applications/utilities/mesh/generation/cfMesh/generateBoundaryLayers/generateBoundaryLayers.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | cfMesh: A library for mesh generation
   4    \\    /   O peration     |
   5     \\  /    A nd           | Author: Franjo Juretic (franjo.juretic@c-fields.com)
   6      \\/     M anipulation  | Copyright (C) Creative Fields, Ltd.
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of cfMesh.
  10
  11     cfMesh 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     cfMesh 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 cfMesh.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 Description
  25     Generates boundary layers in the existing mesh, based on the settings
  26     given in meshDict. It also performs necessary quality optimisation.
  27
  28 \*---------------------------------------------------------------------------*/
  29
  30 #include "argList.H"
  31 #include "objectRegistry.H"
  32 #include "foamTime.H"
  33 #include "polyMeshGenModifier.H"
  34 #include "meshOptimizer.H"
  35 #include "boundaryLayers.H"
  36 #include "refineBoundaryLayers.H"
  37
  38 using namespace Foam;
  39
  40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  41
  42 void generateLayer
  43 (
  44     polyMeshGen& mesh,
  45     const dictionary& meshDict,
  46     const bool layers2D
  47 )
  48 {
  49     boundaryLayers bl(mesh);
  50
  51     if( layers2D )
  52         bl.activate2DMode();
  53
  54     if( meshDict.found("boundaryLayers") )
  55     {
  56         const dictionary& bndLayers = meshDict.subDict("boundaryLayers");
  57
  58         if( bndLayers.found("nLayers") )
  59         {
  60             const label nLayers = readLabel(bndLayers.lookup("nLayers"));
  61
  62             if( nLayers > 0 )
  63                 bl.addLayerForAllPatches();
  64         }
  65         else if( bndLayers.found("patchBoundaryLayers") )
  66         {
  67             const dictionary& patchLayers =
  68                 bndLayers.subDict("patchBoundaryLayers");
  69             const wordList createLayers = patchLayers.toc();
  70
  71             forAll(createLayers, patchI)
  72                 bl.addLayerForPatch(createLayers[patchI]);
  73         }
  74     }
  75     else
  76     {
  77         bl.addLayerForAllPatches();
  78     }
  79 }
  80
  81 void meshOptimisation(polyMeshGen& mesh)
  82 {
  83     meshOptimizer mOpt(mesh);
  84
  85     mOpt.optimizeMeshFV();
  86     mOpt.optimizeLowQualityFaces();
  87     mOpt.untangleMeshFV();
  88     mOpt.optimizeBoundaryLayer();
  89     mOpt.untangleMeshFV();
  90 }
  91
  92 void layerRefinement(polyMeshGen& mesh, const dictionary& meshDict)
  93 {
  94     if( meshDict.isDict("boundaryLayers") )
  95     {
  96         refineBoundaryLayers refLayers(mesh);
  97
  98         refineBoundaryLayers::readSettings(meshDict, refLayers);
  99
 100         refLayers.refineLayers();
 101
 102         meshOptimizer(mesh).untangleBoundaryLayer();
 103     }
 104 }
 105
 106 int main(int argc, char *argv[])
 107 {
 108     argList::validOptions.insert("2DLayers", "bool");
 109
 110 #   include "setRootCase.H"
 111 #   include "createTime.H"
 112
 113     IOdictionary meshDict
 114     (
 115         IOobject
 116         (
 117             "meshDict",
 118             runTime.system(),
 119             runTime,
 120             IOobject::MUST_READ,
 121             IOobject::NO_WRITE
 122         )
 123     );
 124
 125     //- load the mesh from disk
 126     polyMeshGen pmg(runTime);
 127     pmg.read();
 128
 129     bool is2DLayer(false);
 130     if( args.options().found("2DLayers") )
 131         is2DLayer = true;
 132
 133     //- generate the initial boundary layer
 134     generateLayer(pmg, meshDict, is2DLayer);
 135
 136     //- optimisation of mesh quality
 137     meshOptimisation(pmg);
 138
 139     //- perform layer refinement
 140     layerRefinement(pmg, meshDict);
 141
 142     Info << "Writing mesh" << endl;
 143     pmg.write();
 144
 145     Info << "End\n" << endl;
 146     return 0;
 147 }
 148
 149 // ************************************************************************* //