具有移动边界平行平板通道内的层流对流换热  

Numerical Investigation of Laminar Convective Heat Transfer in Parallel Channel with One Moving Boundary

作　　者：张东升[1] 王秋旺[1] 陶文铨[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《西安交通大学学报》2002年第5期473-476,共4页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(5 9995 4 6 0 - 2 ;5 980 6 0 11)

摘　　要：采用贴体坐标系来处理复杂边界 ,在同位网格中利用SIMPLE算法实现速度场与压力场的耦合 ,求解了平行平板通道一侧带有移动边界的层流对流换热问题 .计算结果表明 :换热量发生极值的时刻并不与移动边界移动到极值位置的时刻相对应 ,而是有一定的相位差 ;表征运动周期的Sr及运动边界的振幅对通道的换热量具有显著影响 ,但在相同的时段内 ,Sr对于壁面总换热量的影响较小 ,运动边界的振幅对壁面总换热量的影响显著 .另外 ,由于边界的移动 ,上。A method that can be used to solve the fluid flow and heat transfer in parallel channel with one moving boundary is presented in detail. The primitive variables formulation was adopted and a nonstaggered body-fitted grid system was used with Cartesian velocity components used as the primary unknowns in the momentum equations. The SIMPLE algorithm is employed to handle the velocity-pressure coupling. The results show that the moving boundary has great effects on the wall convective heat transfer. Both the moving period and amplitude affect the heat transfer rate of the side walls to some extent. However, in a given time period, the moving amplitude greatly affects the heat transfer amount while the Strouhal number only has a little influence on it. It is also found that the heat fluxes of the two walls increase because of the behavior of the moving boundary.

关 键 词：移动边界 平行平板通道 层流对流换热 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]