Dynamics and control of fluid-structure-free surface interactions

该项目旨在研究涡脱落和自由表面阻尼的明显相反的效果，单独和联合，以及两个通用的海崖体：圆柱体和球体的振动的控制或激励。海崖体在水面下或穿透水面时的流致振动会损坏漂浮的海上海洋结构物和系留体。另一方面，从洋流中获取能量需要大的流致振动。预期的结果是新的模式的身体振动，尾流过渡和手段，以控制流体结构的相互作用。这项研究可以使近海海洋工程，潜艇和混合容器中的许多过程受益，其中理解和控制海崖体的流体-结构相互作用可以减轻昂贵和危险的诱导振动。

This project aims to research the apparently opposing effects of vortex shedding and free surface damping, individually and jointly, and the control or excitation of the vibrations for two generic bluff bodies: the cylinder and the sphere. Flow-induced vibrations of bluff bodies under or piercing water surfaces can damage floating off-shore marine structures and tethered bodies. On the other hand, harvesting energy from ocean currents needs large flow-induced vibrations. The intended outcomes are new modes of body vibration, wake transitions and means to control fluid-structure interactions. This research could benefit many processes in offshore marine engineering, submarine bodies and mixing vessels, where understanding and controlling fluid-structure interactions of bluff bodies can mitigate costly and dangerous induced vibrations.