Article 7118

Title of the article

THE PROCESS OF CHANGING THE SUPERCOMPRESSIBILITY COEFFICIENT OF A GAS ON SECTIONS OF THE GAS PIPELINE

Authors

Shtykov Roman Aleksandrovich, candidate of technical sciences, associate professor, sub-department of physics and applied mathematics, Murom Institute of Vladimir State University (602264, 23 Orlovskaya street, Murom, Russia), ipmrroman@yandex.ru

Index UDK

681.324

DOI

10.21685/2307-4205-2018-1-7

Abstract

Background. One of the problems that arise when solving the problems of analyzing the functioning of elementary sections of the main gas pipeline (MG) is to determine the value of the gas supercompressibility coefficient, which is included in the mathematical models of pipeline gas transport for calculating the main characteristics of the gas pipeline.
Materials and methods. There are various empirical formulas for determining the coefficient of supercompressibility. However, the above formulas do not take full account of the factors. In some, the change in the coefficient of supercompressibility as a function of pressure is taken into account, in others, on the temperature, and sometimes also on the chemical composition of the gas mixture. Developing research in this direction, the article proposes new numericalanalytical calculation methods for solving three different problems for single- and multi-threaded MH when the pipeline is grouped according to hydraulic parameters.
Results. Simple analytical formulas for determination of mass flow, pressure and coefficient of supercompressibility coefficient are obtained. But the distribution of the mass flow of gas between parallel threads with a variable  coefficient of gas supercompressibility occurs as it was in the case of a constant value of the gas supercompressibility coefficient. The difference is in determining the input and output pressure values, i.e. when solving transcendental equations. Conclusions. As the results in computational experiments show, the accuracy of calculations increases to three percent or more.

Key words

gas pipeline, gas, parameters, pipe, flow

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Дата создания: 14.05.2018 14:09
Дата обновления: 14.05.2018 15:50