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[OpenFOAM-2.0.x.git] / applications / solvers / multiphase / twoPhaseEulerFoam / kineticTheoryModels / viscosityModel / Syamlal / SyamlalViscosity.C
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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.
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.
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.
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/>.
24 \*---------------------------------------------------------------------------*/
26 #include "SyamlalViscosity.H"
27 #include "mathematicalConstants.H"
28 #include "addToRunTimeSelectionTable.H"
30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
32 namespace Foam
34 namespace kineticTheoryModels
36     defineTypeNameAndDebug(SyamlalViscosity, 0);
37     addToRunTimeSelectionTable(viscosityModel, SyamlalViscosity, dictionary);
42 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
44 Foam::kineticTheoryModels::SyamlalViscosity::SyamlalViscosity
46     const dictionary& dict
49     viscosityModel(dict)
53 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
55 Foam::kineticTheoryModels::SyamlalViscosity::~SyamlalViscosity()
59 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
61 Foam::tmp<Foam::volScalarField> Foam::kineticTheoryModels::SyamlalViscosity::mua
63     const volScalarField& alpha,
64     const volScalarField& Theta,
65     const volScalarField& g0,
66     const dimensionedScalar& rhoa,
67     const dimensionedScalar& da,
68     const dimensionedScalar& e
69 ) const
71     const scalar sqrtPi = sqrt(constant::mathematical::pi);
73     return rhoa*da*sqrt(Theta)*
74     (
75         (4.0/5.0)*sqr(alpha)*g0*(1.0 + e)/sqrtPi
76       + (1.0/15.0)*sqrtPi*g0*(1.0 + e)*(3.0*e - 1.0)*sqr(alpha)/(3.0 - e)
77       + (1.0/6.0)*alpha*sqrtPi/(3.0 - e)
78     );
82 // ************************************************************************* //