Unified low-parametrical equation used to calculate the viscosity coefficient of argon
- Authors: Kaplun A.B.1, Meshalkin A.B.1, Dutova O.S.1
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Affiliations:
- Kutateladze Institute of Thermophysics SB RAS
- Issue: Vol 24, No 2 (2017)
- Pages: 203-212
- Section: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/216915
- DOI: https://doi.org/10.1134/S0869864317020056
- ID: 216915
Cite item
Abstract
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.
Keywords
About the authors
A. B. Kaplun
Kutateladze Institute of Thermophysics SB RAS
Author for correspondence.
Email: kaplun@itp.nsc.ru
Russian Federation, Novosibirsk
A. B. Meshalkin
Kutateladze Institute of Thermophysics SB RAS
Email: kaplun@itp.nsc.ru
Russian Federation, Novosibirsk
O. S. Dutova
Kutateladze Institute of Thermophysics SB RAS
Email: kaplun@itp.nsc.ru
Russian Federation, Novosibirsk