- 奇米第四色在线影院题目：Snow-powered Field Research for Wind Energy, Atmospheric Boundary Layer and Particle Setting Dynamics
- 报 告 人：洪家荣 副教授
- 主 持 人：王国华 副教授
Jiarong Hong is a tenured associate professor in Mechanical Engineering Department and Saint Anthony Falls Laboratory at University of Minnesota. He received his bachelor degree from University of Science and Technology of China in 2005, M.S. and Ph.D. from Johns Hopkins University in 2008 and 2011, and started his career in University of Minnesota in 2012. His research is focused on understanding the dynamic processes involved in the interaction between flow and environment, with innovative approach and instrumentation to tackle the challenges in the measurements of complex flow fields, for a wide range of applications. Hong is a recipient of National Science Foundation CAREER award, Office of Naval Research Young Investigator award and McKnight Land-grant Professorship from University of Minnesota.
In this talk, we will provide a summary of our field research on wind turbine wake flows, atmospheric boundary layer and particle settling dynamics based on snow-powered flow visualization and super-large-scale particle imaging velocimetry (SLPIV) at the Eolos field station, Rosemount, MN, USA. Specifically, we will describe several interesting behaviors of near-wake flows (e.g., wake contraction, dynamic wake modulation, and meandering and deflection of nacelle wake, etc.) revealed by our snow-powered imaging techniques, and their connections with constantly-changing inflows and turbine operation, which are uniquely associated with utility-scale turbines. Additionally, we will talk about how such techniques has been used to probe into the flow structures and their organization in the atmospheric boundary layer as well as the variation of snow settling dynamics upon the changing turbulence and snow conditions in the field.