrs.H"
  44
  45 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  46
  47     Info<< "\nStarting time loop\n" << endl;
  48
  49     while (runTime.loop())
  50     {
  51         Info<< "Time = " << runTime.timeName() << nl << endl;
  52
  53 #       include "readPISOControls.H"
  54 #       include "CourantNo.H"
  55
  56         fvVectorMatrix UEqn
  57         (
  58             fvm::ddt(U)
  59           + fvm::div(phi, U)
  60           - fvm::laplacian(nu, U)
  61         );
  62
  63         solve(UEqn == -fvc::grad(p));
  64
  65         // --- PISO loop
  66
  67         for (int corr = 0; corr < nCorr; corr++)
  68         {
  69             volScalarField rUA = 1.0/UEqn.A();
  70
  71             U = rUA*UEqn.H();
  72             phi = (fvc::interpolate(U) & mesh.Sf())
  73                 + fvc::ddtPhiCorr(rUA, U, phi);
  74
  75             adjustPhi(phi, U, p);
  76
  77             for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
  78             {
  79                 fvScalarMatrix pEqn
  80                 (
  81                     fvm::laplacian(rUA, p) == fvc::div(phi)
  82                 );
  83
  84                 pEqn.setReference(pRefCell, pRefValue);
  85                 pEqn.solve();
  86
  87                 if (nonOrth == nNonOrthCorr)
  88                 {
  89                     phi -= pEqn.flux();
  90                 }
  91             }
  92
  93 #           include "continuityErrs.H"
  94
  95             U -= rUA*fvc::grad(p);
  96             U.correctBoundaryConditions();
  97         }
  98
  99         runTime.write();
 100
 101         Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 102             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 103             << nl << endl;
 104     }
 105
 106     Info<< "End\n" << endl;
 107
 108     return 0;
 109 }
 110
 111
 112 // ************************************************************************* //