vanDriestDelta.H

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Class
    Foam::vanDriestDelta

Description
    Simple cube-root of cell volume delta used in incompressible LES models.

    Example of the delta specification in turbulenceProperties:
    \verbatim
        delta               vanDriest;

        vanDriestCoeffs
        {
            // Underlying geometric delta
            delta           cubeRootVol;
            // Coefficients for geometric delta
            cubeRootVolCoeffs
            {
                deltaCoeff      2.0;
            }
            // Optional update interval
            // Default is 1 (update every step)
            updateInterval    1000;
        }
    \endverbatim

SourceFiles
    vanDriestDelta.C

\*---------------------------------------------------------------------------*/

#ifndef vanDriestDelta_H
#define vanDriestDelta_H

#include "LESdelta.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{
namespace LESModels
{

/*---------------------------------------------------------------------------*\
                           Class vanDriestDelta Declaration
\*---------------------------------------------------------------------------*/

class vanDriestDelta
:
    public LESdelta
{
    // Private data

        autoPtr<LESdelta> geometricDelta_;
        scalar kappa_;
        scalar Aplus_;
        scalar Cdelta_;
        label calcInterval_;


    // Private Member Functions

        //- No copy construct
        vanDriestDelta(const vanDriestDelta&) = delete;

        //- No copy assignment
        void operator=(const vanDriestDelta&) = delete;

        // Calculate the delta values
        void calcDelta();


public:

    //- Runtime type information
    TypeName("vanDriest");


    // Constructors

        //- Construct from name, turbulenceModel and dictionary
        vanDriestDelta
        (
            const word& name,
            const turbulenceModel& turbulence,
            const dictionary&
        );


    //- Destructor
    virtual ~vanDriestDelta() = default;


    // Member Functions

        //- Read the LESdelta dictionary
        virtual void read(const dictionary&);

        // Correct values
        virtual void correct();
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace LESModels
} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //