Experimental study of the flow fields of the impinging jet flames using Laser Doppler Velocimetry (LDV)

Fang Yuanqi; Li Lin; Zhong Liang; Yu Yu; Cai Guohan; Chen Kaixi; Chen Jiao; Wang Gaofeng

doi:10.11729/syltlx20160161

Volume 33 Issue 1

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Fang Yuanqi, Li Lin, Zhong Liang, et al. Experimental study of the flow fields of the impinging jet flames using Laser Doppler Velocimetry (LDV)[J]. Journal of Experiments in Fluid Mechanics, 2019, 33(1): 79-88. doi: 10.11729/syltlx20160161

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Experimental study of the flow fields of the impinging jet flames using Laser Doppler Velocimetry (LDV)

doi: 10.11729/syltlx20160161

1.
School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
2.
Zhejiang Provincial Key Laboratory of Healthy & Intelligent Kitchen System Integration, Ningbo Zhejiang 315336, China

Received Date: 2016-10-26
Rev Recd Date: 2018-04-27
Publish Date: 2019-02-25

Abstract

Abstract

A Laser Doppler Velocimetry system containing a particle generator, a particle collector and a motorized precision translation stage is built to diagnose the fluid fields of a vertical flow burner. The free jet flame and impinging jet flame are investigated, both for a single nozzle (200W power) and a coaxial dual-nozzle (1200W power). An adaptable signal to noise ratio (SNR) threshold is analyzed and employed for post-processing. The experimental data shows high repeatability and accuracy in multiple measurements. For impinging jet cases, the Reynolds numbers (Re) of low power and high power flame are 1200 and 7200, respectively. The mean velocity vectors and contours are sketched from the measurements at different axial and radial positions, displaying the main characteristics of the impinging jet flame. Meanwhile, a peak of the horizontal velocity occurs roughly at one-nozzle-diameter distance departed from the nozzle axis in the near-wall region. This feature possibly provides an explanation for the mechanism of the secondary peak of the heat transfer captured in previous literatures. For the cases of coaxial jet, a mixing region exists between the outer annular jet and the core jet:the mixing zone is gradually damped with the development of the free jet flame, whereas radially expanding in the impinging flame driven by the high-pressure stagnation region.
- impinging jet flame,
- LDV,
- flow field visualization,
- enhanced heat transfer,
- coaxial jet

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References(32)

References

[1]	Kadam A R, Tajik A R, Hindasageri V. Heat transfer distribution of impinging flame and air jets-A comparative study[J]. Applied Thermal Engineering, 2016, 92:42-49. doi: 10.1016/j.applthermaleng.2015.09.008
[2]	Chander S, Ray A. An experimental and numerical study of stagnation point heat transfer for methane/air laminar flame impinging on a flat surface[J]. International Journal of Heat and Mass Transfer, 2008, 51(13-14):3595-3607. doi: 10.1016/j.ijheatmasstransfer.2007.10.018
[3]	Remie M J, Cremers M F G, Schreel K R A M. Analysis of the heat transfer of an impinging laminar flame jet[J]. International Journal of Heat and Mass Transfer, 2007, 50(13-14):2816-2827. doi: 10.1016/j.ijheatmasstransfer.2006.10.053
[4]	Chander S, Ray A. Flame impingement heat transfer:A review[J]. Energy Conversion and Management, 2005, 46(18):2803-2837. http://d.old.wanfangdata.com.cn/NSTLQK/NSTL_QKJJ0210526622/
[5]	徐惊雷, 徐忠, 肖敏, 等.冲击射流的研究概述[J].力学与实践, 1999, 21(6):8-17. http://d.old.wanfangdata.com.cn/Periodical/hkgyjs200602015 Xu J L, Xu Z, Xiao M, et al. On impinging jet research[J]. Mechanics in Engineering, 1999, 21(6):8-17. http://d.old.wanfangdata.com.cn/Periodical/hkgyjs200602015
[6]	Zuckerman N, Lior N. Jet impingement heat transfer:physics, correlations, and numerical modeling[J]. Advances in Heat Transfer, 2006, 39(06):565-631. http://d.old.wanfangdata.com.cn/NSTLHY/NSTL_HYCC0212758683/
[7]	过增元.场协同原理与强化传热新技术[M].北京:中国电力出版社, 2004. Guo Z Y. Field synergy principle and enhanced heat transfer technology[M]. Beijing:China Electric Power Press, 2004.
[8]	张建辉, 尹航, 陈永辰.冲击射流预混火焰的数值模拟[J].能源研究与信息, 2011, 27(1):38-45. doi: 10.3969/j.issn.1008-8857.2011.01.007 Zhang J H, Dai R, Chen Y C. Numerical simulation of the impinging-jet premixed flame[J]. Energy Research and Information, 2011, 27(1):38-45. doi: 10.3969/j.issn.1008-8857.2011.01.007
[9]	陈庆光, 徐忠, 张永建.湍流冲击射流流动与传热的数值研究进展[J].力学进展, 2002, 32(1):92-108. doi: 10.3321/j.issn:1000-0992.2002.01.008 Chen Q G, Xu Z, Zhang Y J. Advances in numerical studies of turbulent impinging jet flow and heat transfer[J]. Advances in Mechanics, 2002, 32(1):92-108. doi: 10.3321/j.issn:1000-0992.2002.01.008
[10]	苑达, 王丙兴, 王昭东, 等.单喷嘴冲击射流的数值模拟[J].中国冶金, 2014, 24(增刊):222-226. http://d.old.wanfangdata.com.cn/Conference/8507565 Yuan D, Wang B X, Wang Z D, et al. Numerical simulation of single nozzle jet for ultra-fast cooling[J]. China Metallurgy, 2014, 24(s):222-226. http://d.old.wanfangdata.com.cn/Conference/8507565
[11]	徐惊雷, 徐忠, 张堃元, 等.雷诺数对半封闭紊流冲击射流流场影响的实验研究[J].南京航空航天大学学报, 2001, 33(2):187-190. doi: 10.3969/j.issn.1005-2615.2001.02.020 Xu J L, Xu Z, Zhang K Y, et al. Experimental study of Reynolds number effect on turbulent impinging jet flow[J]. Journal of Nanjing University of Aeronautics and Astronautics, 2001, 33(2):187-190. doi: 10.3969/j.issn.1005-2615.2001.02.020
[12]	熊霏, 姚朝晖, 郝鹏飞, 等.冲击射流的PIV实验研究[J].流体力学实验与测量, 2004, 18(3):68-72. doi: 10.3969/j.issn.1672-9897.2004.03.015 Xiong F, Yao Z H, Hao P F, et al. PIV investigation of impinging jet[J]. Experiments and Measurements in Fluid Mechanics. 2004, 18(3):68-72. doi: 10.3969/j.issn.1672-9897.2004.03.015
[13]	陈庆光, 徐忠, 吴玉林, 等.矩形管湍流冲击射流场的PIV实验研究[J].实验流体力学, 2005, 19(1):87-93. doi: 10.3969/j.issn.1672-9897.2005.01.018 Chen Q G, Xu Z, Wu Y L, et al. Experimental study on rectangular turbulent impinging jet flow field by PIV technique[J]. Journal of Experiments in Fluid Mechanics, 2005, 19(1):87-93. doi: 10.3969/j.issn.1672-9897.2005.01.018
[14]	姚朝晖, 侯修洲, 郝鹏飞.超声速冲击射流的PIV实验研究[J].实验流体力学, 2007, 21(4):32-35. doi: 10.3969/j.issn.1672-9897.2007.04.007 Yao Z H, Hou X Z, Hao P F. PIV experimental research on supersonic impinging jet[J]. Journal of Experiments in Fluid Mechanics, 2007, 21(4):32-35. doi: 10.3969/j.issn.1672-9897.2007.04.007
[15]	Milson A, Chigier N A. Studies of methane and methane-air flames impinging on a cold plate[J]. Combustion and Flame, 1973, 21(3):295-305. doi: 10.1016/S0010-2180(73)80052-5
[16]	Van der Meer T H. Stagnation point heat transfer from turbulent low reynolds number jets and flame jets[J]. Experimental Thermal and Fluid Science, 1991, 4(1):115-126. doi: 10.1016/0894-1777(91)90025-M
[17]	Chander S, Ray A. Experimental and numerical study on the occurrence of off-stagnation peak in heat flux for laminar methane/air flame impinging on a flat surface[J]. International Journal of Heat and Mass Transfer, 2011, 54(5-6):1179-1186. doi: 10.1016/j.ijheatmasstransfer.2010.10.035
[18]	Li H B, Zhen H S, Leung C W. Effects of plate temperature on heat transfer and emissions of impinging flames[J]. International Journal of Heat and Mass Transfer, 2010, 53(19-20):4176-4184. doi: 10.1016/j.ijheatmasstransfer.2010.05.040
[19]	Li H B, Zhen H S, Leung C W. Nozzle effect on heat transfer and CO emission of impinging premixed flames[J]. International Journal of Heat and Mass Transfer, 2011, 54(1-3):625-635. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=4877613a160a185d70cda5dceb4cbda4
[20]	O'Donovan T S, Murray D B. Jet impingement heat transfer-Part Ⅰ:Mean and root-mean-square heat transfer and velocity distributions[J]. International Journal of Heat and Mass Transfer, 2007, 50(17-18):3291-3301. doi: 10.1016/j.ijheatmasstransfer.2007.01.044
[21]	O'Donovan T S, Murray D B. Jet impingement heat transfer-Part Ⅱ:A temporal investigation of heat transfer and local fluid velocities[J]. International Journal of Heat and Mass Transfer, 2007, 50(17-18):3302-3314. doi: 10.1016/j.ijheatmasstransfer.2007.01.047
[22]	Goldstein R J, Timmers J F. Visualization of heat transfer from arrays of impinging jets[J]. International Journal of Heat and Mass Transfer, 1982, 25(12):1857-1868. doi: 10.1016/0017-9310(82)90108-9
[23]	O'Donovan T S. Fluid flow and heat transfer of an impinging air jet[D]. Dublin, Ireland: University of Dublin, 2005.
[24]	Chen Y C, Peters N, Schneemann G A, et al. The detailed flame structure of highly stretched turbulent premixed methane-air flames[J]. Combustion and Flame, 1996, 107(3):223-244. doi: 10.1016/S0010-2180(96)00070-3
[25]	Zhou B, Brackmann C, Li Q, Wang Z, et al. Distributed reactions in highly turbulent premixed methane/air flames. Part Ⅰ. Flame structure characterization[J]. Combustion and Flame, 2014, 162(7):2937-2953. http://cn.bing.com/academic/profile?id=39e810f42f703acd8e3b650a6c7e69d9&encoded=0&v=paper_preview&mkt=zh-cn
[26]	陆嘉, 廖光煊, 陶常法.甲烷射流扩散火焰结构试验研究[J].安全与环境学报, 2010, 10(6):164-168. doi: 10.3969/j.issn.1009-6094.2010.06.038 Lu J, Liao G X, Tao C F, Experimental study of flame shape of methane jet diffusion flame[J]. Journal of Safety and Environment, 2010, 10(6):164-168. doi: 10.3969/j.issn.1009-6094.2010.06.038
[27]	Dong L L, Cheung C S, Leung C W. Heat transfer characteristics of an impinging inverse diffusion flame jet-Part Ⅰ:Free flame structure[J]. International Journal of Heat and Mass Transfer, 2007, 50(25-26):5108-5123. doi: 10.1016/j.ijheatmasstransfer.2007.07.018
[28]	Dong L L, Cheung C S, Leung C W. Heat transfer characteristics of an impinging inverse diffusion flame jet-Part Ⅱ:Impinging flame structure and impingement heat transfer[J]. International Journal of Heat and Mass Transfer, 2007, 50(25-26):5124-5138. doi: 10.1016/j.ijheatmasstransfer.2007.07.017
[29]	Buresti G, Talamelli A, Petagna P. Experimental characterization of the velocity field of a coaxial jet configuration[J]. Expe-rimental Thermal and Fluid Science, 1994, 9(2):135-146. doi: 10.1016/0894-1777(94)90106-6
[30]	令狐昌鸿, 王高峰, 钟亮, 等.旋流流化床固体粒子发生器: 中国, 201610646669.7[P]. 2016-11-23. Linhu C H, Wang G F, Zhong L, et al. Swirling fluidized bed solid particle generator: China, 201610646669.7[P]. 2016-11-23.
[31]	沈熊.激光测速技术(LDV)诞生50周年启示[J].实验流体力学, 2014, 28(6):51-55. http://www.syltlx.com/CN/abstract/abstract10789.shtml Shen X. A historical review for the 50th anniversary of laser doppler velocimetry[J]. Journal of Experiments in Fluid Mechanics, 2014, 28(6):51-55. http://www.syltlx.com/CN/abstract/abstract10789.shtml
[32]	费业泰.误差理论与数据处理[M].第7版.北京:机械工业出版社, 2015. Fei Y T. Error theory and data processing[M]. 7th ed. Beijing:China Machine Press, 2015.