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Spatial simulation of boundary layer instability - Effects of surface roughness (1993)

Streett, C. L. ; Bringen, S. ; Danabasoglu, G.

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Publication Date: 2019-07-13

Description: The effects of an isolated, two-dimensional roughness element on the spatial development of instability waves in boundary layers are investigated by numerically integrating the two-dimensional, time-dependent, incompressible Navier-Stokes equations, using a finite difference/Chebyshev discretization. It is shown that (high) inviscid frequencies have higher growth rates than Tollmien-Schlichting frequencies, indicating that disturbances growing in the separation zone are controlled by the inviscid instability of the shear layer at the edge of the separation zone.

Keywords: AERODYNAMICS

Type: AIAA PAPER 93-0075 , AIAA, Aerospace Sciences Meeting and Exhibit; Jan 11, 1993 - Jan 14, 1993; Reno, NV; United States|; 15 p.

Format: text

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