Direct Numerical Simulations of Hypersonic Boundary-Layer Transition for a Straight Cone at Mach 4: Oblique Breakdown

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

1 Scopus citations

Abstract

Direct Numerical Simulations (DNS) were carried out to investigate the laminar-turbulent transition process for a sharp straight (right) cone with a 7º opening half-angle at Mach 4 and zero angle of attack. A three-dimensional wave packet simulation indicated that the socalled oblique breakdown is the dominant nonlinear mechanism. A highly-resolved DNS of an oblique breakdown confirmed that the boundary layer breaks down rapidly towards turbulent flow when the transition process is initiated by a pair of oblique first mode disturbances. The boundary-layer transition process was simulated deep into the nonlinear transition regime and towards the development of a fully turbulent flow.

Original languageEnglish (US)
Title of host publicationAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2021
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624106101
DOIs
StatePublished - 2021
Externally publishedYes
EventAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2021 - Virtual, Online
Duration: Aug 2 2021Aug 6 2021

Publication series

NameAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2021

Conference

ConferenceAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2021
CityVirtual, Online
Period8/2/218/6/21

ASJC Scopus subject areas

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

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