北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (10): 1188-1191.

• 论文 • 上一篇    下一篇

旋转方位角对斜肋通道内部流动与换热的影响

刘传凯1, 丁水汀1, 邱 天2, 陶 智2   

  1. 1. 北京航空航天大学 交通科学与工程学院, 北京 100191;
    2. 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:2008-10-08 出版日期:2009-10-31 发布日期:2010-09-16
  • 作者简介:刘传凯(1979-),男,黑龙江桦南人,博士后,liuchuankai@buaa.edu.cn.

Effects of channel orientation on fluid flow and heat transfer in a channel with angled ribs

Liu Chuankai1, Ding Shuiting1, Qiu Tian2, Tao Zhi2   

  1. 1. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
    2. National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2008-10-08 Online:2009-10-31 Published:2010-09-16

摘要: 数值模拟了静止及旋转状态下径向出流60°斜肋通道的内流动与换热分布,研究了3种旋转方位角:0°,-45°及+45°.分析了哥氏力与肋片对旋转通道内流及换热的耦合作用机理.计算结果表明:旋转方位角对通道的内流与换热影响显著.在0°旋转方位角下,通道前后缘的换热差异最大;在-45°方位角下,通道整体换热性能最差;在+45°方位角下,通道具有最佳的整体换热性能.

Abstract: Numerical simulations of turbulent flow and heat transfer in a rotating radial outward flow passage with 60° ribs were performed. Three channel orientations were studied, that is, 0°,-45° and +45°. Effects of Coriolis and rib induced secondary flows were analyzed with the three dimensional simulations and the following conclusions were drawn: the combined effects of Coriolis and rib induced secondary flows largely depend on channel orientation. The 0° channel orientation produces largest heat transfer variation between leading and trailing edges, the -45° channel orientation gives the lowest overall heat transfer augmentation, while the +45° channel orientation has the highest overall heat transfer enhancement.

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