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

Separation Control on a High-Lift Airfoil using Vortex Generator Jets at High Reynolds numbers

Casper, Marcus and Scholz, Peter and Radespiel, Rolf and Wild, Jochen and Ciobaca, Vlad (2011) Separation Control on a High-Lift Airfoil using Vortex Generator Jets at High Reynolds numbers. 41st AIAA Fluid Dynamics Conference, 27.-30. Juni 2011, Honolulu, USA.

Full text not available from this repository.

Official URL: http://arc.aiaa.org

Abstract

This work focuses on an active flow control system for a 2D two element high-lift airfoil at high Reynolds numbers up to Re= 9.2 · 106 and a Mach number of Ma= 0.15. Additional test cases at different Reynolds-and Mach numbers up to Re=12.21 · 106 at Ma=0.2 complete these measurements. The experiments were done in the cryogenic test facility DNW-KKK. The model is equipped with vortex generator jets close to the leading edge on the pressure side to suppress a turbulent leading edge stall. The experiments clearly show that the system can prevent stall but the gain of lift is reduced at high Reynolds numbers. The additional lift primarily depends on the flow rate. The influence of the actuation frequency is not clear but higher frequencies seem to be more efficient. In most cases dynamic blowing exceeds static blowing. A variation of the Mach number with constant Reynolds number and AFC parameters results in a constant increase of lift whereas the additional angle of attack becomes higher.

Item URL in elib:https://elib.dlr.de/80235/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Separation Control on a High-Lift Airfoil using Vortex Generator Jets at High Reynolds numbers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Casper, MarcusTU-BS, ISMUNSPECIFIED
Scholz, PeterTU-BS, ISMUNSPECIFIED
Radespiel, RolfTU-BS, ISMUNSPECIFIED
Wild, JochenDLR AS-TFUNSPECIFIED
Ciobaca, VladDLR AS-TFUNSPECIFIED
Date:June 2011
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, High-Lift, Seperation Control, Fluidic Vortex Generator Jets
Event Title:41st AIAA Fluid Dynamics Conference
Event Location:Honolulu, USA
Event Type:international Conference
Event Dates:27.-30. Juni 2011
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Wild, Dr.-Ing. Jochen
Deposited On:08 Jan 2013 09:08
Last Modified:08 Jan 2013 09:08

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.