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Predicted and hot-film measured Tollmien-Schlichting wave characteristicsThe Tollmien-Schlichting (TS) instability is a time-dependence instability which can lead to transition of laminar boundary layers on airfoils. A comparison of theoretical predictions and experimental observations of the TS instability on the NLF(1)-0414F airfoil designed by Viken and Pfenninger. The theoretical predictions were obtained using the SALLY stability code. Test results, from the same hot films that were used to detect transition, revealed that TS waves could be detected by the hot films if the hot-film signal was adequately modified.
Document ID
19900003207
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stack, John P. (NASA Langley Research Center Hampton, VA, United States)
Yeaton, Robert B. (NASA Langley Research Center Hampton, VA, United States)
Dagenhart, J. Ray (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1987
Publication Information
Publication: Research in Natural Laminar Flow and Laminar-Flow Control, Part 2
Subject Category
Aerodynamics
Accession Number
90N12523
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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