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Flutter Stability of a Transonic Compressor Rotor - Application and Comparison of Different Numerical Methods

Kemme, R. and Kahl, G. and Schmitt, S. (2002) Flutter Stability of a Transonic Compressor Rotor - Application and Comparison of Different Numerical Methods. 13. DGLR-Fach-Symposium der STAB, München, 12.-14. November 2002.

Full text not available from this repository.

Abstract

This paper investigates the flutter mechanism of a high loaded transonic compressor rotor by applying different numerical methods. For predictions of the stability in the frequency domain, harmonic fluid forces are calculated with a linearized Euler method and with a nonlinear time domain Navier-Stokes solver for forced motion. To include nonlinear effects in the stability prediction, the time domain method is applied in a fluid-structure coupled mode of operation. The results of this 3D viscous aeroelastic computations in the time domain for the whole annulus of the rotor are compared to the frequency domain solutions. The comparative study shows that shock-boundary layer interactions significantly influence the stability of the compressor rotor. While for higher reduced frequencies the rotor still behaves linearly, for lower reduced frequencies limit cycle oscillations (LCO) due to shock-boundary layer and shock-shock interaction occur.

Item URL in elib:https://elib.dlr.de/14345/
Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2002,
Title:Flutter Stability of a Transonic Compressor Rotor - Application and Comparison of Different Numerical Methods
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kemme, R.UNSPECIFIEDUNSPECIFIED
Kahl, G.UNSPECIFIEDUNSPECIFIED
Schmitt, S.UNSPECIFIEDUNSPECIFIED
Date:2002
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:aeroelastic stability, fluid structure interaction, time domain method, frequency domain method, transonic compressor, limit cycle oscillations, shock-bounding layer interaction
Event Title:13. DGLR-Fach-Symposium der STAB, München, 12.-14. November 2002
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:no assignment
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 21:44

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