src/finiteVolume/interpolation/surfaceInterpolation/limitedSchemes/LimitedScheme/NVDVTVDV.H

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
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   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 Class
  26     Foam::NVDVTVDV
  27
  28 Description
  29     Foam::NVDVTVDV
  30
  31 \*---------------------------------------------------------------------------*/
  32
  33 #ifndef NVDVTVDV_H
  34 #define NVDVTVDV_H
  35
  36 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  37
  38 namespace Foam
  39 {
  40
  41 /*---------------------------------------------------------------------------*\
  42                            Class LimitedScheme Declaration
  43 \*---------------------------------------------------------------------------*/
  44
  45 class NVDVTVDV
  46 {
  47
  48 public:
  49
  50     typedef vector phiType;
  51     typedef tensor gradPhiType;
  52
  53     // Null Constructor
  54
  55         NVDVTVDV()
  56         {}
  57
  58
  59     // Member Functions
  60
  61         scalar phict
  62         (
  63             const scalar faceFlux,
  64             const vector& phiP,
  65             const vector& phiN,
  66             const tensor& gradcP,
  67             const tensor& gradcN,
  68             const vector& d
  69         ) const
  70         {
  71             vector gradfV = phiN - phiP;
  72             scalar gradf = gradfV & gradfV;
  73
  74             scalar gradcf;
  75
  76             if (faceFlux > 0)
  77             {
  78                 gradcf = gradfV & (d & gradcP);
  79             }
  80             else
  81             {
  82                 gradcf = gradfV & (d & gradcN);
  83             }
  84
  85             // Stabilise for division
  86             gradcf = stabilise(gradcf, VSMALL);
  87
  88             return 1 - 0.5*gradf/gradcf;
  89         }
  90
  91
  92         scalar r
  93         (
  94             const scalar faceFlux,
  95             const vector& phiP,
  96             const vector& phiN,
  97             const tensor& gradcP,
  98             const tensor& gradcN,
  99             const vector& d
 100         ) const
 101         {
 102             vector gradfV = phiN - phiP;
 103             scalar gradf = gradfV & gradfV;
 104
 105             scalar gradcf;
 106
 107             if (faceFlux > 0)
 108             {
 109                 gradcf = gradfV & (d & gradcP);
 110             }
 111             else
 112             {
 113                 gradcf = gradfV & (d & gradcN);
 114             }
 115
 116             // Stabilise for division
 117             gradf = stabilise(gradf, VSMALL);
 118
 119             return 2*(gradcf/gradf) - 1;
 120         }
 121 };
 122
 123
 124 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 125
 126 } // End namespace Foam
 127
 128 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 129
 130 #endif
 131
 132 // ************************ vim: set sw=4 sts=4 et: ************************ //