Numerical Investigations of Boundary Layer Instabilities on a Blunt Swept Flat Plate at Mach 6

Madlen Leinemann, Anthony Haas, Christoph Hader, Hermann F. Fasel

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

Abstract

Numerical Computations are carried out in order to investigate the linear (primary) instability mechanisms for a hypersonic boundary layer on a blunt, infinite swept flat plate at 0◦ and -7° angle of attack (AoA) and a sweep angle of Λ = 70°. The flow conditions of the Boeing/AFOSR Mach 6 Quiet Tunnel (BAM6QT) at Purdue University were chosen for the calculations. Linear stability theory (LST) predicts the amplification of the second mode, steady and traveling crossflow instabilities for both angles of attack, but slightly higher growth rates are found at 0° AoA. Maximum N-factors of # ≈ 8 and N ≈ 13 are computed for the second mode and for the traveling crossflow respectively at both angles of attack. Low amplitude so-called controlled forcing and preliminary low amplitude (linear) three-dimensional wavepacket computations are in good agreement with LST.

Original languageEnglish (US)
Title of host publicationAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624107047
DOIs
StatePublished - 2023
EventAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023 - San Diego, United States
Duration: Jun 12 2023Jun 16 2023

Publication series

NameAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023

Conference

ConferenceAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
Country/TerritoryUnited States
CitySan Diego
Period6/12/236/16/23

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Aerospace Engineering

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