报告题目：

Flexibility, dynamic ground effect, and head stabilization: three tips for bio-inspired vehicles

报告人:                Daniel Quinn 教授

                                                                           University of Virginia

时间：2016年11月09日(周三)  10: 00       

地点：中科院力学所1号楼344会议室

报告摘要：

Animals use complex motions to reach high levels of efficiency, maneuverability, and stealth. These motions could inspire a new generation of advanced underwater and aerial vehicles. Three aspects of bio-inspired propulsion are discussed here: flexibility, near-boundary swimming, and head stabilization. Experimental work on flexible propulsors shows that swimming efficiency depends on wake vortex timing and boundary layer attachment, but also on fluid-structure resonance. As a result, flexible vehicles or animals could potentially improve their performance by tracking their resonance properties. Bio-inspired propulsors were also found to produce more thrust with no loss in efficiency when swimming near a solid boundary. Higher lift-to-drag ratios for near-ground fixed-wing gliders is commonly known as ground effect. This newly observed ``dynamic ground effect'' suggests that bio-inspired vehicles and animals could save energy by harnessing the performance gains associated with near-boundary swimming. Finally, passive head stabilization in flying birds is shown to be an effective strategy for reducing blur and jitter in the visual field. Animals and vehicles could thus improve their vision by tuning the stiffness properties of their head-neck system.

报告人简介：

Professor Daniel Quinn is a new faculty member at the University of Virginia. He graduated from Princeton University in 2015 after working on bio-inspired propulsion in the Hydrodynamics Lab with Professor Lex Smits. He also spent time as a Visiting Fellow at the Museum of Comparative Zoology at Harvard University, researching the propulsive strategies of rays and skates. After receiving his PhD, Professor Quinn became a Postdoctoral Fellow in the Bio-Inspired Research and Design group at Stanford University, studying the stability characteristics of birds flying in turbulent gusts. This fall, Professor Quinn joined the faculty at the University of Virginia. By doing so, he became one of the founding members of the Link Lab, a group of researchers studying Cyber-Physical Systems – particularly autonomous vehicles, body sensor networks, and smart homes.

报告联系人：沈楠  (office@lnm.imech.ac.cn 82543935)