src/postProcessing/foamCalcFunctions/field/randomise/writeRandomField.C

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   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
  13     the Free Software Foundation, either version 3 of the License, or
  14     (at your option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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  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, see <http://www.gnu.org/licenses/>.
  23
  24 \*---------------------------------------------------------------------------*/
  25
  26 template <class Type>
  27 void Foam::calcTypes::randomise::writeRandomField
  28 (
  29     const IOobject& header,
  30     const scalar pertMag,
  31     Random& rand,
  32     const fvMesh& mesh,
  33     bool& processed
  34 )
  35 {
  36     typedef GeometricField<Type, fvPatchField, volMesh> fieldType;
  37
  38     if (header.headerClassName() == fieldType::typeName)
  39     {
  40         Info<< "    Reading " << header.name() << endl;
  41         fieldType field(header, mesh);
  42
  43         forAll(field, cellI)
  44         {
  45             Type rndPert;
  46             rand.randomise(rndPert);
  47             rndPert = 2.0*rndPert - pTraits<Type>::one;
  48             rndPert /= mag(rndPert);
  49             field[cellI] += pertMag*rndPert;
  50         }
  51
  52         fieldType randomisedField
  53         (
  54             IOobject
  55             (
  56                 header.name() + "Random",
  57                 mesh.time().timeName(),
  58                 mesh,
  59                 IOobject::NO_READ
  60             ),
  61             field
  62         );
  63
  64         Info<< "    Writing " << header.name() << "Random" << endl;
  65         randomisedField.write();
  66
  67         processed = true;
  68     }
  69 }
  70
  71
  72 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //