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Pulsed Instabilities in Combustion Chambers

Burnley, V. and Swenson, G. and Culick, F. E. C. (1995) Pulsed Instabilities in Combustion Chambers. AIAA Papers, AIAA-95-2430. AIAA .

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A pulsed or "triggered" instability occurs when pressure oscillations develop in a linearly stable combustion system after being subjected to a sufficiently large disturbance. Such true nonlinear instabilities usually occur as subcritical bifurcations in dynamical systems theory. Understanding which nonlinear processes can lead to subcritical bi~urcations is the focus of this work. Earlier work with the approximate analysis used here has shown convincingly that nonlinear acoustics alone does not contain the phenomenon of pulsed instabilities; evidently some other nonlinear contribution must also be included. An extensive experimental and numerical investigation conducted by Baum and Levine strongly suggests that nonlinear combustion is required. Using models of pressure and velocity coupling, the current work studies the effect of nonlinear combustion on the behavior of the system.

Item Type:Report or Paper (Technical Report)
Additional Information:© 1995, American Institute of Aeronautics and Astronautics. This work was partly supported by the Palace Knight Program of the U. S. Air Force, and partly by the California Institute of Technology, Pasadena, California.
Group:Guggenheim Jet Propulsion Center
Funding AgencyGrant Number
Palace Knight Program of the U. S. Air ForceUNSPECIFIED
California Institute of TechnologyUNSPECIFIED
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Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion Center378
Record Number:CaltechAUTHORS:20101119-133446852
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:20920
Deposited By: Ruth Sustaita
Deposited On:19 Nov 2010 22:37
Last Modified:26 Dec 2012 12:39

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