典型文献
The effective hydrodynamic radius in the Stokes-Einstein relation is not a constant
文献摘要：
Variants based on the assumption of effective hydrodynamic radius being a constant are usually adopted to test the Stokes-Einstein(SE)relation.The rationality of the assumption is examined by performing molecular dynamics simulations with the truncated Lennard-Jones-like(TLJ)model,Kob-Andersen model and ortho-terphenyl(OTP)model.The results indicate the assumption is generally not established except for special case.The effective hydrodynamic radius is observed to increase with decreasing temperature for TLJ model but is decreased for Kob-Andersen and OTP model;and which is almost a constant for TLJ particle with enough rigidity.The variant of SE relation D～T/ηis invalid for the three models except for the TLJ particle with enough rigidity.We propose similar inconsistency may be also existed in other liquids and the assumption should be critically evaluated when adopted to test the SE relation.
文献关键词：
中图分类号：
作者姓名：
Gan Ren
作者机构：
School of Science,Civil Aviation Flight University of China,Guanghan 618307,China
文献出处：
引用格式：
[1]Gan Ren-.The effective hydrodynamic radius in the Stokes-Einstein relation is not a constant)[J].理论物理,2022(09):173-178
A类：
TLJ,Kob
B类：
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AB值：
0.496231
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