卞永宁

个人信息Personal Information

教授

硕士生导师

性别:男

毕业院校:山口大学

学位:博士

所在单位:力学与航空航天学院

学科:流体力学. 化学工程

办公地点:大连本部 力学楼510

盘锦校区 D07-306B

联系方式:1.大连理工大学运载工程与力学学部力学系流体力学研究室 2.大连理工大学盘锦校区海洋科学与技术学院 Mobile:18641136292 Office: 0411-84707330 Home: 0411-84748119

电子邮箱:ybian@dlut.edu.cn

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The drag reduction effects of a non-Newtonian fluid (CMC aqueous solution) in a sinusoidal wavy-walled tube at moderate Reynolds numbers for steady flow

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论文类型:会议论文

发表时间:2015-01-01

收录刊物:CPCI-S

卷号:27

页面范围:359-362

关键字:Drag reduction; CMC aqueous solution; rheological parameters

摘要:The drag reduction effects of a non-Newtonian fluid (CMC aqueous solution with 50-1000wppm) in a sinusoidal wavy-walled tube were investigated experimentally in the Reynolds numbers range from 25 to 360. Based on the pressure drop method, drag reduction was measured and the maximum drag reduction achieved was 38% using 700wppm. It was found that in the end of the laminar flow region the CMC polymer solutions display more distinct drag reduction than that in turbulent flow region. Besides, the effect of rheological parameters on drag reduction has been discussed.