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Local Power Exchange between a Pitching and Plunging Airfoil and the Transonic Flow

Bakker, Rina (2004) Local Power Exchange between a Pitching and Plunging Airfoil and the Transonic Flow. DLR-Interner Bericht. DLR IB 232-2004 J 05, 28 S.

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Abstract

The objective of this report is to gain a better understanding of the impact of the local aerodynamics about an airfoil on limit-cycle oscillations. Here the local power exchange is evaluated on the basis of measured static pressure distributions simultaneously obtained with motion data of the moving airfoil. The evaluation of the local power exchange is checked by comparison with the global power exchange obtained from th aerodynamic load coefficients. From the local power exchange over the airfoil can be concluded that the shock-wave dynamics mostly influences the amplification and the amplitude limitation of LCOs. Furthermore, possibly boundary-layer separation close to the trailing edge influences the behaviour of the aeroelastic system.

Item URL in elib:https://elib.dlr.de/50664/
Document Type:Monograph (DLR-Interner Bericht)
Title:Local Power Exchange between a Pitching and Plunging Airfoil and the Transonic Flow
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bakker, RinaUNSPECIFIEDUNSPECIFIED
Date:17 November 2004
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:28
Status:Published
Keywords:aeroelasticity, airfoil, limit-cycle oscillation, LCO
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:08 Aug 2007
Last Modified:27 Apr 2009 14:12

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