applications/utilities/postProcessing/patch/patchIntegrate/patchIntegrate.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     patchIntegrate
  27
  28 Description
  29     Calculates the integral of the specified field over the specified patch.
  30
  31 \*---------------------------------------------------------------------------*/
  32
  33 #include "fvCFD.H"
  34
  35 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  36 // Main program:
  37
  38 int main(int argc, char *argv[])
  39 {
  40     timeSelector::addOptions();
  41     argList::validArgs.append("fieldName");
  42     argList::validArgs.append("patchName");
  43 #   include "setRootCase.H"
  44 #   include "createTime.H"
  45     instantList timeDirs = timeSelector::select0(runTime, args);
  46 #   include "createMesh.H"
  47
  48     word fieldName(args.additionalArgs()[0]);
  49     word patchName(args.additionalArgs()[1]);
  50
  51     forAll(timeDirs, timeI)
  52     {
  53         runTime.setTime(timeDirs[timeI], timeI);
  54         Info<< "Time = " << runTime.timeName() << endl;
  55
  56         IOobject fieldHeader
  57         (
  58             fieldName,
  59             runTime.timeName(),
  60             mesh,
  61             IOobject::MUST_READ
  62         );
  63
  64         // Check field exists
  65         if (fieldHeader.headerOk())
  66         {
  67             mesh.readUpdate();
  68
  69             label patchi = mesh.boundaryMesh().findPatchID(patchName);
  70             if (patchi < 0)
  71             {
  72                 FatalError
  73                     << "Unable to find patch " << patchName << nl
  74                     << exit(FatalError);
  75             }
  76
  77             // Give patch area
  78             Info<< "    Patch area = " << sum(mesh.Sf()) << endl;
  79
  80             if (fieldHeader.headerClassName() == "volScalarField")
  81             {
  82                 Info<< "    Reading volScalarField " << fieldName << endl;
  83                 volScalarField field(fieldHeader, mesh);
  84
  85                 vector sumField = sum
  86                 (
  87                     mesh.Sf().boundaryField()[patchi]
  88                   * field.boundaryField()[patchi]
  89                 );
  90
  91                 Info<< "    Integral of " << fieldName << " over patch "
  92                     << patchName << '[' << patchi << ']' << " = "
  93                     << sumField << nl;
  94             }
  95             else if (fieldHeader.headerClassName() == "surfaceScalarField")
  96             {
  97                 Info<< "    Reading surfaceScalarField " << fieldName << endl;
  98
  99                 surfaceScalarField field(fieldHeader, mesh);
 100                 scalar sumField = sum(field.boundaryField()[patchi]);
 101
 102                 Info<< "    Integral of " << fieldName << " over patch "
 103                     << patchName << '[' << patchi << ']' << " = "
 104                     << sumField << nl;
 105             }
 106             else
 107             {
 108                 FatalError
 109                     << "Only possible to integrate volScalarFields "
 110                     << "and surfaceScalarFields" << nl << exit(FatalError);
 111             }
 112         }
 113         else
 114         {
 115             Info<< "    No field " << fieldName << endl;
 116         }
 117
 118         Info<< endl;
 119     }
 120
 121     Info<< "End\n" << endl;
 122
 123     return 0;
 124 }
 125
 126
 127 // ************************************************************************* //