Analysis of fluid across a single cylinder and two parallel cylinders in a micro flow channel by micro-PIV

doi:10.16085/j.issn.1000-6613.2022-1512

Abstract

Abstract:

The micro particle image velocimetry (micro-PIV) technique was used to study the flow field characteristics of single and parallel double micro-cylindrical bypass flow in microchannels. The effect of Re on the velocity field, vortex intensity, vortex angle and vortex dimensionless length was analyzed by observing the single and parallel double micro-cylindrical bypass flow fields at different Reynolds numbers (Re). The experimental study revealed that the vortex formation and shedding of cylindrical winding flow at the micro-nano scale had a certain hysteresis compared with that of cylindrical winding flow at the macroscopic scale. The hysteresis of parallel double micro-cylinders was larger than that of single micro-cylinders. The length and width of the vortex increase with increasing Re, and the vortex volume band extended further downstream of the microcylinder. The vortex angle and the dimensionless length of the vortex also increased with Re. The parallel double microcylinder I vortex structure was deformed and showed a drum shape. Affected by the mainstream region, the vortex structure was squeezed and showed a band vortex, while the position of the focal point was shifted toward the direction of the horizontal line of the center of the two cylinders. With the increasing of Re, the dimensionless vortex length and vortex angle showed an overall increasing trend.

Key words: microscale, microfluidics, microchannels, fluid mechanics

摘要：

采用微观粒子图像测速（micro-PIV）技术对微通道内单微圆柱和并联双微圆柱绕流流场特性进行研究，通过对不同雷诺数（Re）下单微圆柱和并联双微圆柱绕流流场的观测，分析Re对速度场、涡量强度、相位角和涡的量纲为1长度的影响规律。通过实验研究发现：微纳尺度下圆柱绕流的漩涡形成和脱落相比于宏观尺度下圆柱绕流具有一定的迟滞性。并联双微圆柱的迟滞性大于单个微圆柱。随着Re的增加，漩涡的长度和宽度随着增加，涡量带向微圆柱下游方向延伸得更远。相位角和漩涡的量纲为1长度随之增加。并联双微圆柱漩涡结构发生变形，呈现鼓状。受到主流区的影响，漩涡的结构受到挤压，呈带状漩涡，同时，焦点的位置向两圆柱中心水平线的方向偏移。随着Re的不断变大，量纲为1涡长和相位角整体呈上升趋势，并联双微圆柱中，受到两微圆柱之间主流区的影响，上微圆柱的相位角整体大于下微圆柱。

关键词: 微尺度, 微流体学, 微通道, 流体力学

CLC Number:

TAO Mengqi, LIU Meihong, KANG Yuchi. Analysis of fluid across a single cylinder and two parallel cylinders in a micro flow channel by micro-PIV[J]. Chemical Industry and Engineering Progress, 2023, 42(6): 2836-2844.

陶梦琦, 刘美红, 康宇驰. 基于micro-PIV的微通道内流体绕流单微圆柱和并联双微圆柱流场特性[J]. 化工进展, 2023, 42(6): 2836-2844.

Figures/Tables 14

References 27

1	谢远成, 欧中红. 电子设备散热技术的发展[J]. 舰船电子工程, 2019, 39(8): 14-18.
	XIE Yuancheng, Zhonghong OU. Development of heat dissipation technology for electronic equipment[J]. Ship Electronic Engineering, 2019, 39(8): 14-18.
2	TULLIUS J F, TULLIUS T K, BAYAZITOGLU Y. Optimization of short micro pin fins in minichannels[J]. International Journal of Heat and Mass Transfer, 2012, 55(15/16): 3921-3932.
3	梅响, 姚元鹏, 吴慧英. 连通微通道内过冷流动沸腾传热强化机理分析[J]. 化工进展, 2022, 41(6): 2884-2892.
	MEI Xiang, YAO Yuanpeng, WU Huiying. Analysis of heat transfer enhancement mechanism on subcooled flow boiling in interconnected microchannels[J]. Chemical Industry and Engineering Progress, 2022, 41(6): 2884-2892.
4	许浩榕, 孙欢, 朱宏伟, 等. 纵向肋间距对微针肋散热器流动传热特性影响的模拟研究[J]. 冷藏技术, 2022, 45(2): 43-51.
	XU Haorong, SUN Huan, ZHU Hongwei, et al. Simulation study on the effect of vertical pin spacing on thermal-hydraulic characteristics of micro-pin-fin heat sinks[J]. Journal of Refrigeration Technology, 2022, 45(2): 43-51.
5	PELES Yoav, Ali KOŞAR, MISHRA Chandan, et al. Forced convective heat transfer across a pin fin micro heat sink[J]. International Journal of Heat and Mass Transfer, 2005, 48(17): 3615-3627.
6	刘东, 舒宇, 何蔚然, 等. 微针肋槽道内去离子水换热特性[J]. 强激光与粒子束, 2018, 30(4): 25-30.
	LIU Dong, SHU Yu, HE Weiran, et al. Heat transfer characteristics of mini pin-fin channels[J]. High Power Laser and Particle Beams, 2018, 30(4): 25-30.
7	徐迪. 不同形状微针肋流动与换热性能模拟与试验研究[D]. 南京: 南京师范大学, 2020.
	XU Di. Simulation and experimental study of flow and heat transfer performance of microneedle ribs of different shapes[D]. Nanjing: Nanjing Normal University, 2020.
8	宋虹, 黄维平, 付雪鹏. 基于模型试验和数值模拟的柔性串列圆柱体涡激振动研究[J]. 振动与冲击, 2020, 39(6): 64-73.
	SONG Hong, HUANG Weiping, FU Xuepeng. Vortex induced vibration of flexible tandem cylinders based on model tests and numerical simulations[J]. Journal of Vibration and Shock, 2020, 39(6): 64-73.
9	赵鹏, 王晓凯, 张耀. 小尺寸低质量比的并联圆柱涡激振动仿真研究[J]. 石油机械, 2022, 50(6): 50-57.
	ZHAO Peng, WANG Xiaokai, ZHANG Yao. Simulation study on vortex-induced vibration of small-sized side-by-side cylinders with low mass ratio[J]. China Petroleum Machinery, 2022, 50(6): 50-57.
10	刘志刚, 吕明明, 孔令健, 等. 基于Micro-PIV的不同截面形状微柱群内部流场特性研究[J]. 山东科学, 2019, 32(5): 81-87.
	LIU Zhigang, Mingming LYU, KONG Lingjian, et al. Study on flow field in micro-cylinder groups with different cross-section shapes by micro-PIV method[J]. Shandong Science, 2019, 32(5): 81-87.
11	QIN Luwen, HUA Junye, ZHAO Xiaobao, et al. Micro-PIV and numerical study on influence of vortex on flow and heat transfer performance in micro arrays[J]. Applied Thermal Engineering, 2019, 161: 114186.
12	王乐, 翁建华. 微柱群流动及换热研究进展[J]. 化工进展, 2020, 39(11): 4330-4341.
	WANG Le, WENG Jianhua. Research progress of flow and heat transfer in micro-pin-fins[J]. Chemical Industry and Engineering Progress, 2020, 39(11): 4330-4341.
13	马超. 不同排列方式的微柱群通道内流动的Micro-PIV研究[D]. 北京: 华北电力大学, 2021.
	MA Chao. Micro-PIV study of flow in micro-column channels with different arrangements[D]. Beijing: North China Electric Power University, 2021.
14	XIA Guodong, CHEN Zhuo, CHENG Lixin, et al. Micro-PIV visualization and numerical simulation of flow and heat transfer in three micro pin-fin heat sinks[J]. International Journal of Thermal Sciences, 2017, 119: 9-23.
15	刘志刚, 董开明, 吕明明, 等. 基于微观粒子图像测速法的微肋阵通道内流场特性研究[J]. 化工学报, 2021, 72(10): 5094-5101.
	LIU Zhigang, DONG Kaiming, Mingming LYU, et al. Study on characteristics of flow field in micro pin fin array based on micro-PIV[J]. CIESC Journal, 2021, 72(10): 5094-5101.
16	LIU Z G, GUAN N, ZHANG C W, et al. The flow resistance and heat transfer characteristics of micro pin-fins with different cross-sectional shapes[J]. Nanoscale and Microscale Thermophysical Engineering, 2015, 19(3): 221-243.
17	YANG Dawei, WANG Yan, DING Guifu, et al. Numerical and experimental analysis of cooling performance of single-phase array microchannel heat sinks with different pin-fin configurations[J]. Applied Thermal Engineering, 2017, 112: 1547-1556.
18	AMBREEN T, KIM M H. Effect of fin shape on the thermal performance of nanofluid-cooled micro pin-fin heat sinks[J]. International Journal of Heat and Mass Transfer, 2018, 126: 245-256.
19	XU Fayao, PAN Zhenhai, WU Huiying. Experimental investigation on the flow transition in different pin-fin arranged microchannels[J]. Microfluidics and Nanofluidics, 2018, 22(1): 1-13.
20	刘中春, 侯吉瑞, 岳湘安. 微尺度流动界面现象及其流动边界条件分析[J]. 水动力学研究与进展(A辑), 2006, 21(3): 339-346.
	LIU Zhongchun, HOU Jirui, YUE Xiangan. Interfacial phenomena in micro-scale flowing and its flowing boundary condition[J]. Journal of Hydrodynamics(Ser. A), 2006, 21(3): 339-346.
21	孙江龙, 吕续舰, 郭磊, 等. 微尺度流动研究的简要综述[J]. 机械强度, 2010, 32(3): 502-508.
	SUN Jianglong, Xujian LYU, GUO Lei, et al. Brief summarization of micro-scale flow research[J]. Journal of Mechanical Strength, 2010, 32(3): 502-508.
22	MEIS M, VARAS F, VELÁZQUEZ A, et al. Heat transfer enhancement in micro-channels caused by vortex promoters[J]. International Journal of Heat and Mass Transfer, 2010, 53(1/2/3): 29-40.
23	JUNG J, KUO C J, PELES Y, et al. The flow field around a micropillar confined in a microchannel[J]. International Journal of Heat and Fluid Flow, 2012, 36: 118-132.
24	季璨, 吕明明, 黄继凯, 等. 微通道内单柱绕流特性的实验研究[J]. 工程热物理学报, 2021, 42(7): 1844-1850.
	JI Can, Mingming LYU, HUANG Jikai, et al. Experimental study on flow around a single pin fin in a microchannel[J]. Journal of Engineering Thermophysics, 2021, 42(7): 1844-1850.
25	李济超, 季璨, 吕明明, 等. 微通道内单柱绕流特性的Micro-PIV实验研究[J]. 化工学报, 2020, 71(4): 1844-1850.
	LI Jichao, JI Can, Mingming LYU, et al. Experimental study on characteristics of flow around single cylinder in microchannel based on micro-PIV[J]. CIESC Journal, 2020, 71(4): 1844-1850.
26	张立. 小雷诺数下圆柱绕流的数值模拟[J]. 力学季刊, 2010, 31(4): 543-547.
	ZHANG Li. Numerical simulation of flow around circular cylinder with small Reynolds numbers[J]. Chinese Quarterly of Mechanics, 2010, 31(4): 543-547.
27	凌杰, 王毅. 小雷诺数下圆柱绕流数值模拟[J]. 机械工程与自动化, 2019(2): 87-88, 91.
	LING Jie, WANG Yi. Numerical simulation of circular flow around a cylinder at small Reynolds number[J]. Mechanical Engineering & Automation, 2019(2): 87-88, 91.

Q/μL·min^-1	A/mm²	U_t /m·s^-1	Re
5000	0.6	0.139	55
6000		0.167	67
7000		0.194	78
8000		0.222	89
9000		0.250	100
10000		0.278	111

Q/μL·min^-1	A/mm²	U_t /m·s^-1	Re
5000	0.6	0.139	55
6000		0.167	67
7000		0.194	78
8000		0.222	89
9000		0.250	100
10000		0.278	111

[1]	ZHAO Chen, MIAO Tianze, ZHANG Chaoyang, HONG Fangjun, WANG Dahai. Heat transfer characteristics of ethylene glycol aqueous solution in slit channel under negative pressure [J]. Chemical Industry and Engineering Progress, 2023, 42(S1): 148-157.
[2]	LI Chunli, HAN Xiaoguang, LIU Jiapeng, WANG Yatao, WANG Chenxi, WANG Honghai, PENG Sheng. Research progress of liquid distributors in packed columns [J]. Chemical Industry and Engineering Progress, 2023, 42(9): 4479-4495.
[3]	CHEN Weiyang, SONG Xin, YIN Yaran, ZHANG Xianming, ZHU Chunying, FU Taotao, MA Youguang. Effect of liquid viscosity on bubble interface in the rectangular microchannel [J]. Chemical Industry and Engineering Progress, 2023, 42(7): 3468-3477.
[4]	YU Junnan, YU Jianfeng, CHENG Yang, QI Yibo, HUA Chunjian, JIANG Yi. Performance prediction of variable-width microfluidic concentration gradient chips by deep learning [J]. Chemical Industry and Engineering Progress, 2023, 42(7): 3383-3393.
[5]	WU Xia, JIANG Xuntao, ZHANG Yuxiao, LYU Huiyuan, HUANG Fang, YU Xiaoxi. Protein crystallization research based on droplet microfluidics [J]. Chemical Industry and Engineering Progress, 2023, 42(4): 2024-2030.
[6]	TIAN Qikai, ZHENG Haiping, ZHANG Shaobin, ZHANG Jing, YU Ziyi. Advances in mixing enhanced microfluidic channels [J]. Chemical Industry and Engineering Progress, 2023, 42(4): 1677-1687.
[7]	LUO Xiaoping, FAN Peng, ZHOU Jianyang, WANG Mengyuan. Boiling curve and onset of nucleate boiling of microchannels with corrugated walls [J]. Chemical Industry and Engineering Progress, 2023, 42(3): 1228-1239.
[8]	ZHANG Meng, LI Shuqian, ZHANG Dong, MA Kunru. Motion characteristics for vapor-liquid interfaces of direct contact condensation in a microchannel [J]. Chemical Industry and Engineering Progress, 2022, 41(9): 4644-4652.
[9]	MAO Jijin, ZHANG Donghui, SUN Lili, LEI Qinhui, QU Jian. Boiling heat transfer and resistance characteristics of two types of sintered structures [J]. Chemical Industry and Engineering Progress, 2022, 41(7): 3483-3492.
[10]	MEI Xiang, YAO Yuanpeng, WU Huiying. Analysis of heat transfer enhancement mechanism on subcooled flow boiling in interconnected microchannels [J]. Chemical Industry and Engineering Progress, 2022, 41(6): 2884-2892.
[11]	WANG Long, LIU Yongfeng, BI Guijun, SONG Jin’ou. Characteristics of diesel combustion under CO₂/O₂ atmosphere by quantum chemistry calculations [J]. Chemical Industry and Engineering Progress, 2022, 41(6): 2948-2958.
[12]	ZHANG Yan, WANG Wei, XIE Rui, JU Xiaojie, LIU Zhuang, CHU Liangyin. Controllable fabrication of polymeric microparticles loaded with enzyme@ZIF-8 [J]. Chemical Industry and Engineering Progress, 2022, 41(4): 2022-2028.
[13]	TAN Wei, WANG Zhongchen, FAN Xiantao, TANG Bowen. Cross-flow vibration characteristics of parallel towers and non-smooth surface vibration reduction [J]. Chemical Industry and Engineering Progress, 2022, 41(4): 1750-1758.
[14]	LUO Mingyun, LING Ziye, FANG Xiaoming, ZHANG Zhengguo. Research progress of battery thermal management system based on phase change heat storage technology [J]. Chemical Industry and Engineering Progress, 2022, 41(3): 1594-1607.
[15]	ZENG Cheng, LU Wei, MENG Shida, QIN Rishuai. Thermal-transpiration-effect-based carbon dioxide separation system for flue gas from coal-fired power plant [J]. Chemical Industry and Engineering Progress, 2022, 41(10): 5214-5220.