Effect of wall thermal properties on the mean temperature profile in near-wall turbulence (original) (raw)

Heat transfer coefficient in the fully developed turbulent channel flow bounded with walls heated with constant heat flux, is known to be a function of Reynolds and Prandtl number only (if the temperature is assumed to be a passive scalar). The present study, based on the results of the Direct Numerical Simulations reports a small difference of approximately 0.5% that exists in heat transfer rates near the wall of fully developed turbulent channel flow at the same Reynolds and Prandtl numbers, the same heat flux, but with different thermal activity ratios.