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Numerical Analysis and Applications

2020 year, number 3

Equations of state in mathematical models of production and transportation natural gas

E.A. Bondarev1, A.F. Voevodin2, K.K. Argunova1, I.I. Rozhin1
1Institute of Oil and Gas Problems, Siberian Branch of Russian Academy of Sciences, Yakutsk, Russia
2М.А. Lavrentiev's Institute of Hydrodynamics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
Keywords: уравнение состояния, дросселирование, кривая инверсии, природный газ, математическое моделирование, equation of state, inverse curve, natural gas, mathematical modeling

Abstract

For one of cubic equations of state, the Redlich-Kwong, the inverse curve, which characterizes a change in a sign of the Joule-Thomson coefficient, has been constructed. The range of reduced pressure and temperature corresponds to the values intrinsic of technological changes in production and transport systems of natural gas.