NDLI: Modified Eyring viscosity equation and calculation of activation energy based on the liquid quasi-lattice model

Content Provider	Springer Nature Link
Author	Han, GuangZe Fang, ZengKe Chen, MingDong
Copyright Year	2010
Abstract	Viscosity is an important physical parameter of fluid, and the Eyring viscosity equation is a popular viscosity theory. Based on the Eyring reaction rate equation and Boltzmann statistical theory, and including the probabilities of creating a hole in liquid and the transition to the neighboring hole, a modified Eyring viscosity equation was proposed. According to the structural characteristics of short-range order, liquid is treated as a quasi-lattice structure in a small region. The activation energy, which is the minimum energy needed for the molecule to jump to its neighboring hole because of the restriction of other molecules around it, was analytically calculated from an intermolecular Lennard-Jones potential function and a Stockmayer potential function. The viscosity values of 37 kinds of typical liquids at 25°C and the dependence of viscosity of three kinds of liquids on temperatures were calculated with this modified viscosity equation, and the calculated results agree with the experimental values to some extent. This work not only enriches the understanding of the mechanism of liquid viscosity, but also could provide some theoretical guides for the relevant studies and applications.
Starting Page	1853
Ending Page	1860
Page Count	8
File Format	PDF
ISSN	16747348
Journal	Science in China Series G
Volume Number	53
Issue Number	10
e-ISSN	18691927
Language	English
Publisher	SP Science China Press
Publisher Date	2010-08-31
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lennard-Jones potential Stockmayer potential transition probability activation energy Eyring viscosity equation Astronomy, Observations and Techniques Classical Continuum Physics Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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