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Computational chain for virtual fly-over simulations applied to fan noise

Mößner, Michael and Kissner, Carolin and Delfs, Jan Werner and Enghardt, Lars (2018) Computational chain for virtual fly-over simulations applied to fan noise. In: 24th AIAA/CEAS Aeroacoustics Conference, 2018. CEAS/AIAA Aeroacoustics Conference 2018, 25.-29. Jun. 2018, Atlanta, USA. ISBN 978-162410560-9

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Abstract

To ensure an aircraft’s compliance with noise regulations, expensive fly-over tests are required. Up until now, there is no numerical alternative to the experimental Standard procedure. In this paper, a step is taken toward enabling a ”virtual fly-over” in the future. The authors restricted themselves to the study of tonal fan noise from ist generation in the fan stage to its propagation to observer positions at ground level. As one large simulation tackling the entire problem at full-scale Reynolds numbers would have been computationally too demanding, a computational chain is established. This computational chain splits the large task into smaller subtasks linked by interfaces. Each of these subtasks can then be solved by a suitable calculation technique. For the presented case, the subtasks include the mean flow computation, the noise generation, and the noise propagation. The computational chain - including the involved tools and interfaces - is discussed in detail and first results are presented for isolated and installed engine configurations.

Item URL in elib:https://elib.dlr.de/125441/
Document Type:Conference or Workshop Item (Speech)
Title:Computational chain for virtual fly-over simulations applied to fan noise
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mößner, Michaelmichael.moessner (at) dlr.deUNSPECIFIED
Kissner, Carolincarolin.kissner (at) dlr.deUNSPECIFIED
Delfs, Jan Wernerjan.delfs (at) dlr.deUNSPECIFIED
Enghardt, Larslars.enghardt (at) dlr.deUNSPECIFIED
Date:June 2018
Journal or Publication Title:24th AIAA/CEAS Aeroacoustics Conference, 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
ISBN:978-162410560-9
Status:Published
Keywords:virtual fly-over, fan noise, high-fidelity simulations
Event Title:CEAS/AIAA Aeroacoustics Conference 2018
Event Location:Atlanta, USA
Event Type:international Conference
Event Dates:25.-29. Jun. 2018
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Berlin-Charlottenburg , Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Institute of Propulsion Technology > Engine Acoustic
Deposited By: Mößner, Michael
Deposited On:03 Jan 2019 13:41
Last Modified:03 Jan 2019 13:41

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