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A Simplified Model for the Investigation of Acoustically Driven Combustion InstabilitiesA simplified one-dimensional model of reactive flow is presented which captures features of aeropropulsion systems, including acoustically driven combustion instabilities. Although the resulting partial differential equations are one dimensional, they qualitatively describe observed phenomena, including, resonant frequencies and the admission of both steady and unsteady behavior. A number of simulations are shown which exhibit both steady and unsteady behavior, including flame migration and thermo acoustic instabilities. Finally, we present examples of unsteady flow resulting from fuel modulation.
Document ID
19990008961
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Paxson, Daniel E. (NASA Lewis Research Center Cleveland, OH United States)
Quinn, D. Dane (Akron Univ. Akron, OH United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1998
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NAS 1.15:208488
AIAA Paper 98-3764
E-11267
NASA/TM-1998-208488
Meeting Information
Meeting: Joint Propulsion
Location: Cleveland, OH
Country: United States
Start Date: July 12, 1998
End Date: July 15, 1998
Sponsors: American Society for Electrical Engineers, Society of Automotive Engineers, Inc., American Society of Mechanical Engineers, American Inst. of Aeronautics and Astronautics
Funding Number(s)
PROJECT: RTOP 523-26-13
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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