Dietz, G. and Voß, R. and De Breuker, R. (2004) Airfoil Optimization Based on an Evolution Strategy with Respect to Aeroelasticity. ECCOMAS 2004, Jyväskylä, Finland, 24-28 July 2004.
Full text not available from this repository.
Abstract
Numerical simulations are presented in order to test airfoil optimization criteria from the aeroelastic point of view. Based on an Evolution Strategy, airfoil-shape point optimization has been performed as a lift constrained drag minimization at a given Mach/Reynolds number combination for transonic flow. Additional to the drag minimization, the propagation time of pressure disturbances from the trailing edge to the leading edge above the suction side of the airfoil has been minimized. It could be shown that this minimization influences the unsteady flow field around the airfoil positively. In particular, the phase lag of the lift response to a harmonic pitch motion of the optimized airfoil is reduced compared with the value observed at the initial airfoil. Flutter calculations indicate that this change in the unsteady airloads reduces the collapse of the flutter boundary at transonic flow conditions well known as transonic dip.
Item URL in elib: | https://elib.dlr.de/14480/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Paper) | ||||||||||||
Additional Information: | LIDO-Berichtsjahr=2005, | ||||||||||||
Title: | Airfoil Optimization Based on an Evolution Strategy with Respect to Aeroelasticity | ||||||||||||
Authors: |
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Date: | 2004 | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | airfoil design, aeorelasticity, transonic flow, optimization, evolution strategy | ||||||||||||
Event Title: | ECCOMAS 2004, Jyväskylä, Finland, 24-28 July 2004 | ||||||||||||
Organizer: | University of Jyväskylä | ||||||||||||
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): | UNSPECIFIED | ||||||||||||
Location: | Göttingen | ||||||||||||
Institutes and Institutions: | Institute of Aeroelasticity | ||||||||||||
Deposited By: | Erdmann, Daniela | ||||||||||||
Deposited On: | 16 Sep 2005 | ||||||||||||
Last Modified: | 14 Jan 2010 21:54 |
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