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Joint experimental, LES and Helmholtz analysis of self-excited combustion instabilities in a hydrogen-oxygen rocket combustor

Douasbin, Quentin and Gröning, Stefan and Urbano, Annafederica and Selle, Laurent and Hardi, Justin and Armbruster, Wolfgang and Oschwald, Michael (2016) Joint experimental, LES and Helmholtz analysis of self-excited combustion instabilities in a hydrogen-oxygen rocket combustor. Thermoacoustic Instabilities in Gas Turbines and Rocket Engines: Industry meets Academia, 2016, 30.05. - 01.06.2016, Munich, Germany.

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Abstract

Self-excited combustion instabilities of the first tangential mode have been observed in a research combustor operated with hydrogen and oxygen in cryogenic state as propellants. A detailed analysis of this unstable mode is conducted and the experimental observations are compared with numerical simulations. A high fidelity Large-Eddy Simulation together with an acoustic eigenmode computation performed with a Helmholtz solver give complementary information on the mechanisms driving the instability. A methodology for the 3D reconstruction of the acoustic field is presented.

Item URL in elib:https://elib.dlr.de/133479/
Document Type:Conference or Workshop Item (Speech)
Title:Joint experimental, LES and Helmholtz analysis of self-excited combustion instabilities in a hydrogen-oxygen rocket combustor
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Douasbin, QuentinInstitut de Mecanique des Fluides de Toulouse (IMFT), FranceUNSPECIFIED
Gröning, StefanInstitut für Raumfahrtantriebe, DLR Lampoldshausen, DUNSPECIFIED
Urbano, AnnafedericaSafran Tech, E&P, FranceUNSPECIFIED
Selle, LaurentInstitut de Mecanique des Fluides de Toulouse (IMFT), FranceUNSPECIFIED
Hardi, JustinJustin.Hardi (at) dlr.dehttps://orcid.org/0000-0003-3258-5261
Armbruster, WolfgangWolfgang.Armbruster (at) dlr.dehttps://orcid.org/0000-0002-4859-4173
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Date:2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:combustion instabilities, rocket engines, hydrogen/oxygen, LES, Helmholtz solver
Event Title:Thermoacoustic Instabilities in Gas Turbines and Rocket Engines: Industry meets Academia, 2016
Event Location:Munich, Germany
Event Type:international Conference
Event Dates:30.05. - 01.06.2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Antriebsystemtechnik - Schubkammertechnologie
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:14 Jan 2020 08:44
Last Modified:14 Jan 2020 08:44

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