Unsteady surface and flowfield measurements in ramp-induced turbulent and transitional shock-wave boundary-layer interactions at mach 6

Thomas Whalen, Richard Kennedy, Stuart Laurence, Bryson Sullivan, Daniel Bodony, Gregory Buck

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the current study, shock-wave boundary-layer interactions of a compression cor-ner configuration are investigated for transitional and turbulent boundary-layers at Mach 6. Mean and unsteady wall pressure distributions for a range of ramp angles are obtained and demonstrate the extreme loading environment of SWBLI at hypersonic conditions. Turbulent SWBLI separation lengths are estimated using detailed focusing schlieren imagery of the interaction, while general flowfield attributes of interactions at both run conditions are assessed in the same manner. Visualizations of transitional SWBLI reveal shocklets arising during convection of boundary-layer instabilities through the separated shear-layer, which may hold implications for the amplification of such features. The presence of shocklets propagating along the separation and reattachment shocks in fully separated turbulent interactions correlates with larger instantaneous separation lengths, as measured both visually and by means of pressure sensors, and may represent ejected mass from the region of recirculating fluid at the corner.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

ASJC Scopus subject areas

  • Aerospace Engineering

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