src/fvMotionSolver/fvMotionSolvers/displacement/displacementFvMotionSolver/displacementFvMotionSolver.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 "displacementFvMotionSolver.H"
  28 #include "addToRunTimeSelectionTable.H"
  29 #include "mapPolyMesh.H"
  30
  31 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  32
  33 namespace Foam
  34 {
  35     defineTypeNameAndDebug(displacementFvMotionSolver, 0);
  36 }
  37
  38
  39 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  40
  41 Foam::displacementFvMotionSolver::displacementFvMotionSolver
  42 (
  43     const polyMesh& mesh,
  44     Istream&
  45 )
  46 :
  47     fvMotionSolver(mesh),
  48     points0_
  49     (
  50         pointIOField
  51         (
  52             IOobject
  53             (
  54                 "points",
  55                 mesh.time().constant(),
  56                 polyMesh::meshSubDir,
  57                 mesh,
  58                 IOobject::MUST_READ,
  59                 IOobject::NO_WRITE,
  60                 false
  61             )
  62         )
  63     )
  64 {
  65     if (points0_.size() != mesh.nPoints())
  66     {
  67         FatalErrorIn
  68         (
  69             "displacementFvMotionSolver::displacementFvMotionSolver\n"
  70             "(\n"
  71             "    const polyMesh&,\n"
  72             "    Istream&\n"
  73             ")"
  74         )   << "Number of points in mesh " << mesh.nPoints()
  75             << " differs from number of points " << points0_.size()
  76             << " read from file "
  77             <<
  78                 IOobject
  79                 (
  80                     "points",
  81                     mesh.time().constant(),
  82                     polyMesh::meshSubDir,
  83                     mesh,
  84                     IOobject::MUST_READ,
  85                     IOobject::NO_WRITE,
  86                     false
  87                 ).filePath()
  88             << exit(FatalError);
  89     }
  90 }
  91
  92
  93 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
  94
  95 Foam::displacementFvMotionSolver::~displacementFvMotionSolver()
  96 {}
  97
  98
  99 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 100
 101 void Foam::displacementFvMotionSolver::updateMesh(const mapPolyMesh& mpm)
 102 {
 103     fvMotionSolver::updateMesh(mpm);
 104
 105     // Map points0_. Bit special since we somehow have to come up with
 106     // a sensible points0 position for introduced points.
 107     // Find out scaling between points0 and current points
 108
 109     // Get the new points either from the map or the mesh
 110     const pointField& points =
 111     (
 112         mpm.hasMotionPoints()
 113       ? mpm.preMotionPoints()
 114       : fvMesh_.points()
 115     );
 116
 117     // Note: boundBox does reduce
 118     const vector span0 = boundBox(points0_).span();
 119     const vector span  = boundBox(points).span();
 120
 121     vector scaleFactors(cmptDivide(span0, span));
 122
 123     pointField newPoints0(mpm.pointMap().size());
 124
 125     forAll(newPoints0, pointI)
 126     {
 127         label oldPointI = mpm.pointMap()[pointI];
 128
 129         if (oldPointI >= 0)
 130         {
 131             label masterPointI = mpm.reversePointMap()[oldPointI];
 132
 133             if (masterPointI == pointI)
 134             {
 135                 newPoints0[pointI] = points0_[oldPointI];
 136             }
 137             else
 138             {
 139                 // New point. Assume motion is scaling.
 140                 newPoints0[pointI] = points0_[oldPointI] + cmptMultiply
 141                 (
 142                     scaleFactors,
 143                     points[pointI]-points[masterPointI]
 144                 );
 145             }
 146         }
 147         else
 148         {
 149             FatalErrorIn
 150             (
 151                 "displacementLaplacianFvMotionSolver::updateMesh"
 152                 "(const mapPolyMesh& mpm)"
 153             )   << "Cannot work out coordinates of introduced vertices."
 154                 << " New vertex " << pointI << " at coordinate "
 155                 << points[pointI] << exit(FatalError);
 156         }
 157     }
 158     points0_.transfer(newPoints0);
 159 }
 160
 161
 162 // ************************************************************************* //