template<class BasicTurbulenceModel>
          twophaseMixingLength class
        
        Mixing length model for two-phase flow (only valid for 1D case with Y the wall-normal direction)
References:
    Revil-Baudard, T. and Chauchat, J. (2013)
    A two-phase model for sheet flow regime based on dense granular flow
    rheology.
    Journal of Geophysical Research - Oceans, 118, 619-634
The default model coefficients correspond to the following:
    twophaseMixingLengthCoeffs
    {
        Cmu         0.09;
        expoLM      1.0;
        alphaMaxLM  0.55;
        kappaLM     0.225;
    }
This file is in the