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Concentration Fluctuations in Turbulent Cross Jet Mixing FREE

[+] Author Affiliations
G. E. Andrews, U. S. Abdul Hussain

The University of Leeds, Leeds, UK

Paper No. 92-GT-346, pp. V003T06A035; 9 pages
doi:10.1115/92-GT-346
From:
  • ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Cologne, Germany, June 1–4, 1992
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7895-8
  • Copyright © 1992 by ASME

abstract

Concentration fluctuations were investigated using a water tunnel with a separate salt-water solution as a ‘fuel’ tracer flow. A fine electrode was used to detect the concentration of the tracer from the local conductivity. The frequency response of 0.4 by 1 mm probe tip was 10 kHz. An impinging axial/radial jet configuration was studied as this is a key element in some burner and gas turbine low emission combustor designs. Mixing was complete to within 5% by six axial hole diameters, an order of magnitude improvement on single jet mixing. The mixing traverses close to the jets demonstrated the importance of the method of fuel injection on the mixing process. The turbulent scalar mixing results are a suitable data set for CFD code validation of isothermal jet mixing.

Copyright © 1992 by ASME
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