applications/utilities/postProcessing/patch/patchIntegrate/patchIntegrate.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
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   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright held by original author
   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 #include "cyclicPolyPatch.H"
  35
  36 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  37 // Main program:
  38
  39 int main(int argc, char *argv[])
  40 {
  41 #   include "addRegionOption.H"
  42     timeSelector::addOptions();
  43     argList::validArgs.append("fieldName");
  44     argList::validArgs.append("patchName");
  45 #   include "setRootCase.H"
  46 #   include "createTime.H"
  47     instantList timeDirs = timeSelector::select0(runTime, args);
  48 #   include "createNamedMesh.H"
  49
  50     word fieldName(args.additionalArgs()[0]);
  51     word patchName(args.additionalArgs()[1]);
  52
  53     forAll(timeDirs, timeI)
  54     {
  55         runTime.setTime(timeDirs[timeI], timeI);
  56         Info<< "Time = " << runTime.timeName() << endl;
  57
  58         IOobject fieldHeader
  59         (
  60             fieldName,
  61             runTime.timeName(),
  62             mesh,
  63             IOobject::MUST_READ
  64         );
  65
  66         // Check field exists
  67         if (fieldHeader.headerOk())
  68         {
  69             mesh.readUpdate();
  70
  71             label patchi = mesh.boundaryMesh().findPatchID(patchName);
  72             if (patchi < 0)
  73             {
  74                 FatalError
  75                     << "Unable to find patch " << patchName << nl
  76                     << exit(FatalError);
  77             }
  78
  79             // Give patch area
  80             if (isA<cyclicPolyPatch>(mesh.boundaryMesh()[patchi]))
  81             {
  82                 Info<< "    Cyclic patch vector area: " << nl;
  83                 label nFaces = mesh.boundaryMesh()[patchi].size();
  84                 vector sum1 = vector::zero;
  85                 vector sum2 = vector::zero;
  86                 for (label i=0; i<nFaces/2; i++)
  87                 {
  88                     sum1 += mesh.Sf().boundaryField()[patchi][i];
  89                     sum2 += mesh.Sf().boundaryField()[patchi][i+nFaces/2];
  90                 }
  91                 reduce(sum1, sumOp<vector>());
  92                 reduce(sum2, sumOp<vector>());
  93                 Info<< "    - half 1 = " << sum1 << ", " << mag(sum1) << nl
  94                     << "    - half 2 = " << sum2 << ", " << mag(sum2) << nl
  95                     << "    - total  = " << (sum1 + sum2) << ", "
  96                     << mag(sum1 + sum2) << endl;
  97                 Info<< "    Cyclic patch area magnitude = "
  98                     << gSum(mesh.magSf().boundaryField()[patchi])/2.0 << endl;
  99             }
 100             else
 101             {
 102                 Info<< "    Area vector of patch "
 103                     << patchName << '[' << patchi << ']' << " = "
 104                     << gSum(mesh.Sf().boundaryField()[patchi]) << endl;
 105                 Info<< "    Area magnitude of patch "
 106                     << patchName << '[' << patchi << ']' << " = "
 107                     << gSum(mesh.magSf().boundaryField()[patchi]) << endl;
 108             }
 109
 110             // Read field and calc integral
 111             if (fieldHeader.headerClassName() == volScalarField::typeName)
 112             {
 113                 Info<< "    Reading " << volScalarField::typeName << " "
 114                     << fieldName << endl;
 115
 116                 volScalarField field(fieldHeader, mesh);
 117
 118                 Info<< "    Integral of " << fieldName
 119                     << " over vector area of patch "
 120                     << patchName << '[' << patchi << ']' << " = "
 121                     << gSum
 122                        (
 123                            mesh.Sf().boundaryField()[patchi]
 124                           *field.boundaryField()[patchi]
 125                        )
 126                     << nl;
 127
 128                 Info<< "    Integral of " << fieldName
 129                     << " over area magnitude of patch "
 130                     << patchName << '[' << patchi << ']' << " = "
 131                     << gSum
 132                        (
 133                            mesh.magSf().boundaryField()[patchi]
 134                           *field.boundaryField()[patchi]
 135                        )
 136                     << nl;
 137             }
 138             else if
 139             (
 140                 fieldHeader.headerClassName() == surfaceScalarField::typeName
 141             )
 142             {
 143                 Info<< "    Reading " << surfaceScalarField::typeName << " "
 144                     << fieldName << endl;
 145
 146                 surfaceScalarField field(fieldHeader, mesh);
 147                 scalar sumField = gSum(field.boundaryField()[patchi]);
 148
 149                 Info<< "    Integral of " << fieldName << " over patch "
 150                     << patchName << '[' << patchi << ']' << " = "
 151                     << sumField << nl;
 152             }
 153             else
 154             {
 155                 FatalError
 156                     << "Only possible to integrate "
 157                     << volScalarField::typeName << "s "
 158                     << "and " << surfaceScalarField::typeName << "s"
 159                     << nl << exit(FatalError);
 160             }
 161         }
 162         else
 163         {
 164             Info<< "    No field " << fieldName << endl;
 165         }
 166
 167         Info<< endl;
 168     }
 169
 170     Info<< "End\n" << endl;
 171
 172     return 0;
 173 }
 174
 175
 176 // ************************************************************************* //