A Simple, Accurate Integral Solution for Accelerating Turbulent Boundary Layers With Transpiration

[+] Author and Article Information
James Sucec

Mechanical Engineering Department, University of Maine, Orono, ME 04469-5711

J. Fluids Eng 117(3), 535-538 (Sep 01, 1995) (4 pages) doi:10.1115/1.2817297 History: Received September 16, 1994; Revised January 20, 1995; Online December 04, 2007


The inner law for transpired turbulent boundary layers is used as the velocity profile in the integral form of the x momentum equation. The resulting ordinary differential equation is solved numerically for the skin friction coefficient, as well as boundary layer thicknesses, as a function of position along the surface. Predicted skin friction coefficients are compared to experimental data and exhibit reasonably good agreement with the data for a variety of different cases. These include blowing and suction, with constant blowing fractions F for both mild and severe acceleration. Results are also presented for more complicated cases where F varies with x along the surface.

Copyright © 1995 by The American Society of Mechanical Engineers
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