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Numerical Acoustic Prediction of a Quadratic Supersonic Jet Using CAA Hybrid Methods

Costa Ruiz, Eugeni and Stark, Ralf and General, Stephan and Strauss, F. and Schneider, Dirk and Oschwald, Michael (2019) Numerical Acoustic Prediction of a Quadratic Supersonic Jet Using CAA Hybrid Methods. In: AIAA Propulsion and Energy Forum and Exposition, 2019. AIAA Propulsion and Energy 2019 Forum, 19. - 22. Aug. 2019, Indianapolis, IN, USA. doi: 10.2514/6.2019-4116. ISBN 978-162410590-6.

Full text not available from this repository.

Official URL: https://arc.aiaa.org/doi/10.2514/6.2019-4116


A numerical simulation of a rectangular supersonic nozzle was conducted to predict the acoustic emissions produced by the jet. The numerical results were compared with experimental measurements. The best agreement between the experiment and simulation was found within the lateral region of the jet. It is the deciding region of noise emission in the test facilities as it represents the gap between rocket nozzle exit and the guide tube inlet. The results were less satisfactory, for the microphone positions within the down-stream region of the jet, where the noise emissions are typically damped by water injection. The simulation under-predicted the overall sound pressure levels. The results confirm the expected limitations for the underlying model used in the simulation. The work is a first step to gain experience prior to simulating a subscale rocket engine in combination with and without a guide tube.

Item URL in elib:https://elib.dlr.de/132835/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical Acoustic Prediction of a Quadratic Supersonic Jet Using CAA Hybrid Methods
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Stark, RalfUNSPECIFIEDhttps://orcid.org/0000-0003-1923-1901UNSPECIFIED
General, StephanUNSPECIFIEDhttps://orcid.org/0000-0001-5606-882XUNSPECIFIED
Strauss, F.UNSPECIFIEDhttps://orcid.org/0000-0002-1385-4326UNSPECIFIED
Schneider, DirkUNSPECIFIEDhttps://orcid.org/0000-0002-4785-4244UNSPECIFIED
Oschwald, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-9579-9825UNSPECIFIED
Journal or Publication Title:AIAA Propulsion and Energy Forum and Exposition, 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:noise emission, rocket nozzle
Event Title:AIAA Propulsion and Energy 2019 Forum
Event Location:Indianapolis, IN, USA
Event Type:international Conference
Event Dates:19. - 22. Aug. 2019
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
Institute of Space Propulsion > Engineering
Deposited By: Hanke, Michaela
Deposited On:16 Dec 2019 08:54
Last Modified:14 Mar 2022 14:12

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