化工进展2017，Vol.36Issue(9)：3203-3209,7.DOI:10.16085/j.issn.1000-6613.2017-0149
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
摘要
Abstract
Flow characteristics of tap water,ethylene glycol and 26# white oil in 304 stainless 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 angleversus 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Key words
wettability/contact angle/laminar flow/frictional coefficient/fluid mechanics/flow分类
数理科学引用本文复制引用
敬加强,齐红媛,梁爱国,史建英,蒋华义,张亦翔,王玉龙,孙娜娜..管道表面润湿性对层流流动阻力的影响[J].化工进展,2017,36(9):3203-3209,7.基金项目
国家科技重大专项项目(2016ZX05025-004). （2016ZX05025-004）
