applications/test/LduMatrix/LduMatrixTest3.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 #include "LduMatrix.H"
  35 #include "diagTensorField.H"
  36
  37 typedef LduMatrix<vector, scalar, scalar> lduVectorMatrix;
  38
  39
  40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  41
  42 int main(int argc, char *argv[])
  43 {
  44
  45 #   include "setRootCase.H"
  46
  47 #   include "createTime.H"
  48 #   include "createMesh.H"
  49 #   include "createFields.H"
  50 #   include "initContinuityErrs.H"
  51
  52 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  53
  54     Info<< "\nStarting time loop\n" << endl;
  55
  56     while (runTime.loop())
  57     {
  58         Info<< "Time = " << runTime.timeName() << nl << endl;
  59
  60 #       include "readPISOControls.H"
  61 #       include "CourantNo.H"
  62
  63         fvVectorMatrix UEqn
  64         (
  65             fvm::ddt(U)
  66           + fvm::div(phi, U)
  67           - fvm::laplacian(nu, U)
  68         );
  69
  70         fvVectorMatrix UEqnp(UEqn == -fvc::grad(p));
  71
  72         lduVectorMatrix U3Eqnp(mesh);
  73         U3Eqnp.diag() = UEqnp.diag();
  74         U3Eqnp.upper() = UEqnp.upper();
  75         U3Eqnp.lower() = UEqnp.lower();
  76         U3Eqnp.source() = UEqnp.source();
  77
  78         UEqnp.addBoundaryDiag(U3Eqnp.diag(), 0);
  79         UEqnp.addBoundarySource(U3Eqnp.source(), false);
  80
  81         autoPtr<lduVectorMatrix::solver> U3EqnpSolver =
  82             lduVectorMatrix::solver::New
  83             (
  84                 U.name(),
  85                 U3Eqnp,
  86                 dictionary
  87                 (
  88                     IStringStream
  89                     (
  90                         "{"
  91                         "    solver           PBiCG;"
  92                         "    preconditioner   DILU;"
  93                         "    tolerance        (1e-13 1e-13 1e-13);"
  94                         "    relTol           (0 0 0);"
  95                         "}"
  96                     )()
  97                 )
  98             );
  99
 100         U3EqnpSolver->solve(U).print(Info);
 101
 102         // --- PISO loop
 103
 104         for (int corr=0; corr<nCorr; corr++)
 105         {
 106             volScalarField rUA = 1.0/UEqn.A();
 107
 108             U = rUA*UEqn.H();
 109             phi = (fvc::interpolate(U) & mesh.Sf())
 110                 + fvc::ddtPhiCorr(rUA, U, phi);
 111
 112             adjustPhi(phi, U, p);
 113
 114             for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
 115             {
 116                 fvScalarMatrix pEqn
 117                 (
 118                     fvm::laplacian(rUA, p) == fvc::div(phi)
 119                 );
 120
 121                 pEqn.setReference(pRefCell, pRefValue);
 122                 pEqn.solve();
 123
 124                 if (nonOrth == nNonOrthCorr)
 125                 {
 126                     phi -= pEqn.flux();
 127                 }
 128             }
 129
 130 #           include "continuityErrs.H"
 131
 132             U -= rUA*fvc::grad(p);
 133             U.correctBoundaryConditions();
 134         }
 135
 136         runTime.write();
 137
 138         Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 139             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 140             << nl << endl;
 141     }
 142
 143     Info<< "End\n" << endl;
 144
 145     return 0;
 146 }
 147
 148
 149 // ************************************************************************* //