/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM 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.
OpenFOAM 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 OpenFOAM. If not, see .
\*---------------------------------------------------------------------------*/
#include "SchillerNaumann.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(SchillerNaumann, 0);
addToRunTimeSelectionTable
(
dragModel,
SchillerNaumann,
dictionary
);
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::SchillerNaumann::SchillerNaumann
(
const dictionary& interfaceDict,
const volScalarField& alpha,
const phaseModel& phasea,
const phaseModel& phaseb
)
:
dragModel(interfaceDict, alpha, phasea, phaseb)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::SchillerNaumann::~SchillerNaumann()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::tmp Foam::SchillerNaumann::K
(
const volScalarField& Ur
) const
{
volScalarField Re = max(Ur*phasea_.d()/phaseb_.nu(), scalar(1.0e-3));
volScalarField Cds =
neg(Re - 1000)*(24.0*(1.0 + 0.15*pow(Re, 0.687))/Re)
+ pos(Re - 1000)*0.44;
return 0.75*Cds*phaseb_.rho()*Ur/phasea_.d();
}
// ************************************************************************* //