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Active flow separation control at the outer wing

Rosenblum, Jean-Pierre and Vrchota, Petr and Prachar, Ales and Peng, Shia-Hui and Wallin, Stefan and Eliasson, Peter and Iannelli, Pierluigi and Ciobaca, Vlad and Wild, Jochen and Hantrais-Gervois, Jean-Luc and Costes, Michel (2020) Active flow separation control at the outer wing. CEAS Aeronautical Journal, 11 (4), pp. 823-836. Springer. doi: 10.1007/s13272-019-00402-4. ISSN 1869-5582.

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Official URL: https://link.springer.com/article/10.1007/s13272-019-00402-4

Abstract

Within the European project AFLoNext, one of the technological streams is dedicated to the investigation of active flow control (AFC) to increase the robustness of the wing tip design at takeoff conditions, whilst allowing the optimization of aerodynamic efficiency in cruise. AFC is used to delay the wing tip stall, which is caused by vortex breakdown, thus improving the lift to drag ratio and allowing a steeper climb gradient during second segment climb when the landing gear is retracted. The numerical parametric studies of AFC aerodynamic sizing were shared between the involved partners on the basis of actuator location (in the leading edge region or on the upper surface) and actuator types (steady blowing, synthetic jets, pulsed jets). Most of the numerical results have been obtained for steady blowing through continuous or segmented slots. The specific effect of the unsteady means of actuation on the flow topology was also identified. The aim of this study was to take into account industrial requirements defined by Airbus and geometric constraints of AFC actuators arising from the project partners involved in the development of AFC hardware. Some comparisons between the partners’ results are presented, allowing preliminary conclusions to be drawn. The most effective and efficient device turned out to be pulsed blowing through segmented slots located at the leading edge separation line.

Item URL in elib:https://elib.dlr.de/137139/
Document Type:Article
Title:Active flow separation control at the outer wing
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rosenblum, Jean-PierreDassault Aviation S.A.UNSPECIFIEDUNSPECIFIED
Vrchota, PetrVZLUUNSPECIFIEDUNSPECIFIED
Prachar, AlesVZLUUNSPECIFIEDUNSPECIFIED
Peng, Shia-HuiTotalförsvarets forskningsinstitut - FOIUNSPECIFIEDUNSPECIFIED
Wallin, StefanKTHUNSPECIFIEDUNSPECIFIED
Eliasson, PeterFOI, Stockholm, SwedenUNSPECIFIEDUNSPECIFIED
Iannelli, PierluigiCIRA, Capua, ItalyUNSPECIFIEDUNSPECIFIED
Ciobaca, VladUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wild, JochenUNSPECIFIEDhttps://orcid.org/0000-0002-2303-3214UNSPECIFIED
Hantrais-Gervois, Jean-LucONERAUNSPECIFIEDUNSPECIFIED
Costes, MichelONERA - The French Aerospace Lab, F-92190, Meudon, FranceUNSPECIFIEDUNSPECIFIED
Date:2020
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:11
DOI:10.1007/s13272-019-00402-4
Page Range:pp. 823-836
Publisher:Springer
ISSN:1869-5582
Status:Published
Keywords:Aerodynamics, Flow Control, Separation Control, CFD
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 - Flight Physics (old)
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Wild, Dr.-Ing. Jochen
Deposited On:09 Nov 2020 12:42
Last Modified:01 Jan 2022 03:00

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