高旋转数下带肋回转通道的换热特性

张洪; 田淑青; 邓宏武; 李洋

doi:10.13224/j.cnki.jasp.2016.02.014

高旋转数下带肋回转通道的换热特性

doi: 10.13224/j.cnki.jasp.2016.02.014

1. 中国航空工业集团公司中航商用航空发动机有限责任公司设计研发中心, 上海 201108;
2. 北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室, 北京 100191

详细信息

作者简介:
张洪(1985-),男,安徽旌德人,工程师,博士,主要从事航空发动机涡轮叶片冷却结构设计方面的研究.

中图分类号: V235.1
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出版历程
- 收稿日期: 2014-06-07
- 刊出日期: 2016-02-28

Heat transfer characteristics in U-shaped rib-roughened channel at high rotation numbers

1. Research and Development Center, Commercial Aircraft Engine Company Limited, Aviation Industry Corporation of China, Shanghai 201108, China;
2. National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 为匹配真实发动机转子叶片的工作条件,将实验回转通道气体压力提高到500kPa以上,使雷诺数和旋转数范围分别扩展到10000~70000和0~2.08.在此基础上通过实验方法研究了高旋转数下带45°倾角斜肋的方形截面回转通道的换热特性.结果表明:回转通道的第1通道前缘面传热系数随旋转数的增大先减小,在达到临界旋转数后换热随旋转数增大而增强;低旋转数下,回转通道的第2通道前后缘面换热差异较小,随着旋转数的增大,前缘面换热始终强于后缘面,这种换热特性与光滑通道完全不同.
- 雷诺数 /
- 高旋转数 /
- 斜肋 /
- 回转通道 /
- 换热特性
Abstract: To match the rotor blade of real engine operating condition, the Reynolds and rotation number range of current experiment were expanded from 10000 to 70000 and 0 to 2.08 by increasing the pressure of the air in the U-shaped channel to 500kPa. Experiments were conducted to investigate the heat transfer characteristics in a square U-shaped channel with inclined 45 deg ribs. Results indicated that,in the first passage of the U-shaped channel, heat transfer coefficient of leading wall firstly decreased with the increase of the rotation number, then increased with the rotation number after reaching a critical value; in the second passage of the U-shaped channel, the difference of heat transfer coefficient between leading and trailing walls was not obvious at low rotation number, but kept increasing with the rotation number to a higher level; the heat transfer of leading wall behaved better than trailing wall, which was totally different from that of a smooth channel.
- Reynolds number /
- high rotation number /
- inclined rib /
- U-shaped channel /
- heat transfer characteristics

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参考文献(18)

[1]	Wanger J H,Johnson B V,Kopper F C.Heat transfer in rotating serpentine passage with smooth walls[R].ASME Paper 90-GT-331,1990.
[2]	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(1):42-51.
[3]	Yang W J,Zhang N,Chiou J.Local heat transfer in a rotating serpentine flow passage[J].Journal of Heat Transfer,1992,114(2):354-361.
[4]	Han J C,Zhang Y M.Effect of uneven wall temperature on local heat transfer in a rotating square channel with smooth walls and radial outward flow[J].Journal of Heat Transfer,1992,114(4):850-858.
[5]	Han J C,Zhang Y M,Kalkuehler K.Uneven wall temperature effect on local heat transfer in a rotating two-pass square channel with smooth walls[J].Journal of Heat Transfer,1993,115(4):912-920.
[6]	Hwang G J,Kuo C R.Experimental studies and correlations of convective heat transfer in a radically rotating serpentine passage[J].Journal of Heat Transfer,1997,119(3):460-466.
[7]	Liou T M,Chang S W,Hung J H,et al.High rotation number heat transfer of a 45 degrees rib-roughened rectangular duc twith two channel orientations[J].International Journal of Heat and Mass Transfer,2007,50(19/20):4063-4078.
[8]	ZHOU Fuguo,Lagrone J,Acharya S.Internal cooling in 4:1 AR passages at high rotation numbers[J].Journal of Heat Transfer,2007,129(12):1666-1675.
[9]	Huh M,JIANG Lei,Han J C.Influence of channel orientation on heat transfer in a two-pass smooth and ribbed rectangular channel (AR=2:1) under large rotation numbers[R].ASME Paper GT2010-22190,2010.
[10]	Chang S W,Liou T M,Liou P Y.Coriolis and rotating buoyancy effect on detailed heat transfer distributions in a two-pass square channel roughened by 45° ribs at high rotation numbers[J].International Journal of Heat and Mass Transfer,2010,53(7/8):1349-1363.
[11]	王宝官,王武,吉洪湖.模拟涡轮叶片内部冷却通道方管和收缩管换热的实验研究[J].工程热物理学报,1997,18(5):608-611. WANG Baoguan,WANG Wu,JI Honghu.Experimental investigation of heat transfer simulation in the turbine blade with rotating square and taper tubes[J].Journal of Engineering Thermophysics,1997,18(5):608-611.(in Chinese)
[12]	邓宏武,陶智,徐国强,等.旋转状态下有转角带肋U 形通道内换热实验研究[J].大连理工大学学报,2001,41(1):38-41. DENG Hongwu,TAO Zhi,XU Guoqiang,et al.Experimental investigation on heat transfer within a rotating ribbed serpentine passage with stagger angles[J].Journal of Dalian University of Technology,2001,41(1):38-41.(in Chinese)
[13]	邓宏武,魏喆,陶智,等.旋转状态下蛇形通道内流动与换热的机理研究[J].航空学报,2005,26(4):411-416. DENG Hongwu,WEI Zhe,TAO Zhi,et al.Study on mechanism of turbulent flow and heat transfer in rotating passages[J].Acta Aeronautica et Astronautica Sinica,2005,26(4):411-416.(in Chinese)
[14]	刘传凯,陶智,丁水汀,等.旋转对光滑U形通道内换热的影响研究[J].航空动力学报,2006,21(3):512-517. LIU Chuankai,TAO Zhi,DING Shuiting,et al.Effect of Rotation on Heat Transfer in a Rotating U-Shaped Passage[J].Journal of Aerospace Power,2006,21(3):512-517.(in Chinese)
[15]	程俊华,倪彬,邓宏武,等.高旋转数内冷通道换热实验技术及验证[J].航空动力学报,2014,29(8):1817-1823. CHENG Junhua,NI Bing,DENG Hongwu,et al.Experimental technique and its validation for heat transfer in cooling channels at high rotation numbers[J].Journal of Aerospace Power,2014,29(8):1817-1823.(in Chinese)
[16]	Deng H W,Qiu L,Tao Z,et al.Heat transfer study in rotating smooth square U-duct at high rotation numbers[J].International Journal of Heat transfer and Mass Transfer,2013,66(11):733-744.
[17]	Qiu L,Deng H W,Sun J N,et al.Pressure drop and heat transfer in rotating smooth square U-duct under high rotation numbers[J].International Journal of Heat transfer and Mass Transfer,2013,66(6):543-552.
[18]	Dutta S,Andrews M J,Han J C.Prediction of turbulent heat transfer in rotating smooth square ducts[J].International Journal of Heat and Mass Transfer,1996,39(12):2505-2514.