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(第823期) Wind Turbine Aeromechanics and Wake Interferences in Onshore and Offshore Wind Farms

创建日期 2015/12/11 穗一   浏览次数  493   返回    
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                                                       力学所SEMINAR 823

题  目:  Wind Turbine Aeromechanics and Wake Interferences in Onshore and Offshore Wind Farms

报告人:  胡   晖   教授   (美国爱荷华州立大学)
                        
时  间:  12月16日(周三)下午1:30

地  点:  应用数学和力学所东会议室


Wind Turbine Aeromechanics and Wake Interferences in Onshore and Offshore Wind Farms

                                                                  Dr. Hui Hu
Professor and Director
Advanced Flow Diagnostics and Experimental Aerodynamics Laboratory
Department of Aerospace Engineering,
Iowa State University, Ames, Iowa 50011; Email: huhui@iastate.edu

Abstract
The recent research progress made in the speaker’s research laboratory on wind turbine aeromechanics and wake interferences among multiple wind turbines sited in onshore and offshore wind farms will be introduced.  The experimental studies are conducted in a large-scale Aerodynamic/Atmospheric Boundary Layer (AABL) Wind Tunnel available at Iowa State University. An array of scaled wind turbine models were placed in atmospheric boundary layer winds with different mean and turbulence characteristics to simulate the situations in onshore and offshore wind farms.  The effects of the spacing between turbines, turbine array layout, and terrain topology of wind farms on turbine performances and the wake interferences are investigated systematically.  In addition to measuring dynamic wind loads (both forces and moments) and the power outputs of the model turbines, a high-resolution Stereoscopic Particle Image Velocity (SPIV) system was used to conduct detailed flow field measurements to quantify the evolution of turbulent vortices and characteristics of 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 were correlated with the measured dynamic wind loads and power output data to elucidate underlying physics for higher total power yield and better durability of wind turbines operating in turbulent atmospheric boundary layer (ABL) winds.  
The speaker’s recent work on quantifications of important micro-physical processes pertinent to wind turbine icing phenomena by leveraging an icing research tunnel available at Iowa State University will also be introduced briefly for more accurate prediction of ice formation and accretion process on wind turbine blades as well as for the development of effective anti-/de-icing strategies tailored for wind turbine icing mitigation and protection.
 

    
Short-biography:  Dr. Hui Hu is a Professor of Aerospace Engineering at Iowa State University. Dr. Hu’s recent research interests include aircraft icing physics and anti-/de-icing technology; wind energy and wind turbine aeromechanics; film cooling, trailing edge cooling and thermal management of gas turbines; unsteady aerodynamics and 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; fluid-structure interactions of built structures in violent winds such as tornados, microbursts and storms.  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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