Entrainment and Mixing in Thrust Augmenting Ejectors

Abstract

Experiments have been performed with subsonic and underexpanded choked two-dimensional primary nozzle ejector flow system without diffusion to evaluate the role of entrainment and mixing in thrust augmentation. Two- component Laser Doppler velocity measurements (mean and fluctuating values), thrust measurements, ejector shroud surface pressure measurements and flow visualization were used to determine the evolution of the velocity profiles and their relationship to the ejector performance.

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Document Details

Document Type
Technical Report
Publication Date
Feb 26, 1982
Accession Number
ADA121637

Entities

People

  • L. Bernal
  • V. Sarohia

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computer Programs
  • Data Processing
  • Flow Fields
  • Flow Visualization
  • Fluid Dynamics
  • Geometry
  • Instrumentation
  • Jet Propulsion
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Secondary Flow
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Directed Energy