Stumpf, E. (2000) Effect of flap strakes with regard to vortex wake alleviation. In: ECCOMAS 2000 - Book of Abstracts. Artes Gráficas Torres S.A., Morales 17, E-08029 Barcelona. ECCOMAS 2000, Barcelona (e), 11.-14.09.2000. ISBN 84-89925-69-0.
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Abstract
Numerical simulations based on the three-dimensional Euler equations are used to investigate the nearfield bursting of the flap tip vortex of a narrow body airliner regarding vortex wake alleviation. Strake-like flap tip modifications with 80° and 70° backswept outer side-edge of the outboard flap are tested. The simulation quality of the vortex formation and spatial development is analysed by comparison to wind tunnel measurements of the spanwise lift distribution and to experimental five-hole-probe data. Very good agreement between measurement and computational results is achieved. Flap strakes are shown to be capable to trigger both bubble type vortex bursting and bursting above the suction side of the flap, leading to a wake-like flow structure. However, the flap vortex structure recovers shortly downstream of the bursting location. For the investigated high lift configuration the performed Euler computations do not give an indication that nearfield vortex bursting could lead to a reduction of circulation.
Item URL in elib: | https://elib.dlr.de/13339/ | ||||||
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Document Type: | Conference or Workshop Item (Paper) | ||||||
Additional Information: | LIDO-Berichtsjahr=2001, | ||||||
Title: | Effect of flap strakes with regard to vortex wake alleviation | ||||||
Authors: |
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Date: | 2000 | ||||||
Journal or Publication Title: | ECCOMAS 2000 - Book of Abstracts | ||||||
Open Access: | No | ||||||
Gold Open Access: | No | ||||||
In SCOPUS: | No | ||||||
In ISI Web of Science: | No | ||||||
Editors: |
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Publisher: | Artes Gráficas Torres S.A., Morales 17, E-08029 Barcelona | ||||||
ISBN: | 84-89925-69-0 | ||||||
Status: | Published | ||||||
Keywords: | Vortex Wake, Vortex Breakdown, Vorticity, Euler Calculation, Unstructured Grid, DLR | ||||||
Event Title: | ECCOMAS 2000, Barcelona (e), 11.-14.09.2000 | ||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||
HGF - Program: | Aeronautics | ||||||
HGF - Program Themes: | other | ||||||
DLR - Research area: | Aeronautics | ||||||
DLR - Program: | L ST - Starrflüglertechnologien | ||||||
DLR - Research theme (Project): | L - Low-Emission Air Traffic (old) | ||||||
Location: | Köln-Porz , Braunschweig , Göttingen | ||||||
Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik | ||||||
Deposited By: | Grant, Claudia | ||||||
Deposited On: | 16 Sep 2005 | ||||||
Last Modified: | 14 Jan 2010 20:18 |
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