Modeling the rheology of polymer solutions by dissipative particle dynamics

被引：28
|
作者：
Kong, Y. [1 ]
Manke, C. W. [1 ]
Madden, W. G. [1 ]
Schlijper, A. G. [2 ]
机构：
[1] Wayne State Univ, Dept Chem Engn & Mat Sci, Detroit, MI 48202 USA
[2] Shell Res & Technol Ctr Thornton, Chester CH1 3SH, Cheshire, England
来源：
TRIBOLOGY LETTERS | 1997年 / 3卷 / 01期
关键词：
computer simulation; polymer solutions; polymer solution rheology; dissipative particle dynamics (DPD);
D O I：
10.1023/A:1019196014223
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Dissipative particle dynamics (DPD), a new simulation technique that focuses on intermediate time and length scales, is evaluated for systems in which polymers are used as viscosity index improvers. Model studies of simple non-Newtonian fluids show that DPD reveals the expected shear thinning. DPD solutions confined between solid surfaces, predict anisotropic conformational relaxation dynamics. In addition, the effects of thermodynamic solvent quality on the configurations and rheological behavior of dissolved polymers, essential to the performance of multigrade lubricants, are represented by the DPD model.
引用
收藏
页码：133 / 138
页数：6
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