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A Validation Program for Dynamic High-Lift System Aerodynamics

Wild, Jochen and Strüber, Henning and Moens, Frédéric and van Rooijen, Bart and Maseland, Hans (2022) A Validation Program for Dynamic High-Lift System Aerodynamics. In: 8th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS Congress 2022, pp. 1-15. SciPedia. ECCOMAS Congress 2022, 2022-06-05 - 2022-06-09, Oslo, Norwegen. doi: 10.23967/eccomas.2022.033. ISSN 2696-6999.

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Official URL: https://www.scipedia.com/public/Wild_et_al_2022a


The feasibility of laminar flow control technology for future wing is bound to the development of a leading edge high-lift system that complies with the requirements on smooth surfaces to enable maintaining the laminar boundary layer flow, such as a Krueger flap. Although in principle the aerodynamic performance of a Krueger flap is known, the unsteady behaviour of the flow during deployment and retraction is completely unknown. This is as even more important as during deployment the Krueger flap is exposed to highly unfavourable positions perpendicular to the flow. To mitigate the risk of unfavourable aircraft behaviour, it is therefore expected that a Krueger flap has to be deflected significantly fast and may trigger unsteady aerodynamic effects. The European H2020 project UHURA, running from September 2018 to August 2022, has been focusing on the unsteady flow behaviour around such high-lift system and will first time deliver a deeper understanding of critical flow features at this type of high-lift device during their deployment and retraction together with a validated numerical procedure for its simulation. UHURA performed detailed experimental measurements in several wind tunnels to obtain a unique data set for validation purposes of Computational Fluid Dynamics (CFD) software, including detailed flow measurements by Particle Image Velocimetry (PIV) and other optical measurement technologies. Advanced CFD methods promising significant improvements in the design lead time have been applied and validated against this database to obtain efficient and reliable prediction methods for design. This first contribution within the Special Technology Session provides an overview on the project. While the simulation activities are detailed in the forthcoming presentations, this presentation focusses on the experiments conducted to obtain a unique database for the validation of simulation methods for this kind of unsteady flows. Finally, an outlook is given on the validation and exploitation methodology applied in the last period of the project.

Item URL in elib:https://elib.dlr.de/187410/
Document Type:Conference or Workshop Item (Speech)
Title:A Validation Program for Dynamic High-Lift System Aerodynamics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wild, JochenUNSPECIFIEDhttps://orcid.org/0000-0002-2303-3214UNSPECIFIED
Strüber, HenningAirbus Operations GmbH, Bremen, GermanyUNSPECIFIEDUNSPECIFIED
van Rooijen, BartDNW, Marknese, The NetherlandsUNSPECIFIEDUNSPECIFIED
Maseland, HansRoyal NLR, Amsterdam, The NetherlandsUNSPECIFIEDUNSPECIFIED
Date:7 June 2022
Journal or Publication Title:8th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS Congress 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-15
Keywords:Aerodynamics, Unsteady, High-Lift Systems, CFD, Wind Tunnel, Validation
Event Title:ECCOMAS Congress 2022
Event Location:Oslo, Norwegen
Event Type:international Conference
Event Start Date:5 June 2022
Event End Date:9 June 2022
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 > Transport Aircraft
Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Institute for Aerodynamics and Flow Technology > CASE, BS
Deposited By: Wild, Dr.-Ing. Jochen
Deposited On:07 Dec 2022 11:04
Last Modified:24 Apr 2024 20:48

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