Three Dimensional Time-Resolved Velocity Measurements in a Gas Turbine Model Combustor,

Abstract

Detailed time-resolved velocity measurements of the reacting and nonreacting flow in a model combustor are presented. The setup of the analyzed new combustion chamber is introduced. It comprises an alternative design concept for the stabilization: Instead of a swirler four radical air injecting jets are used. For the analysis of the velocity field a two channel dual beam LDA was used. Measurements of the reacting and the nonreacting flow show that turbulence is strongly affected by chemical reaction. For an advanced understanding of the extreme high turbulence levels a time resolved analysis of the velocity is given. Generally it was found that not only the turbulence level was increased by the chemical reaction, but also that the time-scale of the velocity fluctuations was moved to higher frequencies. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 23, 1992
Accession Number
ADP008992

Entities

People

  • B. Noll
  • R. Jeckel
  • S. Wittig

Tags

DTIC Thesaurus Topics

  • Chambers
  • Chemical Reactions
  • Combustion
  • Combustion Chambers
  • Combustors
  • Exothermic Reactions
  • Fluid Mechanics
  • Fluid Statics
  • Gas Turbines
  • Ignition
  • Ignition Lag
  • Measurement
  • Mechanics
  • Stratified Fluids
  • Three Dimensional
  • Turbulence

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Internal Combustion Engine (ICE) Technology.