THE PERFORMANCE OF AN AIR-AIR EJECTOR ACCORDING TO A QUASI-ONE-DIMENSIONAL THEORY

Abstract

A quasi-one-dimensional theory is developed for the flow in an air-air ejector with sonic injection. It is based on the concept of 'general' or 'two stream' choking and deals with the constant area compressible mixing of two streams of the same gas with constant specific heats. Some numerical solutions are presented for the case of an air-air ejector. The effects of the total pressure ratio and total enthalpy ratio between the injected streams are determined for various geometries. The maximum flow or choked solutions are also investigated. The theory is extended to cover the cases of supersonic injection and the mixing of two different gases. A few numerical results for supersonic injection are presented.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1967
Accession Number
AD0667275

Entities

People

  • W. T. Hanbury

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Ejectors
  • Back Pressure
  • Base Pressure
  • Boundary Layer
  • Equations
  • Flow
  • Fluid Mechanics
  • Gas Laws
  • Gas Turbine Nozzles
  • Geometry
  • Mach Number
  • Mass Flow
  • Plastic Explosives
  • Secondary Injection
  • Specific Heat
  • Static Pressure
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flight