Two-Dimensional Supersonic Jet Mixing of Air and Helium.

Abstract

This study investigated the mixing and flow field characteristics of helium and air using an array of two-dimensional Mach 3.0 nozzles. The study made use of schlieren photography, pressure measurements, and gas sampling for the analysis. Exit plane pressure ratios from 1.0 to 3.0 were investigated. Exit velocity ratios were assumed constant for all test conditions. Test equipment consisted of the nozzle array installed in a blow-down type system. Static pressure taps and total pressure probes were installed in the flow field downstream of the mixing nozzles to measure pressures. The probes were also used to capture gas samples. Pressure measurement results showed symmetry of the flow field. Gas samples and schlieren analysis indicated that mixing was a function of exit plane pressure ratio and distance from nozzle exit. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1978
Accession Number
ADA081899

Entities

People

  • Roy L. Bonney

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Boundary Layer
  • Cameras
  • Flow Fields
  • Fluid Dynamics
  • Instrumentation
  • Light Sources
  • Mach Number
  • Measurement
  • Photographs
  • Pressure Measurement
  • Solenoid Valves
  • Static Pressure
  • Test Equipment
  • Two Dimensional
  • Weapon Systems

Readers

  • Aerospace Test and Evaluation
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow