including support for TDAC and ISAT for efficient chemistry calculation.

Description
    Eddy Dissipation Concept (EDC) turbulent combustion model.

    This model considers that the reaction occurs in the regions of the flow
    where the dissipation of turbulence kinetic energy takes place (fine
    structures). The mass fraction of the fine structures and the mean residence
    time are provided by an energy cascade model.

    There are many versions and developments of the EDC model, 4 of which are
    currently supported in this implementation: v1981, v1996, v2005 and
    v2016.  The model variant is selected using the optional \c version entry in
    the \c EDCCoeffs dictionary, \eg

    \verbatim
        EDCCoeffs
        {
            version v2016;
        }
    \endverbatim

    The default version is \c v2015 if the \c version entry is not specified.

    Model versions and references:
    \verbatim
        Version v2005:

            Cgamma = 2.1377
            Ctau = 0.4083
            kappa = gammaL^exp1 / (1 - gammaL^exp2),

            where exp1 = 2, and exp2 = 2.

            Magnussen, B. F. (2005, June).
            The Eddy Dissipation Concept -
            A Bridge Between Science and Technology.
            In ECCOMAS thematic conference on computational combustion
            (pp. 21-24).

        Version v1981:

            Changes coefficients exp1 = 3 and exp2 = 3

            Magnussen, B. (1981, January).
            On the structure of turbulence and a generalized
            eddy dissipation concept for chemical reaction in turbulent flow.
            In 19th Aerospace Sciences Meeting (p. 42).

        Version v1996:

            Changes coefficients exp1 = 2 and exp2 = 3

            Gran, I. R., & Magnussen, B. F. (1996).
            A numerical study of a bluff-body stabilized diffusion flame.
            Part 2. Influence of combustion modeling and finite-rate chemistry.
            Combustion Science and Technology, 119(1-6), 191-217.

        Version v2016:

            Use local constants computed from the turbulent Da and Re numbers.

            Parente, A., Malik, M. R., Contino, F., Cuoci, A., & Dally, B. B.
            (2016).
            Extension of the Eddy Dissipation Concept for
            turbulence/chemistry interactions to MILD combustion.
            Fuel, 163, 98-111.
    \endverbatim

Tutorials cases provided: reactingFoam/RAS/DLR_A_LTS, reactingFoam/RAS/SandiaD_LTS.

This codes was developed and contributed by

    Zhiyi Li
    Alessandro Parente
    Francesco Contino
    from BURN Research Group

and updated and tested for release by

    Henry G. Weller
    CFD Direct Ltd.