applications/solvers/multiphase/twoPhaseEulerFoam/kineticTheoryModels/viscosityModel/HrenyaSinclair/HrenyaSinclairViscosity.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
   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 "HrenyaSinclairViscosity.H"
  27 #include "mathematicalConstants.H"
  28 #include "addToRunTimeSelectionTable.H"
  29
  30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  31
  32 namespace Foam
  33 {
  34 namespace kineticTheoryModels
  35 {
  36     defineTypeNameAndDebug(HrenyaSinclairViscosity, 0);
  37
  38     addToRunTimeSelectionTable
  39     (
  40         viscosityModel,
  41         HrenyaSinclairViscosity,
  42         dictionary
  43     );
  44 }
  45 }
  46
  47 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  48
  49 Foam::kineticTheoryModels::HrenyaSinclairViscosity::HrenyaSinclairViscosity
  50 (
  51     const dictionary& dict
  52 )
  53 :
  54     viscosityModel(dict),
  55     coeffsDict_(dict.subDict(typeName + "Coeffs")),
  56     L_(coeffsDict_.lookup("L"))
  57 {}
  58
  59
  60 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
  61
  62 Foam::kineticTheoryModels::HrenyaSinclairViscosity::~HrenyaSinclairViscosity()
  63 {}
  64
  65
  66 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  67
  68 Foam::tmp<Foam::volScalarField>
  69 Foam::kineticTheoryModels::HrenyaSinclairViscosity::mua
  70 (
  71     const volScalarField& alpha,
  72     const volScalarField& Theta,
  73     const volScalarField& g0,
  74     const dimensionedScalar& rhoa,
  75     const dimensionedScalar& da,
  76     const dimensionedScalar& e
  77 ) const
  78 {
  79     const scalar sqrtPi = sqrt(constant::mathematical::pi);
  80
  81     volScalarField lamda
  82     (
  83         scalar(1) + da/(6.0*sqrt(2.0)*(alpha + scalar(1.0e-5)))/L_
  84     );
  85
  86     return rhoa*da*sqrt(Theta)*
  87     (
  88         (4.0/5.0)*sqr(alpha)*g0*(1.0 + e)/sqrtPi
  89       + (1.0/15.0)*sqrtPi*g0*(1.0 + e)*(3.0*e - 1)*sqr(alpha)/(3.0-e)
  90       + (1.0/6.0)*sqrtPi*alpha*(0.5*lamda + 0.25*(3.0*e - 1.0))
  91        /(0.5*(3.0 - e)*lamda)
  92       + (10/96.0)*sqrtPi/((1.0 + e)*0.5*(3.0 - e)*g0*lamda)
  93     );
  94 }
  95
  96
  97 // ************************************************************************* //