EXPERIMENTAL STUDY OF THE TURBULENT MIXING OF SUBSONIC AXISYMMETRIC GAS STREAMS

Abstract

An experimental study of the turbelent mixing of subsonic axisymmetric gas streams was conducted. Hydrogen-air and air-air mixing systems were studied, and the velocity ratio (jet velocity/outer stream velocity) was varied from 2.4 to 6.3. Special emphasis is placed on (1) the centerline decay and radial profile shapes of composition, velocity, and total enthalpy and (2) the relationships between the turbulent transport of mass, momentum, and energy. The major conclusions drawn for this particular set of conditions are (1) for the hydrogen-air system the centerline decay decreases with increasing velocity ratio, (2) profile similarity of composition, velocity, and total enthalpy is a valid assumption, (3) there is a definite relationship between the transport of momentum and energy which is not compatible with a constant Prandtl number, and (4) unity Lewis number is a valid assumption. The experimental data obtained are tabulated for the benefit of other investigators.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1968
Accession Number
AD0672975

Entities

People

  • D. E. Chriss

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • C4I
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Barometric Pressure
  • Boundary Layer
  • Data Reduction
  • Experimental Data
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Layers
  • Measurement
  • Prandtl Number
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Measurement
  • Static Pressure
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Combustion science or combustion engineering.
  • Fluid Dynamics.