src/finiteVolume/interpolation/volPointInterpolation/volPointInterpolation.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
   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 \*---------------------------------------------------------------------------*/
  26
  27 #include "volPointInterpolation.H"
  28 #include "fvMesh.H"
  29 #include "volFields.H"
  30 #include "pointFields.H"
  31 #include "demandDrivenData.H"
  32 #include "coupledPointPatchFields.H"
  33 #include "pointConstraint.H"
  34
  35 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  36
  37 namespace Foam
  38 {
  39
  40 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  41
  42 defineTypeNameAndDebug(volPointInterpolation, 0);
  43
  44
  45 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
  46
  47 void volPointInterpolation::makeWeights()
  48 {
  49     if (debug)
  50     {
  51         Info<< "volPointInterpolation::makeWeights() : "
  52             << "constructing weighting factors"
  53             << endl;
  54     }
  55
  56     const pointField& points = mesh().points();
  57     const labelListList& pointCells = mesh().pointCells();
  58     const vectorField& cellCentres = mesh().cellCentres();
  59
  60     // Allocate storage for weighting factors
  61     pointWeights_.clear();
  62     pointWeights_.setSize(points.size());
  63
  64     forAll(pointWeights_, pointi)
  65     {
  66         pointWeights_[pointi].setSize(pointCells[pointi].size());
  67     }
  68
  69     pointScalarField sumWeights
  70     (
  71         IOobject
  72         (
  73             "volPointSumWeights",
  74             mesh().polyMesh::instance(),
  75             mesh()
  76         ),
  77         pointMesh::New(mesh()),
  78         dimensionedScalar("zero", dimless, 0)
  79     );
  80
  81     // Calculate inverse distances between cell centres and points
  82     // and store in weighting factor array
  83     forAll(points, pointi)
  84     {
  85         scalarList& pw = pointWeights_[pointi];
  86         const labelList& pcp = pointCells[pointi];
  87
  88         forAll(pcp, pointCelli)
  89         {
  90             pw[pointCelli] =
  91                 1.0/mag(points[pointi] - cellCentres[pcp[pointCelli]]);
  92
  93             sumWeights[pointi] += pw[pointCelli];
  94         }
  95     }
  96
  97     forAll(sumWeights.boundaryField(), patchi)
  98     {
  99         if (sumWeights.boundaryField()[patchi].coupled())
 100         {
 101             refCast<coupledPointPatchScalarField>
 102                 (sumWeights.boundaryField()[patchi]).initSwapAdd
 103                 (
 104                     sumWeights.internalField()
 105                 );
 106         }
 107     }
 108
 109     forAll(sumWeights.boundaryField(), patchi)
 110     {
 111         if (sumWeights.boundaryField()[patchi].coupled())
 112         {
 113             refCast<coupledPointPatchScalarField>
 114             (sumWeights.boundaryField()[patchi]).swapAdd
 115             (
 116                 sumWeights.internalField()
 117             );
 118         }
 119     }
 120
 121     forAll(points, pointi)
 122     {
 123         scalarList& pw = pointWeights_[pointi];
 124
 125         forAll(pw, pointCelli)
 126         {
 127             pw[pointCelli] /= sumWeights[pointi];
 128         }
 129     }
 130
 131     if (debug)
 132     {
 133         Info<< "volPointInterpolation::makeWeights() : "
 134             << "finished constructing weighting factors"
 135             << endl;
 136     }
 137 }
 138
 139
 140 // * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * * //
 141
 142 volPointInterpolation::volPointInterpolation(const fvMesh& vm)
 143 :
 144     MeshObject<fvMesh, volPointInterpolation>(vm),
 145     boundaryInterpolator_(vm)
 146 {
 147     updateMesh();
 148 }
 149
 150
 151 // * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * * //
 152
 153 volPointInterpolation::~volPointInterpolation()
 154 {}
 155
 156
 157 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 158
 159 void volPointInterpolation::updateMesh()
 160 {
 161     makeWeights();
 162     boundaryInterpolator_.updateMesh();
 163 }
 164
 165
 166 bool volPointInterpolation::movePoints()
 167 {
 168     makeWeights();
 169     boundaryInterpolator_.movePoints();
 170
 171     return true;
 172 }
 173
 174
 175 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 176
 177 } // End namespace Foam
 178
 179 // ************************************************************************* //