摘要
分别采用针对流体质点系统的拉格朗日（Ｌａｇｒａｎｇｅ）法和针对流场中控制体的欧拉（Ｅｕｌｅｒ）法推导得到了雷诺（Ｒｅｙｎｏｌｄｓ）输运方程。并对上述两种方法的推导过程进行了分析比较。
The Reynolds’transportation equation is derived by means of Lagrangian method for the fluid particles system and Eulerian method for the control volume in the fluid field.Its derivation with two methods are analyzed and compared。
关键词
质点流动
流体运动方程
雷诺方程
particle flow
fluid motion equations,Reynolds equation/Lagrangian method,Eulerian method
