Speaker: Zhuang Su (NYU Shanghai)
Time: 2025-10-27 11:00-12:00
Location: 1310, SIMIS
Zoom Meeting ID:844 0594 7424 Passcode:076895
Abstract: The vortex ring is a ubiquitous coherent flow structure commonly observed in nature. Since Helmholtz first introduced the equations for vortex rings in 1858, related problems have fascinated both mathematicians and physicists. This report presents the experimental investigations of a vortex ring reflecting at a water–air interface and introduces a vortex-sheet-vortex-pair model to simulate this phenomenon numerically as a dynamical system. By tracing the history of the problem, this report also touches on its connections to knot theory and problems in electromagnetism.
About Speaker: Dr. Zhuang Su got hia bachelor’s degree in Mathematics and Applied Mathematics from Sichuan University, China, and got hiay doctoral degree in Fluid Mechanics from Peking University, specializing in experimental fluid mechanics. His research interests focus on vortical flows, turbulent mixing, and flow filed measurement techniques. He is currently working in the Applied Math Lab at NYU Shanghai.
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