报告主题：Experiments of dynamics of small heavy Particles in turbulent flows (湍流中重颗粒动力学行为的实验研究)
报 告 人：Dr. Ewe-Wei Saw（法国核能研究中心)
时 间：2015年9月24日（周四)13:30
地 点：延长校区应用数学和力学研究所会议室
主办部门：理学院力学所
Abstract: I will describe some research mostly in the field of dynamics and interaction of small heavy particles with turbulent flows. Turbulence is often said to be the most important unsolved problem in classical physics (due to physicist Richard Feynman). In a more practical sense, turbulence plays important role in many natural process such as in engines, aircraft flights, cloud-climate dynamics and formation of planets. Many of these processes involve non-trivial interaction between turbulent flow and embedded particles. I will highlight my past works in this field. Specifically, we will see how turbulence causes particles to cluster, enhances their colliding velocities and frequency. These phenomena have strong implication on evolution of heavy particles such as in combustion engine, cloud dynamics, planetology.