本程序是有限时域差分源程序，有详细注解，方便学习理解。-This program is a limited time domain difference source program, has detailed notes, easy to learn to understand.

这是一个二维完全纳维-斯托克斯方程的显式有限差分解法-This is a two-dimensional full Navier- explicit finite difference method for Stokes equations