Kaufmann, Kurt and Gardner, Anthony Donald and Costes, Michel (2016) Comparison between two-dimensional and three-dimensional dynamic stall. In: New Results in Numerical and Experimental Fluid Mechanics X Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 132. Springer International Publishing Switzerland 2016. pp. 315-325. doi: 10.1007/978-3-319-27279-5_28. ISBN 978-319-27278-8. ISSN 1612-2909.
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Official URL: http://link.springer.com
Abstract
Numerical computations using the DLR-TAU code investigate the differences and similarities between dynamic stall on the two-dimensional OA209 airfoil and the three-dimensional OA209 finite wing. The mean angle of attack in the two-dimensional computations is reduced to match the effective angle of attack at the spanwise position where in the finite wing computations the dynamic stall vortex starts to evolve. Small variations of the mean angle of attack in the two-dimensional numerical simulations show a change from trailing edge separation only to deep dynamic stall. The analysis of the three-dimensional flow field reveals that after the evolution of the dynamic stall vortex the flow field is split into two parts: 1. High spanwise velocity towards the wing’s root in the region between the plane of the first occurrence of stall and the wing’s root. 2. High spanwise velocities towards the wing’s tip in the region between the plane of the first occurrence of stall and wing tip.
Item URL in elib: | https://elib.dlr.de/91238/ | ||||||||||||||||||
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Document Type: | Contribution to a Collection | ||||||||||||||||||
Additional Information: | Online ISBN: 978-3-319-27279-5 ISSN: 1860-0824 (electronic) | ||||||||||||||||||
Title: | Comparison between two-dimensional and three-dimensional dynamic stall | ||||||||||||||||||
Authors: |
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Date: | January 2016 | ||||||||||||||||||
Journal or Publication Title: | New Results in Numerical and Experimental Fluid Mechanics X | ||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||
Open Access: | No | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||
Volume: | 132 | ||||||||||||||||||
DOI : | 10.1007/978-3-319-27279-5_28 | ||||||||||||||||||
Page Range: | pp. 315-325 | ||||||||||||||||||
Editors: |
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Publisher: | Springer International Publishing Switzerland 2016 | ||||||||||||||||||
Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||
ISSN: | 1612-2909 | ||||||||||||||||||
ISBN: | 978-319-27278-8 | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | helicopter aerodynamics, dynamic stall, numerical computations | ||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||
HGF - Program Themes: | rotorcraft | ||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||
DLR - Program: | L RR - Rotorcraft Research | ||||||||||||||||||
DLR - Research theme (Project): | L - The Virtual Aerodynamic Rotorcraft (old) | ||||||||||||||||||
Location: | Göttingen | ||||||||||||||||||
Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Helicopters | ||||||||||||||||||
Deposited By: | Bachmann, Barbara | ||||||||||||||||||
Deposited On: | 10 Jan 2017 15:57 | ||||||||||||||||||
Last Modified: | 27 Jan 2021 11:48 |
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