Comments on 'Choked Flow: A Generalization of the Concept and Some Experimental Data'

Abstract

The turbulent mixing region of a two-dimensional, supersonic, air-air ejector system has been experimentally investigated utilizing an interferometer. Density distributions for the two-stream mixing region within the ejector duct were established for 6 different test configurations. Similarity of the density distributions was indicated for mixing region cross sections as close as one nozzle-exit hydraulic diameter from the nozzle. Density profiles at successive downstream duct locations were plotted to show the spread of the mixing region. The effect of normal and oblique shocks on the rate of spread of the mixing region was found to be small. In addition, ejector performance data and techniques for spark lamp photography are presented. It is concluded that the interferometer could be effectively utilized to help determine the transport coefficients of ejector system turbulent mixing processes.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1982
Accession Number
ADP000317

Entities

People

  • James R. Nelson
  • William C. Robison

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Air Ejectors
  • Air Force
  • Air Force Facilities
  • Boundaries
  • Boundary Layer
  • Convergent Divergent Nozzles
  • Ejectors
  • Experimental Data
  • Flow
  • Mach Number
  • Mixing
  • Nozzles
  • Pressure Gradients
  • Secondary Flow
  • Static Pressure
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow