Solution of 2D navier-Stokes equation

基于流体力学纳威-斯托克方程（n-s方程）来模拟游戏中烟雾的产生和扩散。-Based on fluid mechanics neville- stokes equation (n- s equation) to simulate the smoke generated in the game and diffusion.

Staggered grid method to solve navier stokes equation.