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Combustion Instability-Coupling Mechanisms Between Liquid Oxygen/Methane Spray Flames and Acoustics

Sliphorst, M. and Knapp, Bernhard and Gröning, S. and Oschwald, Michael (2012) Combustion Instability-Coupling Mechanisms Between Liquid Oxygen/Methane Spray Flames and Acoustics. Journal of Propulsion and Power. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.B34339. ISSN 0748-4658.

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The effects of acoustic perturbations on a liquid oxygen/methane spray flame have been experimentally investigated. The main objective was to learn more about the interaction between combustion-chamber processes and an externally enforced acoustic field. With an in-depth analysis of dynamic-pressure signals and optical diagnostics of the flame, several results have been obtained and are presented in this paper. It was possible to spatially resolve the location in the combustion chamber where the response of the flame to the acoustic wave was highest. By reconstructing the acoustic pressure and velocity fields, and comparing these with excited hydroxyl radical, chemiluminescence (OH*) images of the flame, it could be shown that the flame predominantly reacts on the velocity fluctuations and not on the pressure fluctuations. All results were consistent and allowed for the conclusion that the coupling mechanism between combustion and acoustics in this experimental setup is predominantly velocity driven.

Item URL in elib:https://elib.dlr.de/80558/
Document Type:Article
Title:Combustion Instability-Coupling Mechanisms Between Liquid Oxygen/Methane Spray Flames and Acoustics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Knapp, BernhardUNSPECIFIEDhttps://orcid.org/0000-0002-5629-1869UNSPECIFIED
Oschwald, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-9579-9825UNSPECIFIED
Date:November 2012
Journal or Publication Title:Journal of Propulsion and Power
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:combustion instability, acoustic
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Antriebsystemtechnik - Schubkammertechnologie (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:11 Jan 2013 13:30
Last Modified:07 Nov 2023 12:56

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