N-S方程在不同坐标中的直接导出

N-S equation at coordinates can be got dorctly

采用直接微分运算的方法 ,将哈密顿算子 ( )及拉普拉斯算子 ( 2 )换算成柱坐标及球坐标的表示式 ,进而经过直接微分运算 ,给出纳维———斯托克斯 (N S )

This paper gives the illustrations of Hamilton operator () and laplace operator ( 2) in cylin drical and spherical coordinates with ordinary differential methods, by which the illustrations of Navier—Stokes equation in cylindrical and spherical coordinates can be got directly.