0
Research Papers: Gas Turbines: Controls, Diagnostics, and Instrumentation

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

[+] Author and Article Information
Sascha Wolff

Chair of Measurement and Control,
Department of Process Engineering,
Technische Universität Berlin,
Hardenbergstr. 36a,
Berlin 10623, Germany
e-mail: sascha.wolff@tu-berlin.de

Rudibert King

Professor
Chair of Measurement and Control,
Department of Process Engineering,
Technische Universität Berlin,
Hardenbergstr. 36a,
Berlin 10623, Germany
e-mail: rudibert.king@tu-berlin.de

1Corresponding author.

Contributed by the Controls, Diagnostics and Instrumentation Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 15, 2015; final manuscript received August 5, 2015; published online October 13, 2015. Editor: David Wisler.

J. Eng. Gas Turbines Power 138(4), 041603 (Oct 13, 2015) (8 pages) Paper No: GTP-15-1326; doi: 10.1115/1.4031320 History: Received July 15, 2015; Revised August 05, 2015

An annular pulsed detonation combustor (PDC) 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 setup 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 setup is considered in order to develop and test these methods.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Annular gap with 12 circular holes in the front plate (at z=0) for the connection of surrogate firing tubes/actuators. The dimensions of the system are given by: L = 0.6 m, aR = 0.32 m, R = 0.4 m, and a = 0.8.

Grahic Jump Location
Fig. 2

Experimental setup with DSP, amplifiers, actuators, and sensors

Grahic Jump Location
Fig. 5

Frequency responses for the first azimuthal cosine base vector of the experimental plat calculated using a spectral analysis of the identified model which is given by Eqs. (33) and(34)

Grahic Jump Location
Fig. 4

Modal identification scheme

Grahic Jump Location
Fig. 3

(a) Particle velocity at a membrane measured by a vibrometer during a simulated detonation event. (b) Normalized integral of the power spectral density of the signal in (a).

Grahic Jump Location
Fig. 6

Misfiring detection experiment

Tables

Errata

Discussions

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 Journal Articles
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