applications/solvers/incompressible/icoFoam/icoFoam.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM 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 2 of the License, or (at your
  14     option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with OpenFOAM; if not, write to the Free Software Foundation,
  23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24
  25 Application
  26     icoFoam
  27
  28 Description
  29     Transient solver for incompressible, laminar flow of Newtonian fluids.
  30
  31 \*---------------------------------------------------------------------------*/
  32
  33 #include "fvCFD.H"
  34
  35 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  36
  37 int main(int argc, char *argv[])
  38 {
  39     #include "setRootCase.H"
  40
  41     #include "createTime.H"
  42     #include "createMesh.H"
  43     #include "createFields.H"
  44     #include "initContinuityErrs.H"
  45
  46     // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  47
  48     Info<< "\nStarting time loop\n" << endl;
  49
  50     while (runTime.loop())
  51     {
  52         Info<< "Time = " << runTime.timeName() << nl << endl;
  53
  54         #include "readPISOControls.H"
  55         #include "CourantNo.H"
  56
  57         fvVectorMatrix UEqn
  58         (
  59             fvm::ddt(U)
  60           + fvm::div(phi, U)
  61           - fvm::laplacian(nu, U)
  62         );
  63
  64         solve(UEqn == -fvc::grad(p));
  65
  66         // --- PISO loop
  67
  68         for (int corr=0; corr<nCorr; corr++)
  69         {
  70             volScalarField rUA = 1.0/UEqn.A();
  71
  72             U = rUA*UEqn.H();
  73             phi = (fvc::interpolate(U) & mesh.Sf())
  74                 + fvc::ddtPhiCorr(rUA, U, phi);
  75
  76             adjustPhi(phi, U, p);
  77
  78             for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
  79             {
  80                 fvScalarMatrix pEqn
  81                 (
  82                     fvm::laplacian(rUA, p) == fvc::div(phi)
  83                 );
  84
  85                 pEqn.setReference(pRefCell, pRefValue);
  86                 pEqn.solve();
  87
  88                 if (nonOrth == nNonOrthCorr)
  89                 {
  90                     phi -= pEqn.flux();
  91                 }
  92             }
  93
  94             #include "continuityErrs.H"
  95
  96             U -= rUA*fvc::grad(p);
  97             U.correctBoundaryConditions();
  98         }
  99
 100         runTime.write();
 101
 102         Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 103             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 104             << nl << endl;
 105     }
 106
 107     Info<< "End\n" << endl;
 108
 109     return 0;
 110 }
 111
 112
 113 // ************************************************************************* //