Frank.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2014-2015 OpenFOAM Foundation
     \\/     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
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    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
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\*---------------------------------------------------------------------------*/
 
#include "Frank.H"
#include "phasePair.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace wallLubricationModels
{
    defineTypeNameAndDebug(Frank, 0);
    addToRunTimeSelectionTable
    (
        wallLubricationModel,
        Frank,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::wallLubricationModels::Frank::Frank
(
    const dictionary& dict,
    const phasePair& pair
)
:
    wallLubricationModel(dict, pair),
    Cwd_("Cwd", dimless, dict),
    Cwc_("Cwc", dimless, dict),
    p_(readScalar(dict.lookup("p")))
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::wallLubricationModels::Frank::~Frank()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::tmp<Foam::volVectorField> Foam::wallLubricationModels::Frank::Fi() const
{
    volVectorField Ur(pair_.Ur());
 
    const volVectorField& n(nWall());
    const volScalarField& y(yWall());
 
    volScalarField Eo(pair_.Eo());
    volScalarField yTilde(y/(Cwc_*pair_.dispersed().d()));
 
    return
        (
            pos(Eo - 1.0)*neg(Eo - 5.0)*exp(-0.933*Eo + 0.179)
          + pos(Eo - 5.0)*neg(Eo - 33.0)*(0.00599*Eo - 0.0187)
          + pos(Eo - 33.0)*0.179
        )
       *max
        (
            dimensionedScalar("zero", dimless/dimLength, 0.0),
            (1.0 - yTilde)/(Cwd_*y*pow(yTilde, p_ - 1.0))
        )
       *pair_.continuous().rho()
       *magSqr(Ur - (Ur & n)*n)
       *n;
}
 
 
// ************************************************************************* //