国家数学与交叉科学中心合肥分中心报告

报告题目：Modeling and simulation of moving contact line problem for
two-phase complex fluids flow
报告人：张振，新加坡国立大学数学系
时  间：2015年4月1日    下午4:00―5:00
地  点：东区管理科研楼  365英国上市官网1218室
内容提要：
We introduce the sharp interface models for moving contact lines with insoluble surfactants and polymeric fluids. A continuous model is derived for the dynamics of two immiscible fluids with moving contact lines and insoluble surfactants based on thermodynamic principles. The continuum model consists of the Navier-Stokes equations for the dynamics of the two fluids and a convection-diffusion equation for the evolution of the surfactant on the fluid interface. The interface condition, the boundary condition for the slip velocity, and the condition for the dynamic contact angle are derived from the consideration of energy dissipations. The model is extended to moving contact lines for polymeric fluids. Front tracking based numerical methods are developed for the continuum models. Numerical experiments show that the addition of surfactant enhances the contact line movement while the addition of polymer reduces the contact line slip.

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