Unified low-parametrical equation used to calculate the viscosity coefficient of argon

被引：3

作者：

Kaplun, A. B. ^{[1
]}

Meshalkin, A. B. ^{[1
]}

Dutova, O. S. ^{[1
]}

机构：

[1] Kutateladze Inst Thermophys SB RAS, Novosibirsk, Russia

来源：

THERMOPHYSICS AND AEROMECHANICS | 2017年 / 24卷 / 02期

关键词：

viscosity; density; temperature; pressure; gas; liquid; equation of state; argon; OF-STATE; SUBSTANCES; LIQUIDS;

D O I：

10.1134/S0869864317020056

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Using the previously obtained dependence of excess viscosity on internal energy density and low-parametric unified equation of state for calculation of thermodynamic properties of liquid, gas, and fluid, the equation for the excess viscosity of argon in the range of the "mixed" mechanism of momentum transfer in the shear flow was derived. Different versions of approximation of excess viscosity dependence on the density of interaction energy were compared, and the optimal version of this dependence was determined. A simple unified low-parametric equation was obtained for describing the coefficient of argon viscosity in a wide range of state parameters. It is shown that the proposed low-parametric equation for calculating the viscosity coefficient of liquid and gas allows reliable extrapolation beyond the studied region.

引用

页码：203 / 212

页数：10

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