スマート構造を用いた翼列フラッターの能動制御 : 第二報ピエゾ素子を用いた制御法の検討

概要

論文の詳細を見る
Possibility of active suppression of cascade flutter was studied by a developed numerical method in which flow-structure coupling was incorporated. An effective suppression was found for transonic flutter case by a technique where the trailing edge of a blade was actively oscillated. The active oscillation was realized with a piezo-electric device glued on the blade surfaces. The trailing edge oscillation could control the oscillatory movement of a passage shock wave in a cascade flow channel, which movement dominated the flutter instability. An important factor for effective suppression was found to be the phase difference between blade vibration and active trailing edge oscillation. The control method was experimentally tested in a linear cascade tunnel under a subsonic flow condition, and its feasibility was clearly shown.
社団法人日本ガスタービン学会の論文
2005-07-20