Heat Transfer Modeling for Pertuberbed Turbulent Flow

Abstract

A wall-layer turbulent heat transfer model based on turbulent momentum flux is proposed.
A pre-generated database obtained from a direct numerical simulation of the perturbed turbulent channel and plane Couette flows with heat transfer was used. Local blowing and suction, axial and wall-normal pressure gradient steps, and a local wall temperature step were used as perturbations in these turbulent flows for both configurations. The turbulent heat fluxes were modeled based on a transformation of the turbulent fluxes by the mean wall-normal gradient of the temperature and axial velocity. A priori comparisons show that the model performs well for the type of perturbed turbulent flow and configurations used in this study.