管道表面润湿性对层流流动阻力的影响  

Experimental research on the effect of pipe surface wettability on flow resistance in laminar flow

作　　者：敬加强[1,2] 齐红媛[1] 梁爱国[3] 史建英[3] 蒋华义[4] 张亦翔 王玉龙[4,5] 孙娜娜[4] JING Jiaqiang;QI Hongyuan;LIANG Aiguo;SHI Jianying;JIANG Huayi;ZHANG Yixiang;WANG Yulong;SUN Nana(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,Sichuan,China;Oil & Gas Fire protection Key Laboratory of Sichuan Province,Chengdu 611731,Sichuan,China;No.1 Production Plant of Xinjiang Oilfield Branch Company,Karamay 834000,Xinjiang,China;College of Petroleum Engineering,Xi’an Shiyou University,Xi’an 710065,Shaanxi,China;Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education,School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an,710049,Shaanxi,China)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]油气消防四川省重点实验室,四川成都611731 [3]新疆油田采油一厂,新疆克拉玛依834000 [4]西安石油大学石油工程学院,陕西西安710065 [5]西安交通大学能源与动力工程学院,热流科学与工程教育部重点实验室,陕西西安710049

出　　处：《化工进展》2017年第9期3203-3209,共7页Chemical Industry and Engineering Progress

基　　金：国家科技重大专项项目(2016ZX05025-004)

摘　　要：基于建立的小型循环管路实验平台,实验研究了自来水、乙二醇和26#白油分别在304不锈钢管、有机玻璃管、聚丙烯管(PP管)和聚四氟乙烯管(PTFE管)内层流流动的阻力特性。通过测量不同流量下的压降,计算得到了摩阻系数和泊肃叶数随雷诺数的变化关系以及相同雷诺数下摩阻系数随接触角的变化关系,同时采用接触角测定仪分别测量了3种液体在4种管道表面的接触角,讨论了管道表面润湿性对流动阻力的影响规律。实验结果均表明,管道表面润湿性对流动阻力产生了一定的影响:在相同雷诺数下,随着液体在管道表面接触角的增大,液体的泊肃叶数和摩阻系数均呈现减小的趋势;疏液管道表面润湿性对摩阻系数的影响大于亲液管道,并且在雷诺数较小时这种现象表现得更加明显。Flow characteristics of tap water,ethylene glycol and26#white oil in304stainless steel pipe,plexiglass pipe,polypropylene pipe(PP pipe)and polytetrafluoroethylene pipe(PTFE pipe)were experimentally studied based on experimental platform of small circulation line.Measurements were made for pressure drops under different flow rates.The relationships of frictional coefficient versus Reynolds number,Poiseuille number versus Reynolds number and contact angle versus frictional coefficient for three liquids flowing in four pipes were figured out respectively.Together with the contact angle measurement by the contact angle meter,the effect of pipe surface wettability on frictional coefficient was discussed.The results all showed that surface wettability of pipe has certain influence on the flow resistance.The frictional coefficient and Poiseuille number decrease with the increase of contact angle at the same Reynolds number.The effect of lyophobic pipe surface wettability on frictional coefficient is greater than that of lyophilic pipe and the phenomenon is more obvious for the smaller Reynolds numbers.

关 键 词：润湿性 接触角 层流 摩阻系数 流体力学 流动 

分 类 号：O357.1[理学—流体力学]