applications/solvers/basic/potentialFoam/potentialFoam.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2008 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     potentialFoam
  27
  28 Description
  29     Simple potential flow solver which can be used to generate starting fields
  30     for full Navier-Stokes codes.
  31
  32 \*---------------------------------------------------------------------------*/
  33
  34 #include "fvCFD.H"
  35
  36
  37 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  38
  39 int main(int argc, char *argv[])
  40 {
  41
  42     argList::validOptions.insert("writep", "");
  43
  44 #   include "setRootCase.H"
  45
  46 #   include "createTime.H"
  47 #   include "createMesh.H"
  48 #   include "createFields.H"
  49 #   include "readSIMPLEControls.H"
  50
  51 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  52
  53     Info<< nl << "Calculating potential flow" << endl;
  54
  55     adjustPhi(phi, U, p);
  56
  57     for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
  58     {
  59         fvScalarMatrix pEqn
  60         (
  61             fvm::laplacian
  62             (
  63                 dimensionedScalar
  64                 (
  65                     "1",
  66                     dimTime/p.dimensions()*dimensionSet(0, 2, -2, 0, 0),
  67                     1
  68                 ),
  69                 p
  70             )
  71          ==
  72             fvc::div(phi)
  73         );
  74
  75         pEqn.setReference(pRefCell, pRefValue);
  76         pEqn.solve();
  77
  78         if (nonOrth == nNonOrthCorr)
  79         {
  80             phi -= pEqn.flux();
  81         }
  82     }
  83
  84     Info<< "continuity error = "
  85         << mag(fvc::div(phi))().weightedAverage(mesh.V()).value()
  86         << endl;
  87
  88     U = fvc::reconstruct(phi);
  89     U.correctBoundaryConditions();
  90
  91     Info<< "Interpolated U error = "
  92         << (sqrt(sum(sqr((fvc::interpolate(U) & mesh.Sf()) - phi)))
  93           /sum(mesh.magSf())).value()
  94         << endl;
  95
  96     // Force the write
  97     U.write();
  98     phi.write();
  99
 100     if (args.options().found("writep"))
 101     {
 102         p.write();
 103     }
 104
 105     Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 106         << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 107         << nl << endl;
 108
 109     Info<< "End\n" << endl;
 110
 111     return(0);
 112 }
 113
 114
 115 // ************************************************************************* //