Topic: Biomechanics and Biomimetics in Bioinspired Flight Systems

Presented by: Prof. Hao Liu, Chiba University, Japan

Chaired by: Prof. Zhuihui Qian, Jilin University, China

Time: June 28, 2024 06:30 PM (Beijing time)

Venue: Zoom ID: 645 183 7824; Passcode: 202361

Direct link：

https://us02web.zoom.us/j/6451837824?pwd=ZalOYUoX7rpTbwNf4e1U2bMXYZ972V.1&omn=84348831187

Hao LIU is professor of mechanical engineering at Chiba University, and director of Center for Aerial Intelligent Vehicles (CAIV). He is a fellow of the Japan Society of Mechanical Engineers (JSME). He is selected among Top Leading Scientists in the fields of engineering & technology (research.com) and Top 2% Scientist (Stanford University). Prior to joining Chiba University in 2003, he was a senior research scientist in RIKEN (The Institute of Physical and Chemical Research). He is the author of more than 250 papers in refereed journals and 20 book chapters with more than 11720 citations (h-index:48)(Google Scholar), mainly dealing with computational mechanics, biomechanics in flying and swimming, fluid-structure interaction, biomimetics, insect-inspired micro air vehicles, and bio-inspired engineering as well as multi-scale, multi-physical modeling of the cardiovascular system, and AI-driven predictive medicine. He has received several awards including JACM Computational Mechanics Award, and his professional views have been quoted in several news media, including NHK, AFP, Thomson Reuter, and most major newspapers in Japan, including Yomiuri-Shimbun, Asashi-Shimbun, Nihon Keizai Shimbun, Nikkan etc.

Abstract

In this seminar, I will first highlight the state of the art of biomechanics in bioinspired flight systems in terms of vortex-dominated, unsteady aerodynamics from the viewpoint of diversity and uniformity associated with dominant vortices, particularly of the relevant physical aspects of the flight of insects and birds from tiny featherwing beetle up to large owl in the low Reynolds-number (Re) regime of 100 to 105. An overview is given of the main technical aspects comprising the leading-edge vortices, vortices during wing rotation, wing-body interaction, flexible wing- and wing hinge-induced wing-flow interaction, wing-wake interactions, and aeroacoustics from a combined theoretical, computational, and experimental perspective. An overview will be further given on recent advances in biomimetics associated with bioinspired flight systems with a focus on owl-inspired aeroacoustic designs of wings and propellers. Finally, I will give a summary of the main results and the future issues in the field.