A Numerical Study on the Generation Mechanism of Turbulence-Driven Secondary Flow in a Square Duct

[+] Author and Article Information
Hyon Kook Myong

Thermal/Fluids Engineering Laboratory, Korea Institute of Science and Technology, Seoul 130-650, Korea

J. Fluids Eng 115(1), 172-175 (Mar 01, 1993) (4 pages) doi:10.1115/1.2910103 History: Received February 05, 1992; Online May 23, 2008


The generation mechanism of turbulence-driven secondary flows in a square duct is numerically investigated in the present study by using an anisotropic low-Reynolds-number k–ε turbulence model. Special attention is directed to the distributions of turbulence quantities, which are responsible for the secondary flow generation, such as the anisotropy of normal Reynolds stresses and the secondary Reynolds shear stress acting on the cross-sectional plane. The vorticity transport process is also discussed in detail, based on the numerical evaluation of the individual terms which appear in the streamwise vorticity transport equation.

Copyright © 1993 by The American Society of Mechanical Engineers
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