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Numerical Studies of Active Flow Control applied at the Engine-Wing Junction

Fricke, Sebastian and Ciobaca, Vlad and Wild, Jochen and Normab, David (2015) Numerical Studies of Active Flow Control applied at the Engine-Wing Junction. In: Advances in Simulation of Wing and Nacelle Stall Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 131. Springer Verlag. pp. 397-411. ISBN ISBN: 978-3-319-21126-8 (Print) 978-3-319-21127-5 (Online). ISSN 1612-2909

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Official URL: http://link.springer.com/book/10.1007/978-3-319-21127-5


This paper presents a numerical study of active flow control applied at the engine-wing junction to increase the high-lift performance of a generic full scale wind tunnel model representing a landing configuration of conventional airliners with engines mounted under backward swept wings. The use of UHBR (Ultra High Bypass Ratio) engines is currently one of the most promising approaches to further increase the efficiency of transport aircraft. However their large engine diameter prevents the mounting of leading edge devices at the engine-wing junction. This leads to a local flow separation on the wing suction side in the wake of the nacelle which may trigger the total wing stall and hence compromises the high-lift performance and therefore the total aircraft efficiency. At DLR (German Aerospace Center) numerical simulations of AFC (active flow control) at the engine-wing junction were conducted to study the capability of suppressing this local flow separation. The effects of steady and pulsed jet blowing with the same actuator geometry are compared. The results show that the steady blowing reduces the size of the nacelle-wake separation. However the pulsed blowing of the analyzed setup shows a low effect on the size of the nacelle-wake separation.

Item URL in elib:https://elib.dlr.de/100047/
Document Type:Book Section
Title:Numerical Studies of Active Flow Control applied at the Engine-Wing Junction
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Fricke, Sebastiansebastian.fricke (at) dlr.deUNSPECIFIED
Ciobaca, Vladvlad.ciobaca (at) dlr.deUNSPECIFIED
Wild, Jochenjochen.wild (at) dlr.deUNSPECIFIED
Date:10 July 2015
Journal or Publication Title:Advances in Simulation of Wing and Nacelle Stall
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/978-3-319-21127-5
Page Range:pp. 397-411
Radespiel, RolfTU Braunschweig
Niehuis, ReinhardUniverstität der Bundeswehr München
Kroll, NorbertDLR Braunschweig
Behrends, KathrinTU Braunschweig
Publisher:Springer Verlag
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISBN:ISBN: 978-3-319-21126-8 (Print) 978-3-319-21127-5 (Online)
Keywords:Active Flow Control, Transport Aircraft, Engine-Wing Junction, uRANS
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: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Ciobaca, Vlad
Deposited On:07 Dec 2015 15:21
Last Modified:07 Dec 2015 15:21

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