GidaspowErgunWenYuDrag.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::GidaspowErgunWenYuDrag
 
Description
    Drag model of Gidaspow which switches between the drag models of Ergun and
    Wen and Yu at different particulate volume dractions
 
    References:
    \verbatim
        Gidaspow, D. (1994).
        Multiphase flow and fluidisation: continuum and kinetic theory
        descriptions.
        Academic press, New York.
    \endverbatim
 
Usage
    Example specification:
    \verbatim
    <LagrangianModelName>
    {
        type        GidaspowErgunWenYuDrag;
    }
    \endverbatim
 
SourceFiles
    GidaspowErgunWenYuDrag.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef GidaspowErgunWenYuDrag_H
#define GidaspowErgunWenYuDrag_H
 
#include "drag.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Lagrangian
{
 
/*---------------------------------------------------------------------------*\
                          Class GidaspowErgunWenYuDrag Declaration
\*---------------------------------------------------------------------------*/
 
class GidaspowErgunWenYuDrag
:
    public drag
{
private:
 
    // Private Member Functions
 
        //- Calculate the drag coefficient
        virtual tmp<LagrangianSubScalarField> calcD
        (
            const LagrangianModelRef& model,
            const LagrangianSubMesh& subMesh
        ) const;
 
 
    // Private Data
 
        //- The upper bound on the volume fraction
        const scalar alphaMax_;
 
 
public:
 
    //- Runtime type information
    TypeName("GidaspowErgunWenYuDrag");
 
 
    // Constructors
 
        //- Construct from components
        GidaspowErgunWenYuDrag
        (
            const word& name,
            const LagrangianMesh& mesh,
            const dictionary& modelDict,
            const dictionary& stateDict
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Lagrangian
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //