Effect of compliant wall motion on turbulent boundary layers
作者:
Dennis M. Bushnell,
Jerry N. Hefner,
Robert L. Ash,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1977)
卷期:
Volume 20,
issue 10
页码: 31-48
ISSN:0031-9171
年代: 1977
DOI:10.1063/1.861756
出版商: AIP
数据来源: AIP
摘要:
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.
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