SaffmanMeiLiftForce.C

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    Copyright (C) 2012-2017 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
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    for more details.
 
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#include "SaffmanMeiLiftForce.H"
#include "mathematicalConstants.H"
 
using namespace Foam::constant;
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
template<class CloudType>
Foam::scalar Foam::SaffmanMeiLiftForce<CloudType>::SaffmanMeiLiftForce::Cl
(
    const typename CloudType::parcelType& p,
    const typename CloudType::parcelType::trackingData& td,
    const vector& curlUc,
    const scalar Re,
    const scalar muc
) const
{
    scalar Rew = td.rhoc()*mag(curlUc)*sqr(p.d())/(muc + ROOTVSMALL);
    scalar beta = 0.5*(Rew/(Re + ROOTVSMALL));
    scalar alpha = 0.3314*sqrt(beta);
    scalar f = (1.0 - alpha)*exp(-0.1*Re) + alpha;
 
    scalar Cld = 0.0;
    if (Re < 40)
    {
        Cld = 6.46*f;
    }
    else
    {
        Cld = 6.46*0.0524*sqrt(beta*Re);
    }
 
    return 3.0/(mathematical::twoPi*sqrt(Rew + ROOTVSMALL))*Cld;
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class CloudType>
Foam::SaffmanMeiLiftForce<CloudType>::SaffmanMeiLiftForce
(
    CloudType& owner,
    const fvMesh& mesh,
    const dictionary& dict,
    const word& forceType
)
:
    LiftForce<CloudType>(owner, mesh, dict, forceType)
{}
 
 
template<class CloudType>
Foam::SaffmanMeiLiftForce<CloudType>::SaffmanMeiLiftForce
(
    const SaffmanMeiLiftForce& lf
)
:
    LiftForce<CloudType>(lf)
{}
 
 
// * * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * //
 
template<class CloudType>
Foam::SaffmanMeiLiftForce<CloudType>::~SaffmanMeiLiftForce()
{}
 
 
// ************************************************************************* //