Full Content is available to subscribers

Subscribe/Learn More  >

Analysis of Thermo-Acoustic Properties of Combustors and Afterburners

[+] Author Affiliations
Guillaume Jourdain, Lars-Erik Eriksson

Chalmers University of Technology, Gothenburg, Sweden

Paper No. GT2010-22339, pp. 269-278; 10 pages
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 2: Combustion, Fuels and Emissions, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4397-0 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME


Predicting thermo-acoustic instabilities in combustion chambers remains an important issue. These instabilities mainly contain hydrodynamic and acoustic waves and can lead to severe structural damage if the energy feedback due to combustion builds up high amplitudes. In order to predict their behavior, linearized flow solvers have been developed in combination with an Arnoldi extraction method to compute several of the least damped eigenmodes of combustor flows. This technique has been validated against an atmospheric combustor test rig, named Validation Rig I, in which both low frequency buzz and high frequency screech modes could be induced. Both types of modes have also been found computationally, by matching frequencies and modes shapes. A post-processing mode stability analysis procedure has also been developed with which any computed eigenmode may be analyzed with respect to the Rayleigh criterion. The results of the mode stability analysis are consistent with the corresponding unsteady RANS simulations, but not with the experimental data. Understanding the modes coupled with combustion can provide useful knowledge regarding the the possibility to suppress them.

Copyright © 2010 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