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Embedded WMLES of transonic buffet on a nacelle-aircraft configuration

Herr, Marius and Spinner, Sebastian and Probst, Axel and Radespiel, Rolf and Rudnik, Ralf (2023) Embedded WMLES of transonic buffet on a nacelle-aircraft configuration. In: AIAA SciTech 2023 Forum, pp. 1-15. AIAA. AIAA Scitech 2023 Forum, 2023-01-23 - 2023-01-27, National Harbor, MD. doi: 10.2514/6.2023-0246.

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/6.2023-0246


Research on a long-range transport aircraft with Ultra High Bypass Ratio (UHBR) nacelles under transonic flow conditions is presented. Therefore different numerical as well as experimental methodologies are employed. A major research issue is the aerodynamic interaction of the flow field with UHBR nacelle, pylon, fuselage and wing lower side. The interactions of transonic shocks with the boundary layer are analyzed by RANS simulations with regard to flow separation and flow recirculation. Further investigations are performed for an isolated shock boundary layer interaction at the nacelle lower side with a scale resolving simulation approach. Therefore the embedded wall modeled LES (EWMLES) method in combination with a synthetic turbulence generator is employed. This allows to analyze the dynamics of the transonic shock front with regard to shock buffet. The results are compared to experimental data of pressure sensors and unsteady pressure sensitive paint (PSP) measurements obtained in wind tunnel testing at the the European Transonic Windtunnel (ETW). The impact of the angle of attack on the shock boundary layer interaction is assessed by numerical and experimental data showing consistent results with regard to the shock positions and shock dynamics.

Item URL in elib:https://elib.dlr.de/196532/
Document Type:Conference or Workshop Item (Speech)
Additional Information:View video presentation: https://doi.org/10.2514/6.2023-0246.vid
Title:Embedded WMLES of transonic buffet on a nacelle-aircraft configuration
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Herr, MariusUNSPECIFIEDhttps://orcid.org/0000-0003-3970-4390UNSPECIFIED
Spinner, SebastianUNSPECIFIEDhttps://orcid.org/0000-0002-3661-6814UNSPECIFIED
Date:19 January 2023
Journal or Publication Title:AIAA SciTech 2023 Forum
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-15
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:Scale resolving simulation, Aircraft configuration, Ultra High Bypass Ratio (UHBR) nacelle, transonic flow, shock boundary layer interaction, embedded wall modeled LES
Event Title:AIAA Scitech 2023 Forum
Event Location:National Harbor, MD
Event Type:international Conference
Event Start Date:23 January 2023
Event End Date:27 January 2023
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Aircraft and  Validation
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Herr, Marius
Deposited On:16 Aug 2023 09:08
Last Modified:24 Apr 2024 20:56

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