Evolution of localized artificial disturbance in 2D and 3D supersonic boundary layers

Aleksey Yatskikh, Yury Yermolaev, Alexander Kosinov, Nikolai Semionov, Alexander Semenov

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The evolution of a controlled broadband wave packet in flat-plate and swept-wing supersonic boundary layers was experimentally investigated at Mach number M = 2. The wave packet was introduced into the boundary layer by a localized pulse electrical discharge. The structure and evolution downstream of the wave packet were studied by hot-wire measurements. It was found that the wave packet has a symmetric shape in a flat-plate boundary layer, whereas there is asymmetry in case of a swept-wing one. The spectral analysis of the development of different modes of the wave packet was provided.

Original languageEnglish
Pages (from-to)115-123
Number of pages9
JournalProceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Volume234
Issue number1
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • boundary layer
  • controlled experiment
  • flat plate
  • hot-wire measurements
  • Supersonic flow
  • swept wing
  • wave packet
  • WAVE-PACKETS
  • INSTABILITY
  • STABILITY
  • TURBULENT-SPOT
  • WAVEPACKETS
  • TRANSITION
  • DIRECT NUMERICAL-SIMULATION
  • HOT-WIRE VISUALIZATION
  • SHARP

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