Universal drag reduction characteristics of saline water-soluble poly(ethylene oxide) in a rotating disk apparatus

被引：22

作者：

Choi, HJ ^{[1
]}

Kim, CA

Sung, JH

Kim, CB

Chun, W

Jhon, MS

机构：

[1] Inha Univ, Dept Polymer Sci & Engn, Inchon 402751, South Korea

[2] Inha Univ, Dept Mech Engn, Inchon 402751, South Korea

[3] Cheju Natl Univ, Dept Nucl & Energy Engn, Cheju 690756, South Korea

[4] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA

来源：

COLLOID AND POLYMER SCIENCE | 2000年 / 278卷 / 07期

关键词：

drag reduction; poly(ethylene oxide); hydrodynamic volume; ocean thermal energy conversion; rotating disk flow; turbulence;

D O I：

10.1007/s003960000328

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polymer-induced turbulent drag reduction in a rotating disk apparatus was investigated using nonionic poly(ethylene oxide) (PEO) in a synthetic saline solution with novel application to ocean thermal energy conversion technology. A maximum total (skin friction plus form) drag reduction of 30% was obtained with 50 wppm of PEO with molecular weight 5.0 x 10(6). The concentration dependence of the percentage drag reduction for the PEO/saline solution system is found to fit Virk's empirical correlation, and a universal correlation for various molecular weights and Reynolds numbers is also presented. Furthermore, hydrodynamic volume fraction was introduced to correlate drag reduction efficiency with molecular parameters in this PEO/saline solution system.

引用

页码：701 / 705

页数：5

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