applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/frictionalStressModel/JohnsonJackson/JohnsonJacksonFrictionalStress.C

   1 /*---------------------------------------------------------------------------*\
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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.
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  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
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  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 "JohnsonJacksonFrictionalStress.H"
  28 #include "addToRunTimeSelectionTable.H"
  29
  30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  31
  32 namespace Foam
  33 {
  34     defineTypeNameAndDebug(JohnsonJacksonFrictionalStress, 0);
  35
  36     addToRunTimeSelectionTable
  37     (
  38         frictionalStressModel,
  39         JohnsonJacksonFrictionalStress,
  40         dictionary
  41     );
  42 }
  43
  44
  45 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  46
  47 Foam::JohnsonJacksonFrictionalStress::JohnsonJacksonFrictionalStress
  48 (
  49     const dictionary& dict
  50 )
  51 :
  52     frictionalStressModel(dict)
  53 {}
  54
  55
  56 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
  57
  58 Foam::JohnsonJacksonFrictionalStress::~JohnsonJacksonFrictionalStress()
  59 {}
  60
  61
  62 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  63
  64 Foam::tmp<Foam::volScalarField> Foam::JohnsonJacksonFrictionalStress::
  65 frictionalPressure
  66 (
  67     const volScalarField& alpha,
  68     const dimensionedScalar& alphaMinFriction,
  69     const dimensionedScalar& alphaMax,
  70     const dimensionedScalar& Fr,
  71     const dimensionedScalar& eta,
  72     const dimensionedScalar& p
  73 ) const
  74 {
  75
  76     return
  77         Fr*pow(max(alpha - alphaMinFriction, scalar(0)), eta)
  78        /pow(max(alphaMax - alpha, scalar(5.0e-2)), p);
  79 }
  80
  81
  82 Foam::tmp<Foam::volScalarField> Foam::JohnsonJacksonFrictionalStress::
  83 frictionalPressurePrime
  84 (
  85     const volScalarField& alpha,
  86     const dimensionedScalar& alphaMinFriction,
  87     const dimensionedScalar& alphaMax,
  88     const dimensionedScalar& Fr,
  89     const dimensionedScalar& eta,
  90     const dimensionedScalar& p
  91 ) const
  92 {
  93     return Fr*
  94     (
  95         eta*pow(max(alpha - alphaMinFriction, scalar(0)), eta - 1.0)
  96        *(alphaMax-alpha) + p*pow(max(alpha - alphaMinFriction, scalar(0)), eta)
  97     )/pow(max(alphaMax - alpha, scalar(5.0e-2)), p + 1.0);
  98 }
  99
 100
 101 Foam::tmp<Foam::volScalarField> Foam::JohnsonJacksonFrictionalStress::muf
 102 (
 103     const volScalarField& alpha,
 104     const dimensionedScalar& alphaMax,
 105     const volScalarField& pf,
 106     const volTensorField& D,
 107     const dimensionedScalar& phi
 108 ) const
 109 {
 110     return dimensionedScalar("0.5", dimTime, 0.5)*pf*sin(phi);
 111 }
 112
 113
 114 // ************************************************************************* //