报告人：Dr. Hui Hu
Professor and Director
Advanced Flow Diagnostics and Experimental Aerodynamics Laboratory
Department of Aerospace Engineering
Iowa State University, Ames, Iowa 50011
 
时间：12月19日（周五）下午3:00
地点：工学院1号楼210会议室

报告内容摘要
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 aeromechanics and 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.

报告人简介
Dr. Hui Hu is a Professor of Aerospace Engineering at Iowa State University. Dr. Hu’s technical background is in the field of experimental aerodynamics, fluid mechanics and heat transfer with emphasis on developing and applying advanced flow diagnostic techniques to study various complex thermal fluids phenomena.  Dr. Hu’s recent research interests include wind energy and wind turbine aeromechanics; icing physics, aircraft and wind turbine anti-icing/de-icing technology; film cooling, trailing edge cooling and thermal management of gas turbine blades; low-speed aerodynamics and vortex flow controls; bio-inspired aerodynamic designs for micro-air-vehicle (MAV) applications; micro-flows and micro-scale heat transfer in microfluidics or “Lab-on-a-Chip” devices; tornado, microburst wind and fluid-structure interactions of built structures in violent winds.  Dr. Hu received several prestigious awards in recent years, including 2006 NSF-CAREER Award, 2007 Best Paper in Fluid Mechanics Award (Measurement Science and Technology, IOP Publishing), 2009 AIAA Best Paper Award in Applied Aerodynamics, 2012 Mid-Career Achievement in Research Award of Iowa State University, 2013 AIAA Best Paper Award in Ground Testing Technology, and 2014 Renewable Energy Impact Award of Iowa Energy Center. Further information about Dr. Hu’s technical background and recent research activities is available at: http://www.aere.iastate.edu/~huhui/
 
 
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