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A finite Reynolds-number approach for the prediction of boundary-layer receptivity in localized regionsPrevious theoretical work on the boundary layer receptivity problem has utilized large Reynolds number asymptotic theories, thus being limited to a narrow part of the frequency-Reynolds number domain. An alternative approach is presented for the prediction of localized instability generation which has a general applicability, and also accounts for finite Reynolds number effects. This approach is illustrated for the case of Tollmien-Schlichting wave generation in a Blasius boundary layer due to the interaction of a free stream acoustic wave with a region of short scale variation in the surface boundary condition. The specific types of wall inhomogeneities studied are: regions of short scale variations in wall suction, wall admittance, and wall geometry (roughness). Extensive comparison is made between the results of the finite Reynolds number approach and previous asymptotic predictions, which also suggests an alternative way of using the latter at Reynolds numbers of interest in practice.
Document ID
19930029957
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Choudhari, Meelan
(High Technology Corp. Hampton, VA, United States)
Streett, Craig L.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Physics of Fluids A
Volume: 4
Issue: 11
ISSN: 0899-8213
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
93A13954
Funding Number(s)
CONTRACT_GRANT: NAS1-18240
Distribution Limits
Public
Copyright
Other

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