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Experimental and numerical study of transcritical oxygen-hydrogen rocket flame response to transverse acoustic excitation

Beinke, Scott and Hardi, Justin and Banuti, Daniel and Karl, Sebastian and Dally, Bassam and Oschwald, Michael (2020) Experimental and numerical study of transcritical oxygen-hydrogen rocket flame response to transverse acoustic excitation. Proceedings of the Combustion Institute. Elsevier. doi: 10.1016/j.proci.2020.05.027. ISSN 1540-7489.

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Official URL: https://www.sciencedirect.com/science/article/pii/S1540748920300717?via%3Dihub


The response of a transcritical oxygen-hydrogen flame to transverse acoustic velocity was investigated using a combination of experimental analyses and numerical modelling. The experiment was conducted on a rectangular rocket combustor with shear coaxial injectors and continuously forced transverse acoustic field. Simultaneous high-speed shadowgraph and filtered OH* radiation images were collected and reduced using dynamic mode decomposition in order to characterise the flame response to the acoustic disturbance. CFD modelling of a representative single injector under forcing conditions was carried out to gain insights into the three-dimensional features of the reacting flow field. Invisible in the 2D projection, the model reveals that the excited LOX jet develops into a flattened and widened structure normal to the imposed acoustic velocity. The comparison of co-located structures allowed features in the imaging to be attributed to the deformation and transverse displacement of lower density oxygen surrounding the denser liquid oxygen core by the transverse acoustic velocity.

Item URL in elib:https://elib.dlr.de/137644/
Document Type:Article
Title:Experimental and numerical study of transcritical oxygen-hydrogen rocket flame response to transverse acoustic excitation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Hardi, JustinUNSPECIFIEDhttps://orcid.org/0000-0003-3258-5261UNSPECIFIED
Banuti, DanielUNSPECIFIEDhttps://orcid.org/0000-0002-5469-5704UNSPECIFIED
Karl, SebastianUNSPECIFIEDhttps://orcid.org/0000-0002-5558-6673UNSPECIFIED
Dally, BassamUniversity of Adelaide, School of Mechanical Engineering, AustraliaUNSPECIFIEDUNSPECIFIED
Oschwald, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-9579-9825UNSPECIFIED
Journal or Publication Title:Proceedings of the Combustion Institute
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:transcritical combustion; rocket engine; combustion instability
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 - Reusable Space Systems and Propulsion Technology
Location: Göttingen , Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Hanke, Michaela
Deposited On:19 Nov 2020 08:18
Last Modified:23 Oct 2023 14:13

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