Turbulence Modeling for Heat Transfer

This is a review article on modeling for turbulent heat transport. Models for Reynolds-averaged and hybrid simulation of turbulent flow and heat transfer are reviewed. Concepts that underly the models are summarized, and literature is cited. Representing turbulent heat flux by an effective Prandtl number is discussed at length. In addition to its prescription for Reynolds-averaged modeling, methods to compute it dynamically during a simulation are reviewed. Asymmetry of the heat diffusivity is described. Methods to specify the diffusion tensor by algebraic flux approximation and generalized gradient diffusion are surveyed.