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8月4日 Flow-induced vibration of rotating bluff bodies

发布时间:2017-7-29 11:46:34  点击次数:227

 

主  办:力学与工程科学系、湍流与复杂系统国家重点实验室
报告人:Dr.Jisheng Zhao
时  间:8月4日 周五 14:00-15:00
地  点:工学院1号楼212会议室
主持人:杨越 特聘研究员


报告内容摘要:


Flow-induced vibration (FIV) is a critical problem in many fields of engineering. This is particularly so for offshore structures, high-rise buildings, cooling arrays in nuclear power generators, and turbomachinery blades. This has motivated numerous investigations that aim to characterise the fluid-structure system and provide a good understanding of the mechanisms. The present studies experimentally investigate the FIVs of rotating 2D and 3D bluff bodies over a moderate Reynolds number range. The results of a rotating cylinder showed that at the rotation rate α = 2:0 there was approximately an 80% increase in the peak vibration amplitude response compared to that of a non-rotating cylinder. The results of a rotating sphere showed that the vibration amplitude response decreased gradually as the rotation rate was increased up to α = 6:0, beyond which the body vibration is significantly reduced.
 
 
报告人简介:


Dr Zhao's research interests include flow-induced vibration of bluff bodies, control of flow-induced vibration (passive and active), flow instabilities, energy harvesting, aerodynamics of flying insects, aerodynamics of wind turbines, aerodynamics of vehicles. He obtained his Bachelor's degree in the School of Energy and Power Engineering, BUAA, in 2004, and received his PhD degree in the Department of Mechanical and Aerospace Engineering, Monash University, in 2012. Since 2015, he works as a research fellow and also the Manager of the FLAIR Water Channel Laboratory at Monash University.
 
 
 
 
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