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A Study on Fluid Self-Excited Flutter and Forced Response of Turbomachinery Rotor Blade

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  • Chih-Neng Hsu

Abstract

Complex mode and single mode approach analyses are individually developed to predict blade flutter and forced response. These analyses provide a system approach for predicting potential aeroelastic problems of blades. The flow field properties of a blade are analyzed as aero input and combined with a finite element model to calculate the unsteady aero damping of the blade surface. Forcing function generators, including inlet and distortions, are provided to calculate the forced response of turbomachinery blading. The structural dynamic characteristics are obtained based on the blade mode shape obtained by using the finite element model. These approaches can provide turbine engine manufacturers, cogenerators, gas turbine generators, microturbine generators, and engine manufacturers with an analysis system to remedy existing flutter and forced response methods. The findings of this study can be widely applied to fans, compressors, energy turbine power plants, electricity, and cost saving analyses.

Suggested Citation

  • Chih-Neng Hsu, 2014. "A Study on Fluid Self-Excited Flutter and Forced Response of Turbomachinery Rotor Blade," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-20, May.
    • Handle: RePEc:hin:jnlmpe:437158
    DOI: 10.1155/2014/437158
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