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A further Note on Active Control of Combustion instabilities Based on Hysteresis

Isella, G. and Seywert, C. and Culick, F. E. C. and Zukoski, E. E. (1997) A further Note on Active Control of Combustion instabilities Based on Hysteresis. Combustion Science and Technology, 126 (1-6). pp. 381-388. ISSN 0010-2202. http://resolver.caltech.edu/CaltechAUTHORS:20101118-151443293

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Abstract

Hysteretic behaviour, as found in the dump combustor facility at GALCIT, allows nonlinear active control of the instability, demonstrated recently by Knoop et al. (1996). As in that work, pulses of secondary fuel, based on a simple on/off control law, have been successfully used to drive the transition between the two modes present in the hysteretic region, thereby reducing the amplitude of the pressure oscillations with minimal use of fuel. In order to clarify the origin of the phenomenon, high speed shadowgraph images of the flowfield during the transition between 'unstable' and stable burning have been taken, showing distinctive features that may help in modeling the observed behaviour. A preliminary parametric study (type of injector, duration of pulses, type of secondary flow) has also been conducted, showing that the transition can be obtained over a broad range of conditions.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1080/00102209708935682 DOIUNSPECIFIED
http://www.informaworld.com/10.1080/00102209708935682PublisherUNSPECIFIED
Additional Information:© 1997 OPA (Overseas Publishers Association) Amsterdam B.V. Published in The Netherlands under license by Gordon and Breach Science Publishers. Received 21 August 1996; In final form 25 March 1997. This work was supported in part by the California Institute of Technology; partly by ENEL (Dr. Giancarlo Benelli, Program Manager); and partly by the Air Force Office of Scientific Research, AFOSR Contract No. F49620-95 -1-0272 (Dr. Mitat Birkan, Program Manager); and partly by the Department of Energy Grant DE-FC21-92MC2906.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
CaltechUNSPECIFIED
Ente Nazionale per l'Energia eLettrica (ENEL) (Italy)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)F49620-95-1-0272
Department of EnergyDE-FC21-92MC2906
Subject Keywords:Hysteresis; combustion instability
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
Record Number:CaltechAUTHORS:20101118-151443293
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101118-151443293
Official Citation:A further Note no Active Cpmtrol of Combustion instabilities Besed on Hyeteresis G. Isella; C. Seywert; F. E. C. Culick; E. E. Zukoski Pages 381 – 388
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:20908
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:03 Dec 2010 21:53
Last Modified:26 Dec 2012 12:39

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