学　术

　　本次航空航天学院特别邀请韩国釜山国立大学教授、韩国国家工程院Kyung Chun Kim院士，与我校师生分享研究心得。报告内容涉及4D流场数据的捕获、重构可视化和神经网络算法。具体安排如下，欢迎感兴趣的师生参加：

　　主　题：Flow Characteristics and Noise Performance on Side Mirror Models by 4D Lagrangian Particle Tracking Velocimetry

　　主讲人：Kyung Chun Kim教授，韩国釜山国立大学

　　主持人：严尧副教授，航空航天学院

　　时　间：2019年11月1日（周五）下午2:00

　　地　点：研究院大楼202会议室

　　内容简介：

　　A time-resolved three-dimensional Lagrangian Particle Tracking Velocimetry (4D PTV) has developed adopting the Shake-the-box algorithm with four high-speed cameras. Helium filled soap bubbles are used as tracers in the wind tunnel experiment to characterize flow structures around automobile side mirror models. Full volumetric velocity fields and evolution of vortex structures are obtained and analyzed. Instantaneous pressure fields are deduced by solving a Poisson equation based on the 4D PTV data. Direct measurement of pressure fluctuation agrees well with the estimated pressure by the 4D PTV. To increase spatial and temporal resolutions of velocity field up to Kolmogorov scale, artificial intelligence (AI)-based data assimilation method has applied. ANFIS (Adaptive Neural Fuzzy Inference System) based machine learning algorithm works well to find hidden 3D vortical structures and sound level spectra behind the automobile side mirror models.

　　主讲人简介：

　　Prof. KC Kim received his BA degree at Pusan National University, Korea in 1979. He received MS and Ph.D degree at KAIST, Korea in 1981 and 1987 respectively. Since 1983, he was hired as a faculty member in Pusan National University (PNU), Korea. He was invited as a visiting professor from Ottawa University in Canada for 1989-1990. He joined at the department of theoretical and applied mechanics in University of Illinois, Urbana-Champaign, USA as an invited professor for 1996-1997. He was invited as a special foreign professor from the University of Tokyo, Japan for 2009-2010. KC Kim was selected as a PNU Distinguished Professor in 2018. During 36 years at PNU, he has published about 605 refereed journal papers in Domestic and International Journals and supervised 203 MS and Ph.D students. On the basis of his research outcomes, he received the outstanding paper awards (1995, 2002) from KSME and KOSEF. In 2009 and 2016, he received the Academic award and the first Yeosong award from KSME. He received Nakayama award in 2012 and Asanuma award in 2014 based on contributions in world Visualization society. In 2019, he received Busan Science and Technology award. He is currently serving as an Editor in Chief for Journal of Visualization. In 2002, his laboratory has designated as a National Research laboratory from the Ministry of Science and Education of Korea. Prof. Kim established the MEMS/NANO Fabrication Center and served as the director from 2004-2009. In 2004, he was selected as a member of National Academy of Engineering of Korea. For 2008-2009, He was in charge of the president of Korean Society of Visualization. He was the Chairman of the 14th International Symposium on Flow Visualization which was held in Daegu, Korea, 2010. He was the Chairman of the 12th International Symposium on Particle Image Velocimetry which was held for June 18-22, 2017, Busan, Korea. His research interests include: Turbulence, Two-Phase Flows, Flow Visualization, PIV, LIF, PSP, TSP, CFD, Heat Transfer, Thermal System Simulation and Optimization, Next Generation Marine Engine, Organic Rankine Cycle Power System, Multi-scale Multi-physics Analysis and Measurement Techniques, Microfluidics, Bio-MEMS, Lattice Boltzmann Simulation, Solar Power, Cryogenics, Wind Turbine and Fuel Cell, and Wind Engineering.