主讲人：Hui Hu（美国爱荷华州立大学航空系）

题 目：《Development of Advance Flow Diagnostic Techniques to Study Complex Thermal Fluids Phenomena》

时 间：2014-12-12（星期五） 10：00~11：30

地 点：皇冠新体育app学术报告厅（新9教三楼）

举办单位：皇冠新体育app

欢迎广大师生参加！

摘要:The talk will start with the description of the recent progress made by the speaker in developing a novel molecule-based flow diagnostic technique, named as Molecular Tagging Velocimetry and Thermometry (MTV&T), for simultaneous measurements of flow velocity and temperature distributions in fluid flows. Unlike most commonly-used particle-based flow diagnostic techniques such as Particle Image Velocimetry (PIV), MTV&T utilizes specially-designed phosphorescent molecules, which can be turned into long-lasting glowing marks upon excitation by photons of appropriate wavelength, as the tracers for both flow velocity and temperature measurements.The unique glamour of the MTV&T technique will be demonstrated from the application examples to study the thermal effects on the wake instabilities behind a heated cylinder, visualization of the unsteady heat transfer and phase changing process within micro-sized icing water droplets, and transient surface water transport processes pertinent to aircraft icing and de-/anti- icing applications.

The second part of the talk will introduce the speaker’s recent research on wind turbine aeromechanicsand wake interferences among multiple wind turbines sited in onshore and offshore wind farms.The experimental studies are conducted in a large-scale Aerodynamic/Atmospheric Boundary Layer (AABL) Wind available at Iowa State University. In addition to measuring dynamic wind loads (both forces and moments) and the power outputs of the model turbines, a high-resolution Particle Image Velocity (PIV) system is used to conduct detailed flow field measurements to quantify the characteristics of the turbulent wake vortex flows and the wake interferences among the wind turbines sited over a flat (baseline case) and hilly terrains with non-homogenous surface winds. The detailed flow field measurements are correlated with the dynamic wind loads and power output measurements to elucidate underlying physics for higher total power yield and better durability of the wind turbines in atmospheric boundary layer (ABL) winds.

个人简历：Hui Hu教授本、硕、博先后毕业于北京航空航天大学，后于2001年在日本东京大学再次获得博士学位。2001年-2004年在密西根州立大学机械工程系任Research Associate，于2004年加入爱荷华州立大学航空航天系任助理教授，并于2013年提前两年获评教授。Hui Hu教授是美国航空航天学会（AIAA）通讯会士（Associate Fellow），美国机械工程师学会-流体测量和仪器专业委员会主席，曾获美国自然科学基金CAREER奖，航空航天学会多个会议的最佳论文奖。现担任中国科学（航空航天领域）杂志副主编。