src/finiteVolume/fields/fvPatchFields/derived/fan/fanFvPatchFields.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
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   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 "fanFvPatchFields.H"
  28 #include "addToRunTimeSelectionTable.H"
  29 #include "volFields.H"
  30 #include "surfaceFields.H"
  31
  32 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  33
  34 namespace Foam
  35 {
  36     makePatchTypeField(fvPatchScalarField, fanFvPatchScalarField);
  37 }
  38
  39 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  40
  41 //- Specialisation of the jump-condition for the pressure
  42 template<>
  43 void Foam::fanFvPatchField<Foam::scalar>::updateCoeffs()
  44 {
  45     if (updated())
  46     {
  47         return;
  48     }
  49
  50     jump_ = f_[0];
  51
  52     if (f_.size() > 1)
  53     {
  54         const surfaceScalarField& phi =
  55             db().lookupObject<surfaceScalarField>("phi");
  56
  57         const fvsPatchField<scalar>& phip =
  58             patch().patchField<surfaceScalarField, scalar>(phi);
  59
  60         scalarField Un = max
  61         (
  62             scalarField::subField(phip, size()/2)
  63            /scalarField::subField(patch().magSf(), size()/2),
  64             scalar(0)
  65         );
  66
  67         if (phi.dimensions() == dimDensity*dimVelocity*dimArea)
  68         {
  69             Un /=
  70                 scalarField::subField
  71                 (
  72                     patch().lookupPatchField<volScalarField, scalar>("rho"),
  73                     size()/2
  74                 );
  75         }
  76
  77         for(label i=1; i<f_.size(); i++)
  78         {
  79             jump_ += f_[i]*pow(Un, i);
  80         }
  81
  82         jump_ = max(jump_, scalar(0));
  83     }
  84
  85     jumpCyclicFvPatchField<scalar>::updateCoeffs();
  86 }
  87
  88
  89 // ************************************************************************* //