讲座题目：Drop Dynamics in Complex Fluids: Observations and Simulations

报告人：James J. Feng

时 间：5月27日（周五）上午10：00
地 点：力学楼434室
主持人：张信荣

报告内容摘要：
    Complex fluids have microstructures that evolve during flow, and their dynamics tend to be coupled to interfacial deformation. Thus, interfaces of complex fluids exhibit unusual behavior, and this is exemplified by the dynamics of bubbles and drops in viscoelastic and nematic liquids. In this talk, I will introduce a diffuse-interface model for simulating interfacial dynamics in complex fluids. Its application is illustrated by using two intriguing phenomena: (i) partial coalescence between a drop and an interface for Newtonian and polymeric liquids; (ii) evolution of orientational defects around drops rising in a nematic liquid crystal. Experimental observations will be analyzed and explained by detailed numerical computations.

报告人简介：
    Jimmy (Jingtao) Feng is a PKU alumnus who received his BS and MS from the Mechanics Department in 1985 and 1988. After getting his PhD from the University of Minnesota in 1995, he was a postdoc at UC Santa Barbara before joining the Levich Institute, City College of New York, in 1998. In 2004 he moved to UBC to become the Canada Research Chair in Complex Fluids and Interfaces. He was a recipient of the US NSF Career Award (2000), NSERC Discovery Accelerator Award (2009) and UBC's Killam Faculty Research Fellowship (2010). His current interests include interfacial dynamics in complex fluids, biological cell motility and tissue morphogenesis.