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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 2019 Forum. AIAA Propulsion and Energy 2019 Forum, 19. - 22. Aug. 2019, Indianapolis, IN, USA. DOI: 10.2514/6.2019-4116

Full text not available from this repository.

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

Abstract

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
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Costa Ruiz, EugeniEugeni.CostaRuiz (at) dlr.deUNSPECIFIED
Stark, RalfRalf.Stark (at) dlr.dehttps://orcid.org/0000-0003-1923-1901
General, StephanStephan.General (at) dlr.dehttps://orcid.org/0000-0001-5606-882X
Strauss, F.friedolin.strauss (at) dlr.dehttps://orcid.org/0000-0002-1385-4326
Schneider, DirkDirk.Schneider (at) dlr.dehttps://orcid.org/0000-0002-4785-4244
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Date:2019
Journal or Publication Title:AIAA Propulsion and Energy 2019 Forum
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2019-4116
Status:Published
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
Organizer:AIAA
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
Institute of Space Propulsion > Engineering
Deposited By: Hanke, Michaela
Deposited On:16 Dec 2019 08:54
Last Modified:13 Jan 2020 11:15

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