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Numerical investigations on acoustic propagation effects for highly integrated intake ducts

Zimmermann, Patrick M. and Kolb, Alexander and Mancini, Simone and Rossignol, Karl-Stephane (2022) Numerical investigations on acoustic propagation effects for highly integrated intake ducts. In: 28th AIAA/CEAS Aeroacoustics Conference, 2022, pp. 1-14. American Institute of Aeronautics and Astronautics, Inc.. 28th AIAA/CEAS Aeroacoustics Conference, 14-17 June 2022, Southampton, UK. doi: 10.2514/6.2022-3099. ISBN 978-162410664-4.

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/6.2022-3099

Abstract

Aeroacoustic assessment of highly integrated propulsion systems is a challenging task at an early design stage and requires detailed physical understanding with validated numerical prediction capabilities. This work presents numerical studies of an UCAV configuration with a complex intake duct as a complementary analysis to measurements. The setup is based on the agile (unmanned) NATO air vehicle MULDICON UCAV (MULti-DIsciplinary CONfiguration) with an S-shaped intake duct to primarily shield the engine from radar. A laser-based sound source is modeled as monopole in the intake duct. The computation of the acoustic field is performed in the time domain with the Discontinuous Galerkin (DG) code DISCO++ developed by DLR. RANS mean flow fields are calculated with DLR’s TAU solver as background flow input for the aeroacoustic noise propagation. A parametric study is conducted for the monopole sound source. Dependencies of the noise propagation on the intake mass flow rate and the ambient flow velocity are investigated by directivities and spectral characteristics.

Item URL in elib:https://elib.dlr.de/189391/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical investigations on acoustic propagation effects for highly integrated intake ducts
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Zimmermann, Patrick M.Airbus Defence and SpaceUNSPECIFIEDUNSPECIFIED
Kolb, AlexanderAirbus Defence and SpaceUNSPECIFIEDUNSPECIFIED
Mancini, SimoneAirbus Defence and SpaceUNSPECIFIEDUNSPECIFIED
Rossignol, Karl-StephaneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:2022
Journal or Publication Title:28th AIAA/CEAS Aeroacoustics Conference, 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.2514/6.2022-3099
Page Range:pp. 1-14
Editors:
EditorsEmailEditor's ORCID iDORCID Put Code
UNSPECIFIEDAmerican Institute of Aeronautics and Astronautics, Inc.UNSPECIFIEDUNSPECIFIED
Publisher:American Institute of Aeronautics and Astronautics, Inc.
ISBN:978-162410664-4
Status:Published
Keywords:Aeroacoustics, UCAV, unmanned systeme, simulation, CAA, computational aeroacoustics
Event Title:28th AIAA/CEAS Aeroacoustics Conference
Event Location:Southampton, UK
Event Type:international Conference
Event Dates:14-17 June 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Unmanned Aerial Systems
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology
Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Rossignol, Karl-Stephane
Deposited On:02 Nov 2022 12:15
Last Modified:02 Nov 2022 12:18

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