TomiyamaAnalytic.C

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    Copyright (C) 2014-2018 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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#include "TomiyamaAnalytic.H"
#include "phasePair.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace dragModels
{
    defineTypeNameAndDebug(TomiyamaAnalytic, 0);
    addToRunTimeSelectionTable(dragModel, TomiyamaAnalytic, dictionary);
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::dragModels::TomiyamaAnalytic::TomiyamaAnalytic
(
    const dictionary& dict,
    const phasePair& pair,
    const bool registerObject
)
:
    dragModel(dict, pair, registerObject),
    residualRe_("residualRe", dimless, dict),
    residualEo_("residualEo", dimless, dict),
    residualE_("residualE", dimless, dict)
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::dragModels::TomiyamaAnalytic::~TomiyamaAnalytic()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::volScalarField>
Foam::dragModels::TomiyamaAnalytic::CdRe() const
{
    volScalarField Eo(max(pair_.Eo(), residualEo_));
    volScalarField E(max(pair_.E(), residualE_));
 
    volScalarField OmEsq(max(scalar(1) - sqr(E), sqr(residualE_)));
    volScalarField rtOmEsq(sqrt(OmEsq));
 
    volScalarField F(max(asin(rtOmEsq) - E*rtOmEsq, residualE_)/OmEsq);
 
    return
        (8.0/3.0)
       *Eo
       /(
            Eo*pow(E, 2.0/3.0)/OmEsq
          + 16*pow(E, 4.0/3.0)
        )
       /sqr(F)
       *max(pair_.Re(), residualRe_);
}
 
 
// ************************************************************************* //