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Mechanical Engineering Graduate Seminar: Hui Hu
Sep 27, 2018
03:30 PM - 04:20 PM
3505 Seamans Center
3131 Seamans Center, Iowa City, IA 52242
Aircraft Icing Physics and Innovative Strategies for Inflight Icing Mitigation
Presented by Dr. Hui Hu, Ph.D
Martin C. Jischke Professor in Aerospace Engineering
Assoc. Dept. Chair for Graduate Education, Department of Aerospace Engineering
Iowa State University
Abstract: Aircraft icing is widely recognized as a significant hazard to aircraft operations in cold weather. In this talk, the recent progress made in the speaker’s research laboratory in conducting a series of experimental studies to elucidate underlying physics pertinent to aircraft icing phenomena will be introduced. By leveraging a unique Icing Research Tunnel available at Iowa State University (ISU-IRT), comprehensive investigations are conducted to examine the important micro-physical processes pertinent to aircraft icing phenomena. A suite of advanced flow diagnostic techniques, which include molecular tagging velocimetry and thermometry (MTV&T), digital image projection (DIP), and high-speed infrared (IR) imaging thermometry techniques, are developed and applied to achieve quantitative measurements to quantify the dynamics of water droplet impingement, transient behavior of the wind-driven surface water runback, unsteady heat transfer and dynamic ice accretion process over the surfaces of airfoil/wing models. The anti-/de-icing performance of various bio-inspired icephobic coatings, including lotus-inspired superhydrophobic coatings, pitcher-plant-inspired Slippery Liquid-Infused Porous Surfaces (SLIPS) and novel durable icephobic soft gel surfaces, are evaluated quantitatively at different icing conditions (i.e., ranged from dry rime icing to wet glaze icing conditions). The research efforts on aero-engine icing and anti-/de-icing as well as development of novel active anti-/de-icing strategies by utilizing Dielectric-Barrier-Discharge (DBD) plasma actuation will also be introduced briefly. The findings derived from the icing physics studies can be used to improve current icing accretion models for more accurate prediction of ice formation and accretion process over airframe surfaces and to develop effective anti-/de-icing strategies for safer and more efficient aircraft operation in cold weathers.
Individuals with disabilities are encouraged to attend all
Individuals with disabilities are encouraged to attend all University of Iowa–sponsored events. If you are a person with a disability who requires a reasonable accommodation in order to participate in this program, please contact in advance at