Analytical Investigation of High Performance, Short, Thrust Augmenting Ejectors.

Abstract

A procedure for analyzing thrust augmenting ejectors having a short, curved-wall diffuser is presented. In this type of diffuser a shear flow is admitted at the inlet and a set of auxiliary ejectors is used to provide the necessary boundary layer control. Several computer programs are used in the analytical procedure. These computer programs are either outlined or referenced in the open literature. A user's manual is provided in the Appendices of this report. A discussion of the geometries and performances, including thrust augmentation ratios, of two sample ejectors determined by use of this analytical procedure with mixing chamber contraction as an optimization parameter is presented. Use of the mixing chamber length as an optimization parameter is also discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 04, 1982
Accession Number
ADA111278

Entities

People

  • Francois Ntone
  • Tah-teh Yang

Organizations

  • Clemson University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Boundary Layer
  • Boundary Layer Control
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Coordinate Systems
  • Diffusers
  • Fluid Dynamics
  • Geometry
  • Mechanical Engineering
  • Pressure Distribution
  • Pressure Gradients
  • Shear Flow
  • Stagnation Pressure
  • Static Pressure
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Business Analytics
  • Combustion and Flow Dynamics.