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Active Flow Separation Control on a High-Lift Wing-Body Configuration. Part 2: The Pulsed Blowing Application.

Ciobaca, vlad and Kühn, Timo and Rudnik, Ralf and Bauer, Matthias and Gölling, Burkhard (2011) Active Flow Separation Control on a High-Lift Wing-Body Configuration. Part 2: The Pulsed Blowing Application. 29th AIAA Applied Aerodynamics Conference, 27 - 30 June 2011,, Honolulu, Hawaii.

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Abstract

This contribution discusses the implementation of active flow separation control for a 3D high-lift wing-body configuration under atmospheric low-speed wind tunnel conditions. The slot-actuators are applied on the suction side of the trailing edge flap to prevent local flow separation. It is the consequent progression of the work presented in Part 1 of this paper. The active flow control (AFC) method of choice is now the pulsed blowing. The experimental results indicate that this AFC technique is feasible for such applications with a global performance enhancement. Here, the wind tunnel findings are briefly discussed while the emphasis is given on the numerical investigations. The verification of the URANS approach points out that the global enhancement through AFC may easily be overestimated by insufficient numerical convergence. Thus, high computational requirements are needed for a consistent numerical evaluation. The computational results highlight the ability of pulsed blowing at moderate blowing momentum coefficients to suppress the flow separation on the trailing edge flap and support the global aerodynamic enhancement. The numerical results show an acceptable agreement with the experimental results for this AFC application.

Item URL in elib:https://elib.dlr.de/72008/
Document Type:Conference or Workshop Item (Paper)
Title:Active Flow Separation Control on a High-Lift Wing-Body Configuration. Part 2: The Pulsed Blowing Application.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ciobaca, vladvlad.ciobaca (at) dlr.deUNSPECIFIED
Kühn, Timotimo.kuehn (at) dlr.deUNSPECIFIED
Rudnik, Ralfralf.rudnik (at) dlr.deUNSPECIFIED
Bauer, Matthiasmatthias.bauer (at) ilr.tu-berlin.deUNSPECIFIED
Gölling, BurkhardBurkhard.Goelling (at) airbus.comUNSPECIFIED
Date:June 2011
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:AFC, Active Flow Control, URANS, High-Lift
Event Title:29th AIAA Applied Aerodynamics Conference
Event Location:Honolulu, Hawaii
Event Type:international Conference
Event Dates:27 - 30 June 2011,
Organizer:AIAA
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Ciobaca, Vlad
Deposited On:29 Nov 2011 09:23
Last Modified:31 Jul 2019 19:33

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