摘要
本文描述了旋转管流的基本运动方程。在笛卡尔坐标系和柱坐标系中,针对两种基本的几何流动,推导出旋转情况下管内的流动方程,定义了影响旋转管流的流动和换热的两个无量纲准则数J和Ra,分析了二次流产生的原因,从而说明旋转对流动的影响以及旋转管流的运动特征。
This paper describes the basic equation in the rotating channels with cartesior coordinates and cylindrical coordinates. The non-dimensional number / (rotational number) and Ra (rotational Rayleigh Number) are defined from the differential equations. Meanwhile there is a secondary flow in the rotating tube, which effects the characteristic of flow. So that secondary flow is analysed in detail in this study.
关键词
流体
流动
旋转热管
传热
冷却
rotating fluid, rotating heat pipes, flow equations, heat transfer, cooling
