Three-dimensional Developing Turbulent Flow in a Square Duct

Abstract

A fully elliptic numerical scheme based on the pressure correction procedure has been successfully employed for the prediction of a three-dimensional developing turbulent flow in a square duct. The calculations have been performed using a two-equation turbulence model coupled to algebraic stress model for the secondary flow of the second kind developed by Launder and Ying. In order to reveal full features of this particular stress model. the calculation results are compared extensively with available experimental data with strong emphasis on the local structures of turbulence responsible for the secondary flow generation.