GPPS Hong Kong23: Technical Keynote Speaker
Aeroengine Icing Physics and Innovative Strategies for Icing Mitigation
Aero-engine icing is widely recognized as a significant hazard to aircraft operations in cold weather. The speaker will introduce his recent research in conducting comprehensive experimental campaigns to elucidate the underlying physics of aero-engine icing phenomena by leveraging a unique Icing Research Tunnel available at Iowa State University (i.e., ISU-IRT). A suite of advanced flow diagnostic techniques, including molecular tagging velocimetry and thermometry (MTV&T), digital image projection (DIP), and high-speed infrared (IR) imaging thermometry techniques, are developed and applied to quantify impinging dynamics of airborne, supercooled water droplets, transient wind-driven water runback flows, unsteady heat transfer and dynamic ice accretion processes over the surfaces of rotating fan blades and spinners. Anti-/de-icing performances of various bio-inspired, hydro-/ice-phobic coatings/surfaces, including a lotus-inspired superhydrophobic surface (SHS) and a pitcher-plant-inspired Slippery Liquid-Infused Porous Surfaces (SLIPS), are evaluated quantitatively under different icing conditions (i.e., ranged from dry rime icing to wet glaze icing conditions). The recent research efforts on aero-engine icing due to the inhalation of airborne ice crystals/particles as aircraft flying through high-altitude clouds will also be introduced briefly. The findings derived from the icing physics studies are extremely helpful in improving current icing accretion models and developing effective anti-/de-icing strategies to ensure the safer and more efficient operation of aero-engines in cold weather.
Prof. Hui Hu
Dr. Hu is the Martin C. Jischke Professor and Associate Dept. Chair for Graduate Education at the Department of Aerospace Engineering, Iowa State University. He received his BS, MS and PhD degrees in Aerospace Engineering from Beijing University of Aeronautics and Astronautics (BUAA) in China, and a Ph.D. degree in Mechanical Engineering from the University of Tokyo in Japan. His recent research interests include advanced optical/laser-based diagnostics, aircraft/aero-engine icing physics and anti-/de-icing technology; flight dynamics of Unmanned-Aerial-Systems (UAS); wind energy and wind turbine aeromechanics; Fluid-Structure Interactions (FSI) of built structures in violent windstorms (e.g., tornadoes, downbursts, and snowstorms).
Dr. Hu is an ASME Fellow and AIAA Associate Fellow. He is serving as an editor of “Experimental Thermal and Fluid Science-Elsevier” and an associate editor of “ASME Journal of Fluid Engineering” and “ASME Open Journal of Engineering”. 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, 2014 Renewable Energy Impact Award of Iowa Energy Center, and 2022 AIAA Best Paper Award in Gas Turbine Engines. Further information about Dr. Hu’s technical background and research activities is available at the Iowa State University Laboratory Webpage.