开缝对波纹翅片流动和换热性能影响的数值分析

被引:5
作者
许伟
闵敬春
机构
[1] 清华大学航天航空学院
[2] 清华大学航天航空学院 北京
[3] 北京
关键词
换热; 流动; 开缝; 波纹翅片;
D O I
10.16511/j.cnki.qhdxxb.2005.05.025
中图分类号
TK172 [换热设备];
学科分类号
080702 ;
摘要
为了分析开缝对波纹翅片流动和换热性能的影响,对3种开缝波纹翅片进行了数值模拟。结果表明:对于连续型波纹翅片,开缝有利于消除横向涡,并使流体混合得更加充分,从而提高翅片的流动和换热性能;在开缝翅片的拐角和缝隙处,局部换热系数变化剧烈;换热系数的极大值出现在拐角上游或者翅片的前缘,而极小值则出现在拐角下游或者翅片的后缘。
引用
收藏
页码:673 / 676
页数:4
相关论文
共 6 条
[1]  
A comparative study of compact enhanced fin-and-tube heat exchangers. Wang C C,Lee W S,Sheu W J. I nternational Journal of Heat and Mass Transfer . 2001
[2]  
Numerical predictions of fluid flow and heat transfer in corrugated channels using time-dependent and time-independent flow models. Xu W,Min J C. J ournal of Enhanced Heat Transfer . 2004
[3]  
Local flow and heat transfer behavior in convex-louver fin arrays. DeJong N C,Jacobi A M. J ournal of Heat Transfer . 1999
[4]  
A numerical study of the effect of interwall spacing on turbulent flow in a corrugated duct. Ergin S,Ota M,Yamaguchi H,et al. Proceedings of the ASME Heat Transfer Division . 1996
[5]  
Influence of design parameters on the heat transfer and flow friction characteristics of the heat exchangers with slit fins. Yun J Y,Lee K S. I nternational Journal of Heat and Mass Transfer . 2000
[6]  
Experiments on convective heat transfer in a corrugated channel. Ali M M,Ramadhyani S. E xperimental Heat Transfer . 1992