用vba在word里编了一个画网格的程序。这个程序需要grid.dat保存在相同的目录下（和这个word文件）



生成了我的台阶流场。参看上传的附件。

-Using vba in word, made ​ ​ up a painting of the grid program. This program needs grid.dat stored in the same directory (word document)



Generate the steps of the flow field. See Attached.



Gill method than the Runge- Kutta method of higher accuracy in

Widely used in complex non-linear dynamics.