A New Low-Reynolds-Number k-ε Model for Turbulent Flow Over Smooth and Rough Surfaces

[+] Author and Article Information
Hanzhong Zhang

TSI Incorporated, P.O. Box 64394, St. Paul, MN 55164

Mohammad Faghri, Frank M. White

Department of Mechanical Engineering, University of Rhode Island, Kingston, RI 02881-0805

J. Fluids Eng 118(2), 255-259 (Jun 01, 1996) (5 pages) doi:10.1115/1.2817371 History: Received July 26, 1994; Revised July 07, 1995; Online December 04, 2007


A new low-Reynolds-number k-ε model is proposed to simulate turbulent flow over smooth and rough surfaces by including the equivalent sand-grain roughness height into the model functions. The simulation of various flow experiments shows that the model can predict the log-law velocity profile and other properties such as friction factors, turbulent kinetic energy and dissipation rate for both smooth and rough surfaces.

Copyright © 1996 by The American Society of Mechanical Engineers
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