Applications of Fluid MechanicsNo Access

A TIME-DOMAIN METHOD FOR TRANSONIC FLUTTER ANALYSIS WITH MULTIDIRECTIONAL COUPLED VIBRATIONS

TONGQING GUO

Department of Aerodynamics, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China

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ZHILIANG LU

Department of Aerodynamics, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China

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YONGJIAN WU

Department of Aerodynamics, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China

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https://doi.org/10.1142/S0217984909018631Cited by:3 (Source: Crossref)

Abstract

Gridgen is employed for static multi-block grid generation. A rapid deforming technique is employed for dynamic grids. Flutters are numerically analyzed in the time domain with a coupled solution of unsteady Euler equations and structural equations of motion. Based on variable stiffness method of transonic flutter analysis, a time-domain method of transonic flutter analysis with multi-directional coupled vibrations is develpoed. For completeness, flutter characteristics of a wing model with winglets and an aircraft model with external stores are numerically analyzed.

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