报告人：周同明 教授 西澳大学

时间：2024年6月17日上午9：00-12：00

地点：轮机楼317

报告题目：Wake structures of a circular cylinder covered by different roughness

专家简介：

Professor Tongming Zhou has been in the area of fluid dynamics for more than 20 years. He obtained his PhD in 1999 in the area of Fluid Mechanics from The University of Newcastle (Australia). After completing his PhD, he worked as a post-doctoral fellow for about 2 years and then joined Nanyang Technological University, Singapore, as an assistant/associate professor. Since July 2007, he has been working in Department of Civil, Environmental and Mining Engineering, The University of Western Australia. His main research interests include (1) suppression of vortex shedding and VIV using various passive methods to reduce hazards; (2) enhancement of vortex-induced vibrations (VIV) and galloping of bluff structures to increase fluid energy harnessing efficiency; (3) resonance of waves in the gap between a floating LNG facility and a LNG carrier; (4) liquid sloshing in a partially-filled tank by conducting experiments on the hexapod.

报告摘要：

Marine growth (MG) forms due to the accumulation of micro-organisms, plants, algae, or animals on wetted surfaces and occurs almost everywhere in the ocean. It affects the functionality and the integrity of marine structures by increasing the diameters and self-weights, changing the surface conditions and influencing the hydrodynamic characteristics. Due to the change of surface conditions, the wake characteristics will also be changed. In the present study, 3D printed semi-spheres of various heights are used to simulate the MG. Their effects on hydrodynamic forces and wake vortex structures are investigated both in the near and intermediate wake regions.