Lain.C

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    Copyright (C) 2014-2018 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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    for more details.
 
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#include "Lain.H"
#include "phasePair.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace dragModels
{
    defineTypeNameAndDebug(Lain, 0);
    addToRunTimeSelectionTable(dragModel, Lain, dictionary);
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::dragModels::Lain::Lain
(
    const dictionary& dict,
    const phasePair& pair,
    const bool registerObject
)
:
    dragModel(dict, pair, registerObject)
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::dragModels::Lain::~Lain()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::volScalarField> Foam::dragModels::Lain::CdRe() const
{
    volScalarField Re(pair_.Re());
 
    return
        neg(Re - 1.5)*16.0
      + pos0(Re - 1.5)*neg(Re - 80)*14.9*pow(Re, 0.22)
      + pos0(Re - 80)*neg(Re - 1500)*48*(1 - 2.21/sqrt(max(Re, SMALL)))
      + pos0(Re - 1500)*2.61*Re;
}
 
 
// ************************************************************************* //