不同截面疏水性微肋阵内减阻特性

doi:10.11949/j.issn.0438-1157.20150890

化工学报 ›› 2016, Vol. 67 ›› Issue (4): 1258-1268.DOI: 10.11949/j.issn.0438-1157.20150890

不同截面疏水性微肋阵内减阻特性

姜桂林, 管宁, 张承武, 刘志刚

山东省科学院能源研究所, 山东济南 250014

收稿日期:2015-06-10 修回日期:2015-08-04 出版日期:2016-04-05 发布日期:2016-04-05
通讯作者: 刘志刚
基金资助:
国家自然科学基金项目(51176105);山东省自然科学基金项目(ZR2012EEQ015);山东省科技发展计划项目(2014GGX104008)。

Characteristics of drag reduction in different cross sections of hydrophobic micro pin fins

JIANG Guilin, GUAN Ning, ZHANG Chengwu, LIU Zhigang

Energy Research Institute of Shandong Academy of Sciences, Jinan 250014, Shandong, China

Received:2015-06-10 Revised:2015-08-04 Online:2016-04-05 Published:2016-04-05
Supported by:
supported by the National Natural Science Foundation of China (51176105), the Natural Science Foundation of Shandong Province (ZR2012EEQ015) and the Shandong Province Science and Technology Development Plans (2014GGX104008).

摘要/Abstract

摘要：

采用疏水液处理紫铜微肋阵表面,分别在截面为圆形、菱形和椭圆形微肋阵实验段内形成接触角分别为99.5°、119.5°和151.5°(水为工质)的疏水性表面,实验测试各个工况下流道内流动阻力和压力降,分析了不同截面形状对疏水性微肋阵内减阻特性的影响规律。结果表明,当接触角增大时,压力降变化率在微肋阵内的变化规律随截面形状的改变而发生变化;同一接触角下,椭圆形微肋阵内压力降变化率随流量增加而逐渐减小,而菱形和圆形微肋阵则先减小后保持常数。相同Reynolds数(Re)下,3种截面实验段中减阻率均随接触角的增大而增加。接触角相同时,椭圆形微肋阵内阻力系数变化因子随Re的增大而逐渐减小;菱形和圆形则先减小后保持常数,接触角为151.5°时最小阻力系数变化因子分别为50.81%和58.68%。

关键词: 疏水性微肋阵, 接触角, 摩擦阻力系数, 压力降, 减阻率

Abstract:

The hydrophobic coatings with different properties are coated on the surfaces of micro pin fins with different cross sections of circular, diamond and elliptical to obtain hydrophobic micro pin fins with contact angles of 99.5°, 119.5° and 151.5°, respectively. The reduction coefficient of the pressure drop and the friction resistance are measured experimentally when water flows through the hydrophobic micro pin fins at different flow rates. Experimental results show that the change rate of pressure drop in ellipse and diamond micro pin fins increases gradually, however the change rate of pressure drop in circular micro pin fins increases at first and then decreases when the contact angle changes from 83° (the red copper smooth surface) to 151.5°. With the increase of the flow rate, the change rate of pressure drop in ellipse micro pin fins gradually decreases, while it decreases at first and then almost keeps constant in diamond and circular micro pin fins. The investigation also illustrates that the resistance reduction rates in all of test sections become large with the increase of the contact angle at the same Re. Under the same contact angle conditions, the resistance reduction rate gradually decreases in elliptical micro pin fins with the increase of Re, while it decreases at first and then keeps almost constant in diamond shaped and circular test sections. The minimal resistance reduction rates in diamond shaped and circular micro pin fins are 50.81% and 58.68% at contact angle of 151.5°, respectively.

Key words: hydrophobic micro pin fins, contact angel, friction resistance coefficient, pressure drop, resistance reduction rate

中图分类号:

TK124

姜桂林, 管宁, 张承武, 刘志刚. 不同截面疏水性微肋阵内减阻特性[J]. 化工学报, 2016, 67(4): 1258-1268.

JIANG Guilin, GUAN Ning, ZHANG Chengwu, LIU Zhigang. Characteristics of drag reduction in different cross sections of hydrophobic micro pin fins[J]. CIESC Journal, 2016, 67(4): 1258-1268.

参考文献 27

[1]	KOSAR A, MISHRA C, PELES Y. Laminar flow across a bank of low aspect ratio micro pin fins[J]. Journal of Fluids Engineering, 2005, 127(3): 419-430.
[2]	MOORES K A, KIM J, JOSHI Y K. Heat transfer and fluid flow in shrouded pin fin arrays with and without tip clearance[J]. Int. J.Heat Mass Transfer, 2009, 52: 5978-5989.
[3]	NDAO S, PELES Y, JENSEN M K. Effects of pin shape and configuration on the single-phase heat transfer characteristics of jet impingement on micro pin fins[J]. Int. J. Heat Mass Transfer, 2014, 70: 856-863.
[4]	SHENOY S, TULLIUS J F, BAYAZITOGLU Y. Minichannels with carbon nanotube structured surfaces for cooling applications[J]. Int. J. Heat Mass Transfer, 2011, 54(25/26): 5379-5385.
[5]	BAUDRY J, CHARIAIX E, TONCK A, et al. Experimental evidence for a large slip effect at a nonwetting fluid-solid interface[J]. Langmuir, 2001, 17(17): 5232-5236.
[6]	CHOI C H, JOHAN K, WESTIN A, et al. Apparent slip flows in hydrophilic and hydrophobic microchannels[J]. Physics of Fluids, 2003, 15(10): 2897-2902.
[7]	WANG C Y, NG C. Natural convection in a vertical slit microchannel with superhydrophobic slip and temperature jump[J]. J. Heat Transfer, 2014, 136: 034502.1-034502.6.
[8]	MOHAMMAD N N, SETAREH S, ALIREZA M. Drag reduction in a turbulent channel flow with hydrophobic wall[J]. Journal of Hydrodynamics, 2012, 24(3): 458-466.
[9]	PELES Y, KOSAR A, MISHRA C, et al. Forced convective heat transfer across a pin fin micro heat sink[J]. Int. J. Heat Mass Transf., 2005, 48: 3615-3627.
[10]	KOSAR A, MISHRA C, PELES Y. Laminar flow across a bank of low aspect ratio micro pin fins[J]. J. Fluids Eng., 2005, 127(3): 419-430.
[11]	KOSAR A, PELES Y. Thermal-hydraulic performance of memes-based pin fin heat sink[J]. J. Heat Transf., 2006, 128: 121-131.
[12]	MUSTAFA K, MEHMED R O, KOSAR A. Parametric study on the effect of end walls on heat transfer and fluid flow across a micro pin-fin[J]. Int. J. Therm. Sci., 2011, 50(6): 1073-1084.
[13]	CHANG S W, HU Y-W. Endwall thermal of performances of radially rotating rectangular channel with pin-fins on skewed rib lands[J]. Int. J. Heat Mass Transf., 2014, 69: 173-190.
[14]	刘志刚, 张承武, 管宁. 叉排微柱群内顶部缝隙对传热效率的影响[J]. 化工学报, 2012, 63(4):1025-1031. DOI:10.3969/j.issn.0438-1157. 2012.04.005. LIU Z G, ZHANG C W, GUAN N. Influence of tip clearance on heat transfer efficiency in staggered micro-cylinders-group[J]. CIESC Journal, 2012, 63(4):1025-1031. DOI:10.3969/j.issn.0438-1157. 2012.04.005.
[15]	SELVARASU N K C, TAFTI D K, BLACKWELL N E. Effect of pin density on heat-mass transfer and fluid flow at low Reynolds numbers in minichannels[J]. J. Heat Transfer, 2010, 132: 061702.1-061702.8.
[16]	张承武, 蒲龙梅, 姜桂林, 等. 不同截面形状微肋片内流动阻力特征[J]. 化工学报, 2014, 65(6): 2042-2048. DOI: 10.3969/j.issn.0438-1157. 2014.06.013. ZHANG C W, PU L M, JIANG G L, et al. Resistance characteristics of micro pin fins with different cross-section shapes[J]. CIESC Journal, 2014, 65(6): 2042-2048. DOI: 10.3969/j.issn.0438-1157. 2014.06.013.
[17]	董丽宁, 全晓军, 郑平. 微针肋阵列通道中水的层流摩擦系数的模拟[J]. 上海交通大学学报, 2010, 44(11): 1561-1565. DONG L N, QUAN X J, ZHENG P. Numerical simulation for friction factor of laminar flow of water in microchannels with micro-pin-fin arrays[J]. Journal of Shanghai Jiao Tong University, 2010, 44(11): 1561-1565.
[18]	MOHAMMAD M M, KOK-CHEONG W, MANSOOR S. Numerical investigation of fluid flow and heat transfer under high heat flux using rectangular micro-channels[J]. Int. J. Comm. Heat Mass Transfer, 2012, 39: 291-297.
[19]	OU J, BLAIR P, ROTHSTEIN J P. Laminar drag reduction in microchannels using ultrahydrophobic surfaces[J]. Physics of Fluids, 2004, 16(12): 4635-4643.
[20]	SONG D, DANIELLO R J, ROTHSTEIN J P. Drag reduction using superhydrophobic sanded Teflon surfaces[J]. Exp. Fluids, 2014, 55: 1783.
[21]	宋善鹏, 于志家, 刘兴华, 等. 超疏水表面微通道内水的传热特征[J]. 化工学报, 2008, 59(10): 2465-2469. SONG S P, YU Z J, LIU X H, et al. Heat transfer characteristics of water flowing in microchannels with super-hydrophobic inner surface[J]. Journal of Chemical Industry and Engineering (China), 2008, 59(10): 2465-2469.
[22]	LI B W, YAO Z H, HAO P F. Incompressible LBGK simulation of flow characteristics in a micro-channel with patterned superhydrophobic surfaces[J]. Applied Mathematical Modelling, 2015, 39: 300-308.
[23]	霍素斌, 于志家, 李艳峰, 等. 超疏水表面微通道内水的流动特征[J]. 化工学报, 2007, 58(11): 2721-2726. HUO S B, YU Z J, LI Y F, et al. Flow characteristics of water in microchannel with super-hydrophobic surface[J]. Journal of Chemical Industry and Engineering (China), 2007, 58(11): 2721-2726.
[24]	QIAN B T, SHEN Z Q. Fabrication of superhydrophobic surface by dislocation-selective chemical on aluminum, copper and zinc substrate[J]. Langmuir, 2005, 21(3): 9007-9009.
[25]	姜桂林, 张承武, 管宁, 等. 水在不同接触角微柱群内的流动特征[J]. 化工学报, 2015, 66(5): 1704-1709. DOI: 10.11949/j.issn. 0438-1157.20141799 JIANG G L, ZHANG C W, GUAN N, et al. Flow characteristics of water on hydrophobic micro cylinders group with different contact angle[J]. CIESC Journal, 2015, 66(5): 1704-1709. DOI: 10.11949/j.issn. 0438-1157.20141799
[26]	MOFFAT R J. Describing the uncertainties in experimental results[J]. Exp. Thermal Fluid Sci., 1988, 1(1): 3-17.
[27]	ZUKAUSKAS A A. Heat transfer from tubes in cross flow[J]. Advances in Heat Transfer, 1972, 8: 93-160.

不同截面疏水性微肋阵内减阻特性

Characteristics of drag reduction in different cross sections of hydrophobic micro pin fins

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 27

相关文章 15

编辑推荐

Metrics

本文评价

[1]	王敏, 程金兰, 李鑫, 陆晶晶, 尹崇鑫, 戴红旗. 酸性助水溶剂脱除木质素机理分析[J]. 化工学报, 2022, 73(5): 2206-2221.
[2]	常楚鑫, 徐黎婷, 殷嘉伦, 雒先, 贾洪伟. 浸没状态下的低压电润湿行为研究[J]. 化工学报, 2022, 73(4): 1673-1682.
[3]	周通, 陈晶晶, 涂春朝, 吉晓燕, 陆小华, 王昌松. 管道内多巴胺超疏水涂层的制备[J]. 化工学报, 2021, 72(7): 3814-3822.
[4]	吴延鹏, 赵薇, 陈凤君. 不同相对湿度下亲疏水纳米纤维膜空气过滤性能实验研究[J]. 化工学报, 2020, 71(S1): 471-478.
[5]	沈逸, 张泽宇, 梁益涛, 黄永华, 耑锐, 张亮, 卜劭华. 磁补偿微重力环境实现及磁流体微重力内角流动研究[J]. 化工学报, 2020, 71(8): 3490-3499.
[6]	梁杰, 李玉星, 刘翠伟, 朱建鲁, 王少雄, 刘纳. 埋地输气管道泄漏特性实验研究[J]. 化工学报, 2019, 70(4): 1635-1643.
[7]	祝及龙, 石万元. 平面上固定接触角蒸发液滴内Marangoni对流失稳现象[J]. 化工学报, 2018, 69(S1): 53-57.
[8]	高明, 孔鹏, 章立新. 恒热流条件下亲疏水表面液滴蒸发特性[J]. 化工学报, 2018, 69(7): 2979-2984.
[9]	魏晓阳, 王利民, 邓磊, 车得福. CC板通道入口效应对传热特性和阻力特性的影响[J]. 化工学报, 2017, 68(11): 4061-4068.
[10]	祝叶, 管宁, 李栋, 赵孝保, 刘志刚. 不同截面形状超疏水微肋阵内对流换热特性[J]. 化工学报, 2017, 68(1): 63-71.
[11]	唐海达, 张涛, 刘晓华, 江亿. 辐射吊顶表面冷凝液滴脱落尺寸分析[J]. 化工学报, 2016, 67(9): 3552-3558.
[12]	庄大伟, 杨艺菲, 胡海涛, 丁国良. 竖直平板间液桥形状的观测与预测模型开发[J]. 化工学报, 2016, 67(6): 2224-2229.
[13]	于明志, 范雪晶, 胡爱娟. 颗粒堆积型多孔介质内部液体形态实验研究及机理分析[J]. 化工学报, 2015, 66(7): 2450-2455.
[14]	邱德来, 管宁, 张承武, 赵孝保, 刘志刚. 加热功率对三角形微肋阵内流动与对流换热特性的影响[J]. 化工学报, 2015, 66(6): 2062-2069.
[15]	姜桂林, 张承武, 管宁, 邱德来, 刘志刚. 水在不同接触角微柱群内的流动特征[J]. 化工学报, 2015, 66(5): 1704-1709.