Acoustic Signature from Flames as a Combustion Diagnostic Tool

Abstract

A program was conducted to investigate the feasibility of using the combustion noise acoustic output as a non-intrusive diagnostic of some details of the combustion process. Investigated were an open premixed turbulent jet flame and a gas turbine combustor converted to run on propane. The analysis links the acoustic pressure fluctuations to the distribution of heat release rate fluctuations. Measurement of the sound field, yields in principle, the heat release rate fluctuation field. It was found, however, that the analytical methods for this inverse problem are too sensitive to small experimental uncertainties. Consequently, it appears that the method is not, in general feasible.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1983
Accession Number
ADA136447

Entities

People

  • Warren C. Strahle

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Absorption
  • Acoustic Measurement
  • Acoustic Signatures
  • Acoustics
  • Anechoic Chambers
  • Combustion
  • Combustors
  • Electromagnetic Radiation
  • Equations
  • Frequency
  • Gas Turbines
  • Heat Transfer
  • Integral Equations
  • Inverse Problems
  • Measurement
  • Military Research
  • Radiation

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Combustion science or combustion engineering.