北京航空航天大学学报 ›› 2010, Vol. 36 ›› Issue (6): 690-693.

• 论文 • 上一篇    下一篇

波形隔板穿流孔孔径对通道流动和换热的影响

  

  1. (北京航空航天大学 航空发动机气动热力重点实验室, 北京 100191)
  • 收稿日期:2009-04-22 出版日期:2010-06-30 发布日期:2010-07-02
  • 作者简介:李莉(1980-),女,湖北荆门人,博士生,doubleli_lmt@126.com.

Effect of orifices‘diameter on heat transfer and flow resistance characteristic of passage

  • Received:2009-04-22 Online:2010-06-30 Published:2010-07-02

摘要:

采用数值模拟的方法,对波形隔板结构复合通道的换热和流阻特性进行研究.设计了6种不同穿流孔孔径的隔板,研究孔径对通道中流动和换热的影响.将大小相间孔隔板结构的数值结果与已有实验结果进行对比,趋势符合较好.数值研究结果表明:在均孔隔板结构中,当孔径小时,通道换热好,同时流阻大;当孔径增大时,通道换热变差,同时流阻降低.当隔板上穿流孔总穿流面积一定时,大小相间孔的隔板结构与均孔隔板结构相比,换热略好些.

Abstract:

Numerical simulation was performed to obtain heat transfer and flow resistance characteristics in a channel with zigzag divider wall. Six configurations with different diameters of the orifices were designed to predict the effect of the orifices’diameter on heat transfer of passage. The simulation results of the configurations with big-small diameter partition wall tend to agree with available experimental data. The results show that the heat transfer and the flow resistance both decrease with the diameter of the hole in the configuration with the same diameter partition wall. The heat transfer of the configuration with big-small diameter partition wall is better than that of the same diameter partition wall when the total flow area of holes is constant.

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