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Published June 2009 | Published
Conference Paper Open

Perturbation of a turbulent boundary layer by spatially-impulsive dynamic roughness


First experimental measurements of manipulation of the structure of a canonical zero pressure gradient turbulent boundary layer using a low frequency (compared to the viscous frequency) mechanical dynamic roughness are presented. "Dynamic" (or time-dependent) surface roughness is proposed as a method for both control and diagnosis of turbulent boundary layers.

Additional Information

© 2009 by B. J. McKeon, I. Jacobi & J. LeHew. The support of the Air Force Office of Scientific Research Boundary Layer Physics program under award #FA9550-08-1-0049 (program manager: John Schmisseur) is gratefully acknowledged.

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Published - AIAA-2009-3566-371.pdf


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October 20, 2023