Efficient CSM/CFD method for aeroelasticity stability analys of turbomachne blades

Temis, Yuri; Salles, Loïc

Paper published in a book (Scientific congresses and symposiums)

Temis, Yuri; Salles, Loïc

2012 • In Conférence ISROMAC 2012-14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery

Peer reviewed

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Keywords :

Blade Vibration; Flutter; finite element method; CFD; Turbomachinery

Abstract :

[en] The problem of blade flutter prediction is relevant on the engine design stage. Modern technology of multidisciplinary simulation that combines the vibrating blade model and the response model of gas flow in gas dynamic tract is used in present paper to determine the influence of flow parameters on natural modes and frequencies. Geometrically nonlinear aeroelastic blade models (pre-twisted beam, shell and 3D solid body) that consider aerodynamic stiffness in the blade assembly are implemented. Aerodynamic stiffness coefficients are calculated on the base of CFD simulation results. Stability analysis for typical compressor and turbine blades is carried out. It is demonstrated, that centrifugal loads and flow speed change blade natural frequencies and modes, what has an influence on blade sensitivity to flutter. It is shown that connection between blade second bending and first torsion natural modes defines the condition of blade bending-torsion flutter initiation

Disciplines :

Aerospace & aeronautics engineering

Author, co-author :

Temis, Yuri

Salles, Loïc ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Vibration of Turbomachines

Language :

English

Title :

Efficient CSM/CFD method for aeroelasticity stability analys of turbomachne blades

Publication date :

2012

Event name :

ISROMAC

Event place :

Honolulu, United States - Hawaii

Event date :

2012

Audience :

International

Main work title :

Conférence ISROMAC 2012-14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery

Publisher :

ISROMAC

Peer review/Selection committee :

Peer reviewed

Available on ORBi :

since 04 July 2025

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Bibliography

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