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functionObjects::randomise: New functionObject to create a field with a random perturbation

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This commit is contained in:
Henry Weller
2016-05-26 15:32:10 +01:00
parent 1940cf8413
commit 9d71c18fcf
5 changed files with 310 additions and 0 deletions
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65
src/postProcessing/functionObjects/field/randomise/randomiseTemplates.C Normal file
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2016 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "volFields.H"
#include "Random.H"
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
template<class Type>
bool Foam::functionObjects::randomise::calcRandomised()
{
typedef GeometricField<Type, fvPatchField, volMesh> VolFieldType;
if (foundObject<VolFieldType>(fieldName_))
{
const VolFieldType& field = lookupObject<VolFieldType>(fieldName_);
resultName_ = fieldName_ + "Random";
tmp<VolFieldType> rfieldt(new VolFieldType(field));
VolFieldType& rfield = rfieldt.ref();
Random rand(1234567);
forAll(field, celli)
{
Type rndPert;
rand.randomise(rndPert);
rndPert = 2.0*rndPert - pTraits<Type>::one;
rndPert /= mag(rndPert);
rfield[celli] += magPerturbation_*rndPert;
}
return store(resultName_, rfieldt);
}
else
{
return false;
}
}
// ************************************************************************* //