旋转方位角对斜肋通道内部流动与换热的影响

刘传凯; 丁水汀; 邱 天; 陶 智

旋转方位角对斜肋通道内部流动与换热的影响

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

详细信息

作者简介:
刘传凯(1979-),男,黑龙江桦南人,博士后,liuchuankai@buaa.edu.cn.

中图分类号: V 235.1
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- 文章访问数: 3762
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- 被引次数: 0
出版历程
- 收稿日期: 2008-10-08
- 网络出版日期: 2009-10-31

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

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

摘要

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.
- 燃气轮机 /
- 冷却叶片 /
- 对流传热 /
- 数值模拟 /
- 旋转
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.
- gas turbines /
- cooling blades /
- convective heat transfer /
- numerical simulation /
- rotating

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参考文献(1)

[1] Wagner J H, Johnson B V, Hajek T J. Heat transfer in rotating passages with smooth walls and radial outward flow[J]. Journal of Turbomachinery, 1991,113:42-51 [2] Fu W L, Wright L M, Han J C. Heat tranfer in two-pass rotating rectangular channels (AR=1:2 AND AR=1:4) with smooth walls[J]. Journal of Heat Transfer, 2005, 127:265-277 [3] Iacovides H, Kounadis D, Launder B E. Experimental study of thermal development in a rotating square-ended U-bend. ASME Paper No. 2006-GT-90846,2006 [4] Willett F T, Bergles A E. Heat transfer in totating narrow rectangular ducts with heated walls at 60 to the R-Z plane[J]. Journal of Turbomachinery, 2001, 123:288-295 [5] 刘传凯, 陶智, 丁水汀,等. 3种转角下旋转U形方通道的局部换热[J]. 北京航空航天大学学报, 2006, 32(3):284-287 Liu Chuankai, Tao Zhi, Ding Shuiting, et al. Local heat transfer in a rotating U-shaped square channel with three channel orientations[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(3):284-287(in Chinese) [6] Han J C, Park J S, Lei C K. Heat transfer enhancement in channels with turbulence promoters[J]. Journal of Engineering for Gas turbines and Power, 1985, 107:628-635 [7] Parsons J A, Han J C. Zhang Y M. Effect of model orientation and wall heating condition on local heat transfer in a rotating two-pass square channel with rib turbulators[J]. International Journal of Heat and Mass Transfer, 1995, 38:1151-1159 [8] Fu W L, Wright L M, Han J C. Heat transfer in two-pass rotating rectangular channels (AR=1:2 and AR=1:4) with 45 deg angled rib turbulators[J]. Journal of Turbomachinery, 2005, 127:164-174 [9] Wilcox D C. Turbulence modeling for CFD[M]. California: DCW Industries Inc, 1993 [10] Sleiti A, Kapat J S. Effect of Coriolis and centrifugal forces at high rotation and density ratios[J]. Journal of Thermophysics and Heat Transfer, 2006, 20(1):67-79 [11] 刘传凯. 旋转蛇形通道内冷气的流动与换热机理研究. 北京:北京航空航天大学能源与动力工程学院, 2006 Liu Chuankai. Study on fluid flow and heat transfer in rotating serpentine cooling channels. Beijing:School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, 2006(in Chinese)

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