Application of Turbulence Models to Bypass Transition

[+] Author and Article Information
K. J. A. Westin

Department of Mechanics, Royal Institute of Technology, S-100 44 Stockholm, Sweden

R. A. W. M. Henkes

Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands

J. Fluids Eng 119(4), 859-866 (Dec 01, 1997) (8 pages) doi:10.1115/1.2819509 History: Received October 25, 1996; Revised March 31, 1997; Online January 22, 2008


The present study considers the use of low-Reynolds number, single-point closures for transition prediction at high levels of free-stream turbulence. The work is focused on two differential Reynolds Stress Transport models, which are compared with the k – ε model of Launder and Sharma. Calculations are carried out for attached boundary layer flow on a flat plate equipped with a sharp leading edge at zero-pressure gradient and for various free-stream turbulence levels. Comparisons with results from a large eddy simulation reveal significant shortcomings in the modeling of the dissipation, with a large overprediction in the pretransitional boundary layer. The present results are in some cases in conflict with other results reported in the literature, and it is shown that the discrepancies can be ascribed to the implementation of the free-stream boundary conditions.

Copyright © 1997 by The American Society of Mechanical Engineers
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