狭い流路内の多重連結構造の空力弾性振動と励振流体力の測定

抄録

This paper presents experiments of the aerodynamic vibration of the multi-connected structures excited by air flow. In this study, the vibration characteristics and the unstable conditions of the self-excited vibration are examined through experiments. The motion of the multi-connected structures is investigated by measuring vibration displacement. In addition, the unsteady fluid force acting on the multi-connected structures (lateral surface) is investigated by measuring unsteady pressure. The local work done by the unsteady fluid force is also clarified. Lastly, the instability mechanism of the self-excited vibration is discussed based on experimental results.