The Cahn–Hilliard equation with a concentration dependent mobility: motion by minus the Laplacian of the mean curvature 论文

详细信息

发表期刊/会议

European Journal of Applied Mathematics

发表日期

1996-06-01

发表年份

1996

摘要

We show by using formal asymptotics that the zero level set of the solution to the Cahn–Hilliard equation with a concentration dependent mobility approximates to lowest order in ɛ. an interface evolving according to the geometric motion, (where V is the normal velocity, Δ 8 is the surface Laplacian and κ is the mean curvature of the interface), both in the deep quench limit and when the temperature θ is where є 2 is the coefficient of gradient energy. Equation (0.1) may be viewed as motion by surface diffusion, and as a higher-order analogue of motion by mean curvature predicted by the bistable reaction-diffusion equation.