微小通道内空气流动特性实验研究

郑光华; 张凯; 魏文强; 贺宜红

doi:10.3879/j.issn.1000-0887.2014.03.005

微小通道内空气流动特性实验研究

doi: 10.3879/j.issn.1000-0887.2014.03.005

¹西北工业大学动力与能源学院, 西安 710072;²中国航空动力机械研究所, 湖南株洲 412002

详细信息

作者简介:
郑光华（1978—），男，湖北孝感人，副教授，博士，硕士生导师(通讯作者. E-mail: zhengguanghua@nwpu.edu.cn)

中图分类号: O354.1
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出版历程
- 收稿日期: 2013-09-26
- 修回日期: 2013-12-22
- 刊出日期: 2014-03-15

Experimental Study of Air Flow Characteristics in Micro-Channels

¹School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, P.R.China;²China Aviation Powerplant Research Institute, Zhuzhou, Hunan 412002, P.R.China

摘要

摘要: 研究了空气在不同压比条件下，在内径分别为0.4 mm和0.5 mm的微圆直管内的流动特性．研究表明空气流过微圆管的阻力系数是常规管道的4至5倍，且存在层流状态提前过渡到湍流状态的提前转捩现象．微圆管管径越小，管内流动压力损失越大.
- 微通道 /
- 阻力系数 /
- 流动特性 /
- 提前转捩
Abstract: The flow characteristics in micro-channels with inner diameters of 0.4 mm and 0.5 mm at different pressure ratios were experimentally studied. The resistance coefficients in the micro-channels are 4 to 5 times of those of the conventional channels, and the phenomenon of early transition from laminar flow to turbulence in advance is well explained. The smaller the diameter of a micro-channel is, the greater the flowing pressure loss results.
- micro-channel /
- resistance coefficient /
- flow characteristics /
- early transition

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参考文献(8)

[1]	陶然, 权晓波, 徐建中. 微尺度流动研究中的几个问题[J]. 工程热物理学报, 2001,22(5): 575-577.(TAO Ran, QUAN Xiao-bo, XU Jian-zhong. Several questions in research of micro scale flow[J].Journal of Engineering Thermophysics,2001,22(5): 575-577.(in Chinese))
[2]	Ergu O B, Sara O N, Yapici S, Arzutug M E. Pressure drop and point mass transfer in a rectangular microchannel[J].International Communications in Heat and Mass Transfer,2009,36(6): 618-623.
[3]	罗小平, 陈海洋. 矩形微槽道内对流换热的试验研究[J]. 石油机械, 2009,37(11）: 1-4, 7.(LUO Xiao-ping, CHEN Hai-yang. Experimental investigation of rectangular micro-channel convective heat transfer[J].China Petroleum Machinery,2009,37(11): 1-4, 7.(in Chinese))
[4]	张田田, 贾力, 李成文. 微尺度气体流动特性实验研究[J]. 工程热物理学报, 2009,30(5): 854-856.(ZHANG Tian-tian, JIA Li, LI Cheng-wen. Experimental study on gas flow characteristics in microchannels[J].Journal of Engineering Thermophysics,2009,30(5): 854-856.(in Chinese))
[5]	王樱, 刁彦华, 赵耀华. 矩形微管内摩擦阻力特性的实验研究[J]. 工程热物理学报, 2009,30(5): 841-843.(WANG Ying, DIAO Yan-hua, ZHAO Yao-hua. Experimental study of frictional characteristics on rectangular microtubes[J].Journal of Engineering Thermophysics,2009,30(5): 841-843.(in Chinese))
[6]	Hsieh S S, Tsai H H, Lin C Y, Huang C F, Chien C M. Gas flow in a long micro channel[J].International Journal of Heat and Mass Transfer,2004,47(17/18): 3877-3887.
[7]	Kohl M J, Abdel-Khalik S I, Jeter S M, Sadowski D L. An experimental investigation of microchannel flow with internal pressure measurements[J].International Journal of Heat and Mass Transfer, 2005,48(8): 1518-1533.
[8]	王新月. 气体动力学基础[M]. 西安: 西北工业大学出版社, 2006.(WANG Xin-yue.Gas Dynamics Foundation[M]. Xi’an: Northwestern Polytechnical University Press, 2006. (in Chinese)）