Integral Skin Friction Prediction for Turbulent Separated Flows

[+] Author and Article Information
D. K. Das

University of Alaska-Fairbanks, Fairbanks, AK 99775-0660

F. M. White

University of Rhode Island, Kingston, RI 02881-0805

J. Fluids Eng 108(4), 476-482 (Dec 01, 1986) (7 pages) doi:10.1115/1.3242606 History: Received August 26, 1985; Online October 26, 2009


An integral method is presented for computing incompressible two-dimensional turbulent skin friction for separated flows based on the inner-variable theory. Using a velocity profile in the form of the logarithmic law and wake, continuity and momentum equations are integrated across the boundary layer in terms of inner-variables u+ and y+ . With the aid of correlations relating the wake parameter to the pressure gradient parameter, derived from experimental results of several near-separating and separated flows, the governing equations are reduced to a single differential equation in skin friction. Predictions by the theory for several separated flows show satisfactory agreement with experimental data.

Copyright © 1986 by ASME
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