In turbulent flows your mass diffusion coefficient inputs consist of defining the molecular contributionto diffusion NO QP using the same methods available for the laminar case, with the added option to alterthe default settings for the turbulent Schmidt number. As seen from Equation 7.66 (p. 455), this parameterrelates the effective mass diffusion coefficient due to turbulence with the eddy viscosity RS. As discussedin Mass Diffusion Coefficient Inputs for Turbulent Flow (p. 463), the turbulent diffusion coefficient normall