NDLI: Investigation on Blade Flutter in Transonic Compressor With a Coupled Numerical Approach

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Zhang, Mingming Hou, Anping Zhou, Sheng Yang, Xiaodong
Copyright Year	2011
Abstract	A fluid-solid coupled approach for investigating blade flutter in a compressor under the parallel computation of aeroelasticity is presented. The unsteady flow field of rotor is studied by a CFD model of the entire compressor flowpath, coupled with a finite element model for the blades to identify modal shapes, natural frequencies, vibratory stress and the structural deformations. Interactions between fluid and structure are dealt with in a coupled manner, based on the interface exchange of information between the aerodynamic and structural model. The coupled computational results are presented and compared with experimental data. Blade variations and the way of these variations is related to vibratory stress amplitude are investigated. Transient responses of blade stress are provided to determine whether flutter occurs. This coupled method successfully predicts the flutter of a transonic rotor over range of operating conditions. The nonlinear behaviors of flow field, blade vibrations, and inter-blade phase angle are discussed.
Starting Page	863
Ending Page	869
Page Count	7
File Format	PDF
ISBN	9780791854945
DOI	10.1115/IMECE2011-63218
Volume Number	Volume 8: Mechanics of Solids, Structures and Fluids; Vibration, Acoustics and Wave Propagation
Conference Proceedings	ASME 2011 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2011-11-11
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Deformation Vibration Blades Computational fluid dynamics Rotors Compressors Unsteady flow Flow (dynamics) Stress Transients (dynamics) Fluids Finite element model Computation Flutter (aerodynamics) Shapes Aeroelasticity
Content Type	Text
Resource Type	Article

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