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An Annular Pulsed Detonation Combustor Mockup: System Identification and Misfiring Detection

[+] Author Affiliations
Sascha Wolff, Rudibert King

Technische Universität Berlin, Berlin, Germany

Paper No. GT2015-42022, pp. V04AT04A004; 12 pages
doi:10.1115/GT2015-42022
From:
  • ASME Turbo Expo 2015: Turbine Technical Conference and Exposition
  • Volume 4A: Combustion, Fuels and Emissions
  • Montreal, Quebec, Canada, June 15–19, 2015
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5668-0
  • Copyright © 2015 by ASME

abstract

An annular pulsed detonation combustor basically consists of a number of detonation tubes which are firing in a predetermined sequence into a common downstream annular plenum. Fluctuating initial conditions and fluctuating environmental parameters strongly affect the detonation. Operating such a set-up without misfiring is delicate. Misfiring of individual combustion tubes will significantly lower performance or even stop the engine. Hence, an operation of such an engine requires a misfiring detection.

Here, a model-based approach is used which exploits the innovation sequence calculated by a Kalman filter. The model necessary for the Kalman filter is determined based on a modal identification technique. A surrogate, nonreacting experimental set-up is considered in order to develop and test these methods.

Copyright © 2015 by ASME

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