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Numerical Investigations of the Nonlinear Stages of Hypersonic Boundary-Layer Transition for an Ogive Geometry

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Numerical investigations were carried out for the boundary layer of an ogive geometry with a blunted nose tip and for the flow conditions of the German Aerospace Center (DLR) hypersonic wind tunnel (H2K) experiments at Mach 5.3. Linear Stability Theory (LST) analysis identified amplified first- and second-mode waves. Various nonlinear transition scenarios were examined using Direct Numerical Simulations (DNS). The simulation results for a “controlled” first mode oblique breakdown showed a transition development in the boundary layer advancing towards the late nonlinear stages and turbulence, with oblique first-mode waves initiating transition. The forcing amplitudes were selected to align the transition onset in simulations with that observed in experiments.

Original languageEnglish (US)
Title of host publicationIUTAM Bookseries
PublisherSpringer Science and Business Media B.V.
Pages29-36
Number of pages8
DOIs
StatePublished - 2026

Publication series

NameIUTAM Bookseries
Volume44
ISSN (Print)1875-3507
ISSN (Electronic)1875-3493

Keywords

  • Boundary-layer transition
  • DNS
  • Hypersonic flow

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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