Prediction of Flows With Strong Curvature and Pressure Gradient Using the k–ε Turbulence Model

[+] Author and Article Information
V. De Henau, G. D. Raithby, B. E. Thompson

Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1

J. Fluids Eng 112(1), 40-47 (Mar 01, 1990) (8 pages) doi:10.1115/1.2909366 History: Received December 12, 1988; Online May 23, 2008


The k –ε turbulence model of Launder and Spalding has found widespread application in the computation of fluid flows. Under conditions of strong adverse pressure gradient or strong streamline curvature, the accuracy of the model is known to decrease. The present paper adds to the available case studies involving these types of flows by providing predictions for two problems. In the first problem, Simpson’s flow, an adverse pressure gradient induces the flow along a planar surface to separate. The second problem is unseparated flow over an airfoil. In addition to predictions using the standard k –ε model, results are reported from another k –ε model by Hanjalic and Launder, that has been modified to account for adverse pressure gradients.

Copyright © 1990 by The American Society of Mechanical Engineers
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