applications/utilities/postProcessing/patch/patchIntegrate/patchIntegrate.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     patchIntegrate
  26
  27 Description
  28     Calculates the integral of the specified field over the specified patch.
  29
  30 \*---------------------------------------------------------------------------*/
  31
  32 #include "fvCFD.H"
  33 #include "cyclicPolyPatch.H"
  34
  35 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  36 // Main program:
  37
  38 int main(int argc, char *argv[])
  39 {
  40 #   include "addRegionOption.H"
  41     timeSelector::addOptions();
  42     argList::validArgs.append("fieldName");
  43     argList::validArgs.append("patchName");
  44 #   include "setRootCase.H"
  45 #   include "createTime.H"
  46     instantList timeDirs = timeSelector::select0(runTime, args);
  47 #   include "createNamedMesh.H"
  48
  49     word fieldName(args.additionalArgs()[0]);
  50     word patchName(args.additionalArgs()[1]);
  51
  52     forAll(timeDirs, timeI)
  53     {
  54         runTime.setTime(timeDirs[timeI], timeI);
  55         Info<< "Time = " << runTime.timeName() << endl;
  56
  57         IOobject fieldHeader
  58         (
  59             fieldName,
  60             runTime.timeName(),
  61             mesh,
  62             IOobject::MUST_READ
  63         );
  64
  65         // Check field exists
  66         if (fieldHeader.headerOk())
  67         {
  68             mesh.readUpdate();
  69
  70             label patchi = mesh.boundaryMesh().findPatchID(patchName);
  71             if (patchi < 0)
  72             {
  73                 FatalError
  74                     << "Unable to find patch " << patchName << nl
  75                     << exit(FatalError);
  76             }
  77
  78             // Give patch area
  79             if (isA<cyclicPolyPatch>(mesh.boundaryMesh()[patchi]))
  80             {
  81                 Info<< "    Cyclic patch vector area: " << nl;
  82                 label nFaces = mesh.boundaryMesh()[patchi].size();
  83                 vector sum1 = vector::zero;
  84                 vector sum2 = vector::zero;
  85                 for (label i=0; i<nFaces/2; i++)
  86                 {
  87                     sum1 += mesh.Sf().boundaryField()[patchi][i];
  88                     sum2 += mesh.Sf().boundaryField()[patchi][i+nFaces/2];
  89                 }
  90                 reduce(sum1, sumOp<vector>());
  91                 reduce(sum2, sumOp<vector>());
  92                 Info<< "    - half 1 = " << sum1 << ", " << mag(sum1) << nl
  93                     << "    - half 2 = " << sum2 << ", " << mag(sum2) << nl
  94                     << "    - total  = " << (sum1 + sum2) << ", "
  95                     << mag(sum1 + sum2) << endl;
  96                 Info<< "    Cyclic patch area magnitude = "
  97                     << gSum(mesh.magSf().boundaryField()[patchi])/2.0 << endl;
  98             }
  99             else
 100             {
 101                 Info<< "    Area vector of patch "
 102                     << patchName << '[' << patchi << ']' << " = "
 103                     << gSum(mesh.Sf().boundaryField()[patchi]) << endl;
 104                 Info<< "    Area magnitude of patch "
 105                     << patchName << '[' << patchi << ']' << " = "
 106                     << gSum(mesh.magSf().boundaryField()[patchi]) << endl;
 107             }
 108
 109             // Read field and calc integral
 110             if (fieldHeader.headerClassName() == volScalarField::typeName)
 111             {
 112                 Info<< "    Reading " << volScalarField::typeName << " "
 113                     << fieldName << endl;
 114
 115                 volScalarField field(fieldHeader, mesh);
 116
 117                 Info<< "    Integral of " << fieldName
 118                     << " over vector area of patch "
 119                     << patchName << '[' << patchi << ']' << " = "
 120                     << gSum
 121                        (
 122                            mesh.Sf().boundaryField()[patchi]
 123                           *field.boundaryField()[patchi]
 124                        )
 125                     << nl;
 126
 127                 Info<< "    Integral of " << fieldName
 128                     << " over area magnitude of patch "
 129                     << patchName << '[' << patchi << ']' << " = "
 130                     << gSum
 131                        (
 132                            mesh.magSf().boundaryField()[patchi]
 133                           *field.boundaryField()[patchi]
 134                        )
 135                     << nl;
 136             }
 137             else if
 138             (
 139                 fieldHeader.headerClassName() == surfaceScalarField::typeName
 140             )
 141             {
 142                 Info<< "    Reading " << surfaceScalarField::typeName << " "
 143                     << fieldName << endl;
 144
 145                 surfaceScalarField field(fieldHeader, mesh);
 146                 scalar sumField = gSum(field.boundaryField()[patchi]);
 147
 148                 Info<< "    Integral of " << fieldName << " over patch "
 149                     << patchName << '[' << patchi << ']' << " = "
 150                     << sumField << nl;
 151             }
 152             else
 153             {
 154                 FatalError
 155                     << "Only possible to integrate "
 156                     << volScalarField::typeName << "s "
 157                     << "and " << surfaceScalarField::typeName << "s"
 158                     << nl << exit(FatalError);
 159             }
 160         }
 161         else
 162         {
 163             Info<< "    No field " << fieldName << endl;
 164         }
 165
 166         Info<< endl;
 167     }
 168
 169     Info<< "End\n" << endl;
 170
 171     return 0;
 172 }
 173
 174
 175 // ************************************************************************* //