An Experimental Investigation of Subsonic Coaxial Free Turbulent Mixing

Abstract

Turbulent coaxial air-air mixing and hydorgen-air mixing were studied. The ratio of outer stream to jet velocity was varied from 0.12 to 1.52 for the air-air mixing streams and from 0.16 to 0.42 for the hydrogen-air systems. Special emphasis was placed on the determination of the turbulent transport properties (especially the eddy viscosity and the Prandtl number) from the mean flow field measurements by use of an integral technique. Radial and axial profiles of velocity, concentration, shear stress, and eddy viscosity are presented, as well as radial profiles of the turbulent Prandtl number and representative static pressure profiles.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1972
Accession Number
AD0737098

Entities

People

  • D. E. Chriss
  • R. A. Paulk

Organizations

  • Arnold Engineering Development Complex

Tags

DTIC Thesaurus Topics

  • Air Force
  • Barometric Pressure
  • Boundary Layer
  • Computer Programs
  • Control Surfaces
  • Data Reduction
  • Flow
  • Fluid Dynamics
  • Measurement
  • Prandtl Number
  • Pressure Distribution
  • Pressure Measurement
  • Shear Stresses
  • Static Pressure
  • Transport Properties
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Combustion and Flow Dynamics.