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Modeling for Active Control of Combustion and Thermally Driven Oscillations

Culick, F. E. C. and Lin, W. H. and Jahnke, C. C. and Sterling, J. D. (1991) Modeling for Active Control of Combustion and Thermally Driven Oscillations. In: Proceedings of the 1991 American Control Conference. IEEE , Piscataway, NJ, pp. 2939-2948. ISBN 0-87942-565-2.

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Organized oscillations excited and sustained by high densities of energy release in combustion chambers have long caused serious problems in development of propulsion systems. The amplitudes often become sufficiently large to cause unacceptable structural vibrations. Because the oscillations are self-excited, they reach limiting amplitudes (limit cycles) only because of the action of nonlinear processes. Traditionally, satisfactory behavior has been achieved through a combination of trial-and-error design and testing, with control always involving passive means: geometrical modifications, changes of propellant composition, or devices to enhance dissipation of acoustic energy. Active control has been applied only to small-scale laboratory devices, but the limited success suggests the possibility of serious applications to full-scale propulsion systems. Realization of that potential rests on further experimental work, combined with deeper understanding of the mechanisms causing the oscillations and of the physical behavior of the systems. Effective design of active control systems will require faithful modeling of the relevant processes over broad frequency ranges covering the spectra of natural modes. This paper will cover the general character of the linear and nonlinear behavior of combustion systems, with special attention to acoustics and the mechanisms of excitation. The discussion is intended to supplement the paper by Doyle et al. concerned primarily with controls issues and the observed behavior of simple laboratory devices.

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Additional Information:© 1991, IEEE. Date of Current Version :10 March 2009. This work was partially supported by the Office of Naval Research, Contract N00014-89-J-1753, the Air Force Office of Scientific Research, Grant No. 90-0188 and by Caltech funds.
Group:Guggenheim Jet Propulsion Center, GALCIT
Funding AgencyGrant Number
Office of Naval ResearchN00014-89-J-1753
Air Force Office of Scientific Research90-0188
Caltech fundsUNSPECIFIED
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Guggenheim Jet Propulsion CenterUNSPECIFIED
Record Number:CaltechAUTHORS:20101130-075321569
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Official Citation:Culick, F. E. C.; Lin, W. H.; Jahnke, C. C.; Sterling, J. D.; , "Modeling for Active Control of Combustion and Thermally Driven Oscillations," American Control Conference, 1991 , vol., no., pp.2939-2948, 26-28 June 1991 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21050
Deposited By: Ruth Sustaita
Deposited On:10 Dec 2010 00:34
Last Modified:03 Oct 2019 02:19

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