Hydrodynamic Stability and Transition to Turbulence in the Hypersonic Boundary Layer over a Sharp Cone
- 1 July 1975
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
Periodic oscillations have been observed in the laminar boundary layer of a sharp tipped, 5-degree adiabatic cone immersed in a stream of Mach no. 8. These oscillations have been photographed with a spark shadowgraph system and probed with a hot-wire anemometer. Evidence indicates that the waves are due to a hydrodynamic instability of the Tollmien-Schlichting type, active in the 2 million Reynolds no. Various factors involved are discussed.Keywords
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