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Airfoil Optimization Based on an Evolution Strategy with Respect to Aeroelasticity

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/
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:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dietz, G.UNSPECIFIEDUNSPECIFIED
Voß, R.UNSPECIFIEDUNSPECIFIED
De Breuker, R.UNSPECIFIEDUNSPECIFIED
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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