The porous medium in oil poolare simplified the undulating tube models, a mathematical mode is constructed from energyangle, effective numerical methods should be used.

• 根据真实多孔介质内部流道的收缩和扩张的特性,选取了具有相继收缩和扩张的周期过程,同时又具有几何上的简单性的波纹管模型。