src/sampling/probes/patchProbes.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 2010-2011 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
  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
  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, see <http://www.gnu.org/licenses/>.
  23
  24 \*---------------------------------------------------------------------------*/
  25
  26 #include "patchProbes.H"
  27 #include "volFields.H"
  28 #include "IOmanip.H"
  29 // For 'nearInfo' helper class only
  30 #include "directMappedPatchBase.H"
  31 #include "meshSearch.H"
  32 #include "treeBoundBox.H"
  33 #include "treeDataFace.H"
  34
  35 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  36
  37 namespace Foam
  38 {
  39     defineTypeNameAndDebug(patchProbes, 0);
  40 }
  41
  42 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
  43
  44 void Foam::patchProbes::findElements(const fvMesh& mesh)
  45 {
  46
  47     const polyBoundaryMesh& bm = mesh.boundaryMesh();
  48
  49     label patchI = bm.findPatchID(patchName_);
  50
  51     if (patchI == -1)
  52     {
  53         FatalErrorIn
  54         (
  55             " Foam::patchProbes::findElements(const fvMesh&)"
  56         )   << " Unknown patch name "
  57             << patchName_ << endl
  58             << exit(FatalError);
  59     }
  60
  61
  62     // All the info for nearest. Construct to miss
  63     List<directMappedPatchBase::nearInfo> nearest(probeLocations_.size());
  64
  65     const polyPatch& pp = bm[patchI];
  66
  67     if (pp.size() > 0)
  68     {
  69         labelList bndFaces(pp.size());
  70         forAll(bndFaces, i)
  71         {
  72             bndFaces[i] =  pp.start() + i;
  73         }
  74
  75         treeBoundBox overallBb(pp.points());
  76         Random rndGen(123456);
  77         overallBb = overallBb.extend(rndGen, 1E-4);
  78         overallBb.min() -= point(ROOTVSMALL, ROOTVSMALL, ROOTVSMALL);
  79         overallBb.max() += point(ROOTVSMALL, ROOTVSMALL, ROOTVSMALL);
  80
  81         const indexedOctree<treeDataFace> boundaryTree
  82         (
  83             treeDataFace    // all information needed to search faces
  84             (
  85                 false,                      // do not cache bb
  86                 mesh,
  87                 bndFaces                    // patch faces only
  88             ),
  89             overallBb,                      // overall search domain
  90             8,                              // maxLevel
  91             10,                             // leafsize
  92             3.0                             // duplicity
  93         );
  94
  95
  96         if (elementList_.empty())
  97         {
  98             elementList_.setSize(probeLocations_.size());
  99
 100             // Octree based search engine
 101             //meshSearch meshSearchEngine(mesh, false);
 102
 103             forAll(probeLocations_, probeI)
 104             {
 105                 const point sample = probeLocations_[probeI];
 106
 107                 scalar span = boundaryTree.bb().mag();
 108
 109                 pointIndexHit info = boundaryTree.findNearest
 110                 (
 111                     sample,
 112                     Foam::sqr(span)
 113                 );
 114
 115                 if (!info.hit())
 116                 {
 117                     info = boundaryTree.findNearest
 118                     (
 119                         sample,
 120                         Foam::sqr(GREAT)
 121                     );
 122                 }
 123
 124                 label faceI = boundaryTree.shapes().faceLabels()[info.index()];
 125
 126                 const label patchi = bm.whichPatch(faceI);
 127
 128                 if (isA<emptyPolyPatch>(bm[patchi]))
 129                 {
 130                     WarningIn
 131                     (
 132                         " Foam::patchProbes::findElements(const fvMesh&)"
 133                     )
 134                     << " The sample point: " << sample
 135                     << " belongs to " << patchi
 136                     << " which is an empty patch. This is not permitted. "
 137                     << " This sample will not be included "
 138                     << endl;
 139                 }
 140                 else
 141                 {
 142                     const point& fc = mesh.faceCentres()[faceI];
 143
 144                     directMappedPatchBase::nearInfo sampleInfo;
 145
 146                     sampleInfo.first() = pointIndexHit
 147                     (
 148                         true,
 149                         fc,
 150                         faceI
 151                     );
 152
 153                     sampleInfo.second().first() = magSqr(fc-sample);
 154                     sampleInfo.second().second() = Pstream::myProcNo();
 155
 156                     nearest[probeI]= sampleInfo;
 157                 }
 158             }
 159         }
 160     }
 161     // Find nearest.
 162     Pstream::listCombineGather(nearest, directMappedPatchBase::nearestEqOp());
 163     Pstream::listCombineScatter(nearest);
 164
 165     if (debug)
 166     {
 167         Info<< "patchProbes::findElements" << " : " << endl;
 168         forAll(nearest, sampleI)
 169         {
 170             label procI = nearest[sampleI].second().second();
 171             label localI = nearest[sampleI].first().index();
 172
 173             Info<< "    " << sampleI << " coord:"<< probeLocations_[sampleI]
 174                 << " found on processor:" << procI
 175                 << " in local cell/face:" << localI
 176                 << " with cc:" << nearest[sampleI].first().rawPoint()
 177                 << " in patch : "<< pp.name() << endl;
 178         }
 179     }
 180
 181     // Check if all patchProbes have been found.
 182     forAll(probeLocations_, sampleI)
 183     {
 184         label localI = -1;
 185         if (nearest[sampleI].second().second() == Pstream::myProcNo())
 186         {
 187             localI = nearest[sampleI].first().index();
 188         }
 189
 190         if (elementList_.empty())
 191         {
 192              elementList_.setSize(probeLocations_.size());
 193         }
 194
 195         elementList_[sampleI] = localI;
 196     }
 197 }
 198
 199
 200
 201 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 202
 203 Foam::patchProbes::patchProbes
 204 (
 205     const word& name,
 206     const objectRegistry& obr,
 207     const dictionary& dict,
 208     const bool loadFromFiles
 209 )
 210 :
 211     probes(name, obr, dict, loadFromFiles)
 212 {
 213     read(dict);
 214 }
 215
 216
 217 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 218
 219 Foam::patchProbes::~patchProbes()
 220 {}
 221
 222
 223 void Foam::patchProbes::write()
 224 {
 225     if (probeLocations_.size() && checkFieldTypes())
 226     {
 227         sampleAndWrite(scalarFields_);
 228         sampleAndWrite(vectorFields_);
 229         sampleAndWrite(sphericalTensorFields_);
 230         sampleAndWrite(symmTensorFields_);
 231         sampleAndWrite(tensorFields_);
 232     }
 233 }
 234
 235 void Foam::patchProbes::read(const dictionary& dict)
 236 {
 237     dict.lookup("patchName") >> patchName_;
 238     probes::read(dict);
 239 }
 240
 241
 242 // ************************************************************************* //