elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

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

Fricke, Sebastian and Ciobaca, Vlad and Wild, Jochen and Norman, David (2014) Numerical Studies of Active Flow Control applied at the Engine-Wing Junction. Joint Symposium of DFG FOR 1066 and DLR C²A²S²E: "Simulation of Wing and Nacelle Stall", 01.-02. Dez. 2014, Braunschweig, Deutschland.

This is the latest version of this item.

Full text not available from this repository.

Abstract

This paper presents a numerical study of active flow control applied at the engine-wing junction of a generic full scale wind tunnel model representing a landing configuration to increase the high-lift performance. 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 also compromises the aerodynamic efficiency of airliners with engines mounted under backward swept wings. In order to keep a low ground clearance to avoid a heavy landing gear extension the large UHBR engine nacelles have to be closer coupled to the wing. This prevents the mounting of leading edge high-lift devices at the nacelle-wing junction such as slats, Krueger flaps or droop noses at the junction and leads to a local flow separation on the wing suction side in the wake of the nacelle which may trigger the total wing stall. This reduces the maximum lift coefficient which is a sizing parameter of the high-lift system. In order to reduce the size of the high-lift system and hence increase the overall aircraft efficiency this local flow separation has to be suppressed. Within the European project AfloNext (Active Flow - Loads and Noise control) the use of AFC (Active Flow Control) for the suppression of this flow separation is studied with high-fidelity numerical simulations and experimental studies with a full scale wind tunnel model. At the German Aerospace Center (DLR) numerical studies with steady and pulsed jet blowing are performed to determine working operation parameters of the actuators. In this contribution the first results of this study are presented.

Item URL in elib:https://elib.dlr.de/93428/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical Studies of Active Flow Control applied at the Engine-Wing Junction
Authors:
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
Norman, Daviddnorman (at) ara.co.ukUNSPECIFIED
Date:2 December 2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:active flow control, engine-wing junction
Event Title:Joint Symposium of DFG FOR 1066 and DLR C²A²S²E: "Simulation of Wing and Nacelle Stall"
Event Location:Braunschweig, Deutschland
Event Type:international Conference
Event Dates:01.-02. Dez. 2014
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
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Fricke, Sebastian
Deposited On:22 Jan 2015 14:51
Last Modified:22 Jan 2015 14:51

Available Versions of this Item

  • Numerical Studies of Active Flow Control applied at the Engine-Wing Junction. (deposited 22 Jan 2015 14:51) [Currently Displayed]

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.