An Improved k-ε Model for Boundary Layer Flows

[+] Author and Article Information
Y. Nagano, M. Tagawa

Department of Mechanical Engineering, Nagoya Institute of Technology, Nagoya 466, Japan

J. Fluids Eng 112(1), 33-39 (Mar 01, 1990) (7 pages) doi:10.1115/1.2909365 History: Received December 13, 1988; Online May 23, 2008


An improvement of the k-ε model has been made in conjunction with an accurate prediction of the near-wall limiting behavior of turbulence and the final period of the decay law of free turbulence. The present improved k-ε model has been extended to predict the effects of adverse pressure gradients on shear layers, which most previously proposed models failed to do correctly. The proposed model was tested by application to a turbulent pipe flow, a flat plate boundary layer, a relaminarizing flow, and a diffuser flow with a strong adverse pressure gradient. Agreement with the experiments was generally very satisfactory.

Copyright © 1990 by The American Society of Mechanical Engineers
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