Noncondensing Round Turbulent Gas Jets in Liquids.

Abstract

The structure and mixing properties of noncondensing round turbulent air jets in still water was investigated experimentally, considering both subsonic and sonic underexpanded (with underexpanded ratios up to 8:1) jet exit conditions. Measurements included flow visualization, using flash and high-speed motion-picture photography; mean void fraction distributions, using deconvoluted gamma-ray absorption measurements; mean entrainment velocities, using laser-Doppler anemometry; and mean static pressures along the axis, using a static pressure probe. Analysis was also undertaken to help interpret the measurements, based on the locally-homogeneous-flow approximation (relative velocity differences between the phases neglected) and an effective-adapted-jet approximation for treating the mixing properties of the underexpanded jets. Keywords: Multiphase flow, Gas jets, Liquids, Compressible turbulent jets.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1987
Accession Number
ADA191191

Entities

People

  • E. Loth
  • Gerard M. Faeth

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Argon Lasers
  • Boundary Layer
  • Buoyancy
  • Cameras
  • Computational Fluid Dynamics
  • Detectors
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Hydrodynamics
  • Mechanical Engineering
  • Photographs
  • Photography
  • Pressure Distribution
  • Pressure Gages
  • Pressure Measurement
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Directed Energy