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Combustion instability coupling mechanisms between acoustics and LOx/CH4 spray flames

Sliphorst, M. and Gröning, S. and Knapp, B. and Oschwald, M. (2011) Combustion instability coupling mechanisms between acoustics and LOx/CH4 spray flames. In: Proceedings of the 49th AIAA ASM Meeting (AIAA 2011-327). 49th AIAA Aerospace Science Meeting, 4. - 7. Jan. 2011, Orlando, Florida, USA.

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Abstract

The effects of acoustic perturbations on a LOx/CH4 spray flame have been experimentally investigated. The main objective was to learn more about the interaction between combustion chamber processes and the externally enforced acoustic field. With an in-depth analysis of dynamic pressure signals and optical diagnostics of the flame, several results have been obtained which are presented in this paper. It was possible to spatially resolve where in the combustion chamber the response of the flame to the acoustic wave was highest. All results were consistent and allowed a conclusion with respect to whether the coupling mechanism dominantly responsible for the interaction between acoustic field and combustion is pressure or velocity driven.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Combustion instability coupling mechanisms between acoustics and LOx/CH4 spray flames
Authors:
AuthorsInstitution or Email of Authors
Sliphorst, M.RA-RO LA
Gröning, S.Stefan.Groening@dlr.de
Knapp, B.Bernhard.Knapp@dlr.de
Oschwald, M.Michael.Oschwald@dlr.de
Date:2011
Journal or Publication Title:Proceedings of the 49th AIAA ASM Meeting
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:combustion instability, acoustics
Event Title:49th AIAA Aerospace Science Meeting
Event Location:Orlando, Florida, USA
Event Type:international Conference
Event Dates:4. - 7. Jan. 2011
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Antriebsystemtechnik - Schubkammertechnologie und Hochdruckverbrennung (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Raketenantriebe
Deposited By: Michaela Hanke
Deposited On:30 Nov 2011 10:08
Last Modified:23 Jan 2012 11:45

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