Dynamics and control of fluid-structure-free surface interactions

无流固表面相互作用的动力学和控制

• 批准号: DP170100275
• 负责人: Prof Kerry Hourigan
• 金额: $ 30.29万
• 依托单位: Monash University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-06-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP170100275
• 关键词: Dynamics; control; fluid; structure; free

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.

本项目的目的是研究旋涡脱落和自由表面阻尼的明显对立效应，以及两种常见钝体：圆柱体和球体的振动控制或激励。钝体在水面以下或穿透水面时的流致振动可能会损坏漂浮的离岸海洋结构物和系泊物体。另一方面，从洋流中获取能量需要大量的水流引起的振动。预期的结果是身体振动的新模式、尾流转变和控制流体-结构相互作用的手段。这项研究将有益于近海海洋工程、潜体和混合船的许多过程，在这些过程中，了解和控制钝体的流体-结构相互作用可以减少代价高昂且危险的诱发振动。