Fluid-thermal-structural interactions in ramp-induced shock-wave/boundary-layer interactions at mach 6

Antonio Giovanni Schöneich, Thomas J. Whalen, Stuart J. Laurence, Bryson T. Sullivan, Daniel J. Bodony, Maxim Freydin, Earl H. Dowell, Larson J. Stacey, Gregory M. Buck

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

Abstract

Experiments were conducted to study the fluid-thermal-structural interactions of a compliant panel exposed to ramp-induced shock-wave/boundary-layer interactions (SWBLIs) at Mach 6 for laminar and transitional incoming boundary-layers. For some cases, boundary-layer trips were introduced to generate a turbulent boundary layer over half of the interrogation area. Infrared thermography was used to measure the variations in surface temperature on a compliant panel embedded in a rigid ramp. A plenum box was designed to enable the control of the back pressure behind the compliant panel. High-frequency pressure transducers measured the mean and fluctuating static pressure inside the cavity. Simultaneous temperature and pressure measurements enabled the analysis of the thermal and vibratory response of the compliant panel when subjected to SWBLIs for multiple ramp angles. The thermography also revealed an unexpected low temperature region visible on the panel at high ramp angles and Reynolds Numbers. A spanwise-nonuniform boundary layer generated by upstream trips resulted in the excitation of different modes on the panel. A study on the effects of the pressure difference on the panel natural frequencies revealed that the modes are diversely affected at low pressure differentials.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2021 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1-13
Number of pages13
ISBN (Print)9781624106095
StatePublished - 2021
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
Duration: Jan 11 2021Jan 15 2021

Publication series

NameAIAA Scitech 2021 Forum

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online
Period1/11/211/15/21

ASJC Scopus subject areas

  • Aerospace Engineering

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