Flow-Induced Vibrations of Spheres
讲座名称：
Flow-Induced Vibrations of Spheres
讲座时间：
2019-04-15
讲座人：
Kerry Hourigan
形式：
校区：
兴庆校区
实践学分：
讲座内容：
讲座题目：Flow-Induced Vibrations of Spheres
讲座时间：2019年4月15日上午10:00
讲座地点：航天航空学院教一楼四楼工会之家
讲座人：Prof.Kerry Hourigan
讲座内容：
The sphere is the important generic three-dimensional bluff body geometry widely used in aero- and hydrodynamics, and was employed by Galileo to demonstrate that acceleration due to gravity was independent of mass. However, little was known of the flow-induced vibrations of spheres in motion relative to fluid flows until the pioneering study by Govardhan & Williamson in 1997. In this presentation, the rich array of flow-induced vibrations that arise for spheres that have been uncovered in recent times at the FLAIR lab will be discussed. These include the effects of uniform rotation and rotary oscillations, free surfaces, rolling on solid surfaces, and trip rings. Some variations lead to vibration suppression, some to vibration enhancement, and others to a mixture of outcomes for different vibration modes. Both experimental and computational investigations will be reported.
相关视频