Full Content is available to subscribers

Subscribe/Learn More  >

Velocity Measurements in a Combustor Undergoing Limit-Cycle Pressure Oscillations

[+] Author Affiliations
J. Li, S. Acharya

Louisiana State University, Baton Rouge, LA

Paper No. 2000-GT-0092, pp. V002T02A012; 13 pages
  • ASME Turbo Expo 2000: Power for Land, Sea, and Air
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Munich, Germany, May 8–11, 2000
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7855-2
  • Copyright © 2000 by ASME


Velocity measurements are reported in a swirl-stabilized spray combustor undergoing limit cycle pressure oscillations. The pressure-oscillations are a manifestation of the thermo-acoustic instability in the combustor (at 200Hz), and the goal of the present work is to understand the flow in a combustor with strong pressure oscillations. A second goal of the work is to provide data for the CFD modeling of self-excited combustion. The measurements have been made with a LDV for both the non-reacting case and the reacting flow case, and include velocity information for both the gas phase (with titanium dioxide seeding) and the droplet phase (no seeding).

Measurements reveal substantial increases in the axial and tangential velocities under reacting flow conditions. The swirl-induced recirculation zone is much stronger (higher negative velocities) with combustion. Unburnt droplets are observed as far downstream as Z/Ro = 0.72 (nearly 5cm from the injection nozzle). Significant enhancements in the turbulence levels are noted in the presence of combustion, and these are partly attributed to the thermoacoustic instability and strong pressure oscillations.

Copyright © 2000 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In