文件1.f90：生成翼型naca0012的椭圆网格，并计算流场，给出壁面压力分布

文件2.f90：maccormack方法解一维burger s方程

文件3.f90：解一维laval管流动，其进出口均为亚音速，喉道后部有激波-File 1.f90: generate the airfoil naca0012 elliptical rotary cell, and calculate the flow field, given the wall pressure distribution file 2.f90: maccormack method to solve the burger' s equation, one-dimensional file 3.f90: solution of one-dimensional laval tube flow, its progress exports are subsonic, the back of the throat have shock