Velocity measurements in a shock-separated free shear layer

C. W. Palko, J. C. Dutton

Research output: Contribution to conferencePaperpeer-review


Two-component laser Doppler velocimetry (LDV) measurements were made in a planar, shock-separated free shear layer formed by the convergence of two supersonic streams past a thick plate. High-speed wall pressure measurements locate the unsteady shock wave formed by this interaction and, consequently, allow separation of the effects of shock motion from the turbulence fluctuations in the velocity measurements of the shear layer. Shock-induced separation dramatically increases the normal stresses and shear stress. The shock-separated shear layer displays a positive shear stress region between separation and reattachment. Reattachment produces a shift in turbulent kinetic energy from the streamwise component to the transverse component. The region of shock motion has a relatively constant width irrespective of distance from the wall.

Original languageEnglish (US)
StatePublished - 1998
Externally publishedYes
Event36th AIAA Aerospace Sciences Meeting and Exhibit, 1998 - Reno, United States
Duration: Jan 12 1998Jan 15 1998


Other36th AIAA Aerospace Sciences Meeting and Exhibit, 1998
Country/TerritoryUnited States

ASJC Scopus subject areas

  • General Engineering
  • Space and Planetary Science


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