Document Type

Article

Publication Date

1977

DOI

10.1063/1.861756

Publication Title

Physics of Fluids

Volume

20

Issue

10

Pages

S31-S48

Abstract

A critical analysis of available compliant wall data which indicated drag reduction under turbulent boundary layers is presented. Detailed structural dynamic calculations suggest that the surfaces responded in a resonant, rather than a compliant, manner. Alternate explanations are given for drag reductions observed in two classes of experiments: (1) flexible pipe flows and (2) water-backed membranes in air. Analysis indicates that the wall motion for the remaining data is typified by short wavelengths in agreement with the requirements of a possible compliant wall drag reduction mechanism recently suggested by Langley. Copyright © 1977 American Institute of Physics.

Original Publication Citation

Bushnell, D. M., Hefner, J. N., & Ash, R. L. (1977). Effect of compliant wall motion on turbulent boundary layers. Physics of Fluids, 20(10), S31-S48. doi:10.1063/1.861756

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