Break Up of Vortex Rings in Impinging Turbulent Jet Flames.

Abstract

This report describes progress on the study of large eddies in flames which has benefited from support by ERO, U.S. Army. The work has clearly demonstrated the existence and importance of the coherent large eddy motions in (1) Gas flames impinging on a flat plate; (2) Free gaseous diffusion flames, and (3) An axisymmetric fuel spray. The measurement programme has developed and used: (1) Simultaneous measurements on velocity, temperature and ionisation level, with the derivation of covariances and spectra; (2) Space-time cross-correlations, using pairs of ionisation probes or thermocouples; (3) Arrays of axially spaced thermocouples, to 'follow' eddies downstreams; and (4) A novel 'top-hat' light-distribution LDA Particle Sizing System for simultaneous measurements of droplet sizes and velocities. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA127384

Entities

People

  • A. J. Yule

Organizations

  • University of Sheffield

Tags

DTIC Thesaurus Topics

  • Cross Correlation
  • Data Science
  • Detection
  • Engineering
  • Flames
  • Flow
  • Flow Visualization
  • Fuel Sprays
  • Information Science
  • Ionization
  • Jet Flames
  • Jet Flow
  • Measurement
  • Mechanical Engineering
  • New York
  • Sprays
  • Thermocouples

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Fluid Dynamics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster