Comparison of the Triple-Deck Theory, Interactive Boundary Layer Method, and Navier-Stokes Computation for Marginal Separation

[+] Author and Article Information
Chao-Tsung Hsiao, Laura L. Pauley

Mechanical Engineering Department, Pennsylvania State University, University Park, PA

J. Fluids Eng 116(1), 22-28 (Mar 01, 1994) (7 pages) doi:10.1115/1.2910235 History: Received October 07, 1992; Revised October 07, 1993; Online May 23, 2008


The steady two-dimensional marginal separation of an incompressible boundary layer flow within a channel was solved independently by three different methods: the triple-deck method of marginal separation, the interactive boundary layer method, and the full Navier-Stokes computation. From comparison of the results between these three methods, the accuracy and appropriateness of each method was determined. The critical condition beyond which the steady marginal separation solution of triple-deck method does not exist was related to a physical phenomenon in which the separation bubble becomes unsteady. Factors such as Reynolds number and pressure gradient distribution which might influence the accuracy of the marginal separation solution were also investigated.

Copyright © 1994 by The American Society of Mechanical Engineers
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