89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | foam-extend: Open Source CFD
|
|
\\ / O peration | Version: 4.1
|
|
\\ / A nd | Web: http://www.foam-extend.org
|
|
\\/ M anipulation | For copyright notice see file Copyright
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of foam-extend.
|
|
|
|
foam-extend is free software: you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by the
|
|
Free Software Foundation, either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
foam-extend is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "GidaspowSchillerNaumann.H"
|
|
#include "addToRunTimeSelectionTable.H"
|
|
|
|
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
|
|
|
|
namespace Foam
|
|
{
|
|
defineTypeNameAndDebug(GidaspowSchillerNaumann, 0);
|
|
|
|
addToRunTimeSelectionTable
|
|
(
|
|
dragModel,
|
|
GidaspowSchillerNaumann,
|
|
dictionary
|
|
);
|
|
}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
|
|
|
|
Foam::GidaspowSchillerNaumann::GidaspowSchillerNaumann
|
|
(
|
|
const dictionary& interfaceDict,
|
|
const volScalarField& alpha,
|
|
const phaseModel& phasea,
|
|
const phaseModel& phaseb
|
|
)
|
|
:
|
|
dragModel(interfaceDict, alpha, phasea, phaseb)
|
|
{}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
|
|
|
|
Foam::GidaspowSchillerNaumann::~GidaspowSchillerNaumann()
|
|
{}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
|
|
|
|
Foam::tmp<Foam::volScalarField> Foam::GidaspowSchillerNaumann::K
|
|
(
|
|
const volScalarField& Ur
|
|
) const
|
|
{
|
|
volScalarField beta = max(scalar(1) - alpha_, scalar(1e-6));
|
|
volScalarField bp = pow(beta, -2.65);
|
|
|
|
volScalarField Re = max(beta*Ur*phasea_.d()/phaseb_.nu(), scalar(1.0e-3));
|
|
volScalarField Cds = 24.0*(scalar(1) + 0.15*pow(Re, 0.687))/Re;
|
|
|
|
forAll(Re, celli)
|
|
{
|
|
if(Re[celli] > 1000.0)
|
|
{
|
|
Cds[celli] = 0.44;
|
|
}
|
|
}
|
|
|
|
return 0.75*Cds*phaseb_.rho()*Ur*bp/phasea_.d();
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|