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111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "Kmesh.H"
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#include "polyMesh.H"
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#include "volFields.H"
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#include "mathematicalConstants.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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//! @cond fileScope
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inline label rep
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(
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const label i,
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const label j,
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const label k,
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const labelList& nn
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)
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{
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return (k + j*nn[2] + i*nn[1]*nn[2]);
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}
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//! @endcond
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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// from fvMesh
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Foam::Kmesh::Kmesh(const fvMesh& mesh)
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:
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vectorField(mesh.V().size()),
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NN(vector::dim)
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{
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boundBox box = mesh.bounds();
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L = box.span();
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vector cornerCellCentre = ::Foam::max(mesh.C().internalField());
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vector cellL = 2*(box.max() - cornerCellCentre);
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vector rdeltaByL;
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label nTot = 1;
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label i;
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forAll(NN, i)
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{
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NN[i] = label(L[i]/cellL[i] + 0.5);
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nTot *= NN[i];
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if (NN[i] > 1)
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{
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L[i] -= cellL[i];
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}
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rdeltaByL[i] = NN[i]/(L[i]*L[i]);
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}
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if (nTot != mesh.nCells())
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{
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FatalErrorIn("Kmesh::Kmesh(const fvMesh& mesh)")
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<< "calculated number of cells is incorrect"
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<< abort(FatalError);
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}
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for (i=0; i<NN[0]; i++)
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{
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scalar k1 = (i - NN[0]/2)*constant::mathematical::twoPi/L[0];
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for (label j=0; j<NN[1]; j++)
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{
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scalar k2 = (j - NN[1]/2)*constant::mathematical::twoPi/L[1];
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for (label k=0; k<NN[2]; k++)
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{
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scalar k3 = (k - NN[2]/2)*constant::mathematical::twoPi/L[2];
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(*this)[rep(i, j, k, NN)] = vector(k1, k2, k3);
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}
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}
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}
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Kmax = mag((*this)[rep(NN[0]-1, NN[1]-1, NN[2]-1, NN)]);
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}
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// ************************************************************************* //
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