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

Sliphorst, M. and Gröning, S. and Knapp, Bernhard and Oschwald, Michael (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.

Item URL in elib:https://elib.dlr.de/72116/
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 AuthorsAuthors ORCID iD
Sliphorst, M.RA-RO LAUNSPECIFIED
Gröning, S.Stefan.Groening (at) dlr.deUNSPECIFIED
Knapp, BernhardBernhard.Knapp (at) dlr.dehttps://orcid.org/0000-0002-5714-7105
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Date:2011
Journal or Publication Title:Proceedings of the 49th AIAA ASM Meeting
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
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 > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:30 Nov 2011 10:08
Last Modified:01 Dec 2018 19:47

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