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A study of the unsteadiness of crossing shock wave turbulent boundary layer interactionsThe unsteadiness of crossing shock wave turbulent boundary layer interactions at a nominal Mach number of 3 was examined by measuring wall pressure fluctuations using multiple, high frequency response, pressure transducers. The unsteadiness in the initial part of the interaction for all the interactions is similar to that of single fin interaction as studied by Tran and Bogdonoff (1987). However, for stronger interactions, flow downstream of the inviscid shock crossing position has a significant unsteady characteristic. In this unsteady region of the interaction, mean surface pressure rises significantly over the value obtained from the inviscid shock approximation. The energy spectrum of the fluctuating pressure signal shows a significant increase in the energy level at the higher frequencies.
Document ID
19900051559
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Poddar, K.
(Princeton Univ. NJ, United States)
Bogdonoff, S. M.
(Princeton University NJ, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 90-1456
Accession Number
90A38614
Funding Number(s)
CONTRACT_GRANT: NAG3-926
CONTRACT_GRANT: AF-AFOSR-89-0033
Distribution Limits
Public
Copyright
Other

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