Transition studies on an elliptic cone in Mach 8 flow using filtered Rayleigh scattering

Mark Huntley, Alexander Smits

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Boundary layer transition on a sharp-nosed elliptic cone in a Mach 8 flow was experimentally investigated using CO2-enhanced Filtered Rayleigh Scattering. The 4:1 elliptic cone was tested at Reynolds numbers ranging from 0.44 × 106 to 3.5 × 106, based on free stream conditions and streamwise distance measured from the cone tip. Boundary layers ranging from fully laminar to late-transitional in character were imaged using single-shot streamwise, spanwise and planform laser orientations. Images taken of the early stages of transition reveal for the first time that transition begins with the emergence of small-scale structures near the centerline axis of the cone (minor axis), rather than in the outboard cross-flow region. The three-dimensional character of these structures is further explored by simultaneously imaging the planform and spanwise planes.

Original languageEnglish (US)
Pages (from-to)695-706
Number of pages12
JournalEuropean Journal of Mechanics, B/Fluids
Volume19
Issue number5
DOIs
StatePublished - Sep 2000

All Science Journal Classification (ASJC) codes

  • Mathematical Physics
  • Physics and Astronomy(all)

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