The reynolds number effect on receptivity to a localized disturbance in a hypersonic boundary layer

Jayahar Sivasubramanian, Anatoli Tumin, Hermann F. Fasel

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

Abstract

Direct Numerical Simulations of wave packets in hypersonic flat–plate boundary layer reveal that the structure of a wave packet generated by a localized pulse disturbance introduced through a small hole in the wall depends on the location of the disturbance source. The wave packet develops both two–dimensional and three–dimensional structures when the disturbance source is located closer to the leading edge, whereas it has predominantly a two–dimensional nature when the disturbance source is located farther downstream (the Reynolds number effect). Theoretical analysis of the boundary–layer receptivity explains the Reynolds number effect by the different sensitivity of the flow to the first and the second discrete modes at the different disturbance source locations.

Original languageEnglish (US)
Title of host publication8th AIAA Flow Control Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624104329
DOIs
StatePublished - 2016
Event8th AIAA Flow Control Conference, 2016 - Washington, United States
Duration: Jun 13 2016Jun 17 2016

Publication series

Name8th AIAA Flow Control Conference

Other

Other8th AIAA Flow Control Conference, 2016
CountryUnited States
CityWashington
Period6/13/166/17/16

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Control and Systems Engineering
  • Aerospace Engineering

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  • Cite this

    Sivasubramanian, J., Tumin, A., & Fasel, H. F. (2016). The reynolds number effect on receptivity to a localized disturbance in a hypersonic boundary layer. In 8th AIAA Flow Control Conference (8th AIAA Flow Control Conference). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2016-4246