An experimental study of receptivity of acoustic waves in laminar boundary layers View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1994-06

AUTHORS

M. D. Zhou, D. P. Liu, R. F. Blackwelder

ABSTRACT

The receptivity of a laminar boundary layer developing on a flat plate was studied with two- and three-dimensional roughness elements. The layer was subjected to acoustic waves from speakers orientated perpendicular to the surface of the plate. Visualization of the transition patterns were obtained by heating temperature sensitive liquid crystals on the plate and observing the cooling patterns associated with the different flow regimes. Hot-wire data showed that the most amplified Tollmien-Schlichting waves dominated the downstream growth when the roughnesses were placed within the linearly unstable regime. The receptivity depended upon the size and aspect ratio of the three-dimensional roughness as predicted by Choudhari and Kerschen 1990. More... »

PAGES

1-9

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02412797

DOI

http://dx.doi.org/10.1007/bf02412797

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1021048388


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