Hydrodynamic Stability and Transition to Turbulence in the Hypersonic Boundary Layer over a Sharp Cone

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.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1975
Accession Number
ADA016536

Entities

People

  • Anthony Demetriades

Tags

Communities of Interest

  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Transition
  • Computational Fluid Dynamics
  • Diffusion
  • Dispersions
  • Fluid Dynamics
  • High Resolution
  • Hot Wire
  • Hot Wire Anemometers
  • Laminar Boundary Layer
  • Low Resolution
  • Mach Number
  • Measurement
  • Surface Temperature
  • Turbulent Flow
  • Wind
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers