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Numerical flutter analysis of turbomachinery bladings based on time-linearized, time-spectral and time-accurate simulations

May, Markus and Mauffrey, Yann and Sicot, Frédéric (2011) Numerical flutter analysis of turbomachinery bladings based on time-linearized, time-spectral and time-accurate simulations. In: Proceedings "IFASD 2011". IFASD 2011 - 15th International Forum on Aeroelasticity and Structural Dynamics, 27 - 30 June 2011, Paris, Frankreich.

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Abstract

Within the European research project FUTURE a transonic compressor rotor has been evaluated with respect to its aeroelastic stability. Based on the identical computational mesh different numerical approaches of the DLR flow solver TRACE and the ONERA code elsA are compared in this paper: whereas a time-linearized method based on small time-harmonic perturbations of the steady flow field is chosen in TRACE, elsA uses a non-linear time-domain harmonic balance method in order to determine local aerodynamic work entries and the corresponding global damping values for all inter-blade phase angles (IBPA). Furthermore, nonlinear reference solutions for the critical IBPA range will be provided by both codes using their classical time-marching schemes. In this context the difference in terms of computational effort between the fast linearized or harmonic balance methods and the classical nonlinear techniques shall be highlighted as well.

Item URL in elib:https://elib.dlr.de/70265/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Numerical flutter analysis of turbomachinery bladings based on time-linearized, time-spectral and time-accurate simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
May, Markusmarkus.may (at) dlr.deUNSPECIFIED
Mauffrey, YannONERAUNSPECIFIED
Sicot, FrédéricONERAUNSPECIFIED
Date:2011
Journal or Publication Title:Proceedings "IFASD 2011"
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:turbomachinery aeroelasticity, flutter analysis, CFD, time-linearization, harmonic balance
Event Title:IFASD 2011 - 15th International Forum on Aeroelasticity and Structural Dynamics
Event Location:Paris, Frankreich
Event Type:international Conference
Event Dates:27 - 30 June 2011
Organizer:3AF
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:08 Nov 2011 11:03
Last Modified:31 Jul 2019 19:32

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