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) 2011 OpenFOAM Foundation
   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
  13     the Free Software Foundation, either version 3 of the License, or
  14     (at your 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, 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 rAU(1.0/UEqn.A());
  70
  71             U = rAU*UEqn.H();
  72             phi = (fvc::interpolate(U) & mesh.Sf())
  73                 + fvc::ddtPhiCorr(rAU, 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(rAU, 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 -= rAU*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 // ************************************************************************* //