题 目：Three-dimensional flow structures in the wake of a circular cylinder
主讲人：西澳大学蒋弘毅博士
时 间：9月21日（周四）15：00-17:00
主要内容：
Steady incoming flow past a long circular cylinder is one of the most classical fluid mechanics problems. Beyond a Reynolds number of 190, beautiful three-dimensional flow patterns are naturally formed in the wake of a nominally two-dimensional cylinder. This will also affect the hydrodynamic forces on the cylinder and the dynamic response of the cylinder such as vortex-induced vibration. The presentation unveils the beautiful three-dimensional flow structures which are often masked by the transparency of air and water. On top of that, physical mechanisms for several flow phenomena, such as the wake transition process and the variation of vortex shedding frequency, are revealed.
主讲人简介：
Dr. Hongyi Jiang is a Research Associate at The University of Western Australia. He received a Bachelor’s degree in civil engineering (2010) and a Master’s degree in geotechnical engineering (2013) at Zhejiang University, and recently a PhD at The University of Western Australia majoring in hydraulics (2017). His current research expertise includes the flow around bluff bodies and the local scour below offshore pipelines. As the leading author he has published 11 papers, including 4 in the prestigiousJournal of Fluid Mechanics. He is also a reviewer for Journal of Fluid Mechanics and Physics of Fluids. He is currently working on the Australian Research Council project “hydrodynamic forces on small diameter pipelines laid on natural seabed”.