Accession Number : ADP008992

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

Corporate Author : KARLSRUHE UNIV (GERMANY F R) INST FUER THERMISCHE STROEMUNGSMASCHINEN

Personal Author(s) : Jeckel, R. ; Noll, B. ; Wittig, S.

Report Date : 23 JUL 1992

Pagination or Media Count : 6

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)

Descriptors :   *COMBUSTORS, *FLOW VISUALIZATION, GAS TURBINES, TIME DOMAIN, THREE DIMENSIONAL FLOW, EDDIES(FLUID MECHANICS), COMBUSTION CHAMBERS, FLAMES, COMBUSTION STABILITY, TURBULENCE, GERMANY.

Subject Categories : Jet and Gas Turbine Engines
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE