Numerical Analysis of Turbulent Flow with Heat Transfer in a Square Duct with 45 Degree Ribs

Abstract

Numerical analysis has been performed for turbulent flow with heat transfer in a square duct with 45 degree ribs by using an algebraic Reynolds stress and turbulent heat flux models. Calculated results are compared with the experiment in order to confirm the validity of the presented model. It has been found that the calculation can reproduce reasonably the measured velocity profiles including secondary flow vectors. Besides, two kinds of turbulent models are applied to temperature field and the difference between turbulent heat flux model and constant turbulent Prandtl number model are described by showing the distributions of Nusselt number.