留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

带肋变截面回转通道内流动与换热的数值模拟

朱剑琴 徐国强 陶 智 丁水汀

朱剑琴, 徐国强, 陶 智, 等 . 带肋变截面回转通道内流动与换热的数值模拟[J]. 北京航空航天大学学报, 2009, 35(1): 18-22.
引用本文: 朱剑琴, 徐国强, 陶 智, 等 . 带肋变截面回转通道内流动与换热的数值模拟[J]. 北京航空航天大学学报, 2009, 35(1): 18-22.
Zhu Jianqin, Xu Guoqiang, Tao Zhi, et al. Numerical investigation of heat transfer and flow resistance in U-shaped variable cross-section channels with different rib heights[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(1): 18-22. (in Chinese)
Citation: Zhu Jianqin, Xu Guoqiang, Tao Zhi, et al. Numerical investigation of heat transfer and flow resistance in U-shaped variable cross-section channels with different rib heights[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(1): 18-22. (in Chinese)

带肋变截面回转通道内流动与换热的数值模拟

详细信息
    作者简介:

    朱剑琴(1983-),女,湖南衡阳人,博士生,zhujianqinbuaa@sina.com.

  • 中图分类号: V 231.1

Numerical investigation of heat transfer and flow resistance in U-shaped variable cross-section channels with different rib heights

  • 摘要: 开发了三维流动换热的通用计算程序,数值研究了带肋变截面回转通道内流动与换热的特性.湍流模型采用低雷诺数k-ε模型.通道肋间距为25 mm,肋高分别为1 mm,1.5 mm,2 mm,冷气进口雷诺数Re分别为7 500,12 500,18 500,25 000.计算结果表明:①通道的平均努赛尔数均随进口雷诺数的增大而增大;②对于Re=7 500和12 500,肋高越高,换热越强;对于Re=18 500和25 000,肋高为1.5 mm的通道换热最强;③局部雷诺数的不同和离心力的影响导致通道内各区域的局部换热随肋高的变化趋势并不一致;在进口段,肋高越高,换热越强;在出口段,当Re=7 500和12 500时,肋高越高,换热越强,而当Re=18 500和25 000时,存在最佳肋高1.5 mm.

     

  • [1] Chyu M K. Regional heat transfer in two-pass and three-pass passages with 180° turns [J]. ASME Journal of Heat Transfer , 1991,113:63-70 [2] Ekkad S V, Han J C. Detailed heat transfer distributions in two-pass square channels with rib turbulators [J]. Int J Heat Mass Transfer, 1997,40(11):2525-2537 [3] Ekkad S V, Huang Y Z, Han J C. Detailed heat transfer distributions in two-pass square channels with rib turbulators and bleed holes[J]. Int J Heat Mass Transfer, 1987, 41(23): 3781-3791 [4] Ekkad S V, Pamula G, Shantiniketanam M. Detailed heat transfer measurements inside straight and tapered two-pass channels with turbulators [J]. Experimental Thermal and Fluid Science , 2000,22:155-163 [5] Hirota M, Fujita H, Cai H, et al. Heat (mass) transfer in rectangular cross-sectioned two-pass channels with an inclined divider wall[J]. Int J Heat Mass Transfer, 2002,45:1093-1107 [6] Liu X Y, Ding S T, Tao Z, et al. Heat transfer characteristic inside two-pass variable cross-section channels with ribs and bleed holes . ASME GT2004-53529,2004 [7] 刘湘云,丁水汀,陶智,等.变截面U型通道内肋高对换热特性影响的实验[J].航空动力学报,2007,22(7):1138-1141 Liu Xiangyun, Ding Shuiting, Tao Zhi, et al. Experimental study of heat transfer in snake-shaped variable cross-section channels with different rib heights[J]. Journal of Aerospace Power, 2007, 22(7): 1138-1141(in Chinese) [8] 吴望一.流体力学[M].北京:北京大学出版社,1983 Wu Wangyi. Fluid dynamics[M]. Beijing: Peking University Press, 1983(in Chinese)
  • 加载中
计量
  • 文章访问数:  3163
  • HTML全文浏览量:  226
  • PDF下载量:  1191
  • 被引次数: 0
出版历程
  • 收稿日期:  2008-01-04
  • 网络出版日期:  2009-01-31

目录

    /

    返回文章
    返回
    常见问答