J052032 直交流による円柱群の流れ方向流力弾性振動とその応用に関する研究(〔J052-03〕流体関連の騒音と振動(3))

Abstract

In power generation plants, there are many problems by which vibration is made a cause, and fluidelastic vibration is a phenomenon which it must take care. There are many U-bent tubes in steam generators, and fluidelastic vibration may occur. Originally, fluidelastic vibration is considered a problem which vibrates in cross-flow. Then it had been taken measures not to vibrate in the steam generator of power generation plants. However, fluidelastic vibration in the in-flow direction has recently been observed on U-bent tubes. Since there is still little data of in-flow, we measured the in-flow instability for a future design guideline.