applications/utilities/errorEstimation/icoErrorEstimate/icoErrorEstimate.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     icoErrorEstimate
  26
  27 Description
  28     Estimates error for the incompressible laminar CFD application icoFoam.
  29
  30 \*---------------------------------------------------------------------------*/
  31
  32 #include "fvCFD.H"
  33 #include "errorEstimate.H"
  34 #include "resError.H"
  35
  36 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  37
  38 int main(int argc, char *argv[])
  39 {
  40     timeSelector::addOptions();
  41
  42 #   include "setRootCase.H"
  43 #   include "createTime.H"
  44
  45     instantList timeDirs = timeSelector::select0(runTime, args);
  46
  47 #   include "createMesh.H"
  48
  49     Info<< "\nEstimating error in the incompressible momentum equation\n"
  50         << "Reading transportProperties\n" << endl;
  51
  52     IOdictionary transportProperties
  53     (
  54         IOobject
  55         (
  56             "transportProperties",
  57             runTime.constant(),
  58             mesh,
  59             IOobject::MUST_READ,
  60             IOobject::NO_WRITE
  61         )
  62     );
  63
  64     dimensionedScalar nu
  65     (
  66         transportProperties.lookup("nu")
  67     );
  68
  69     forAll(timeDirs, timeI)
  70     {
  71         runTime.setTime(timeDirs[timeI], timeI);
  72
  73         Info<< "Time = " << runTime.timeName() << endl;
  74
  75         mesh.readUpdate();
  76
  77         IOobject pHeader
  78         (
  79             "p",
  80             runTime.timeName(),
  81             mesh,
  82             IOobject::MUST_READ
  83         );
  84
  85         IOobject Uheader
  86         (
  87             "U",
  88             runTime.timeName(),
  89             mesh,
  90             IOobject::MUST_READ
  91         );
  92
  93         if (pHeader.headerOk() && Uheader.headerOk())
  94         {
  95             Info << "Reading p" << endl;
  96             volScalarField p(pHeader, mesh);
  97
  98             Info << "Reading U" << endl;
  99             volVectorField U(Uheader, mesh);
 100
 101 #           include "createPhi.H"
 102
 103             errorEstimate<vector> ee
 104             (
 105                 resError::div(phi, U)
 106               - resError::laplacian(nu, U)
 107              ==
 108                -fvc::grad(p)
 109             );
 110
 111             volVectorField e = ee.error();
 112             e.write();
 113             mag(e)().write();
 114         }
 115         else
 116         {
 117             Info<< "    No p or U" << endl;
 118         }
 119
 120         Info<< endl;
 121     }
 122
 123     Info<< "End\n" << endl;
 124
 125     return 0;
 126 }
 127
 128
 129 // ************************************************************************* //