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Name
Authors
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2019/3
Principles of optimization of operation of gas-distributing unit taking into account non-stationary processes
Technical sciences

Authors: Alexander F. MAKSIMENKO graduated from Gubkin University majoring in Applied Mathematics in 1976. He is Doctor of Technical Sciences, Professor of the Department of Theoretical Mechanics of Gubkin Russian State University of Oil and Gas (National Research University). He is specialist in the field of research of processes in oil and gas reservoirs effected by underground explosions; industrial safety systems after use of explosive technologies in oil and gas fields. He is author of more than 75 scientific publications. E-mail: maf@gubkin.ru
Alexander S. KUZNECHIKOV graduated from Gubkin Russian State University of Oil and Gas in 2001. He is senior lecturer of Gubkin Russian State University of Oil and Gas (National Research University) and specialist in the field of shock wave processes in pipeline systems, standardization and quality management systems. He is author of more than 25 scientific publications.
E-mail: kas@gubkin.ru

Abstract: Оne of basic elements of the gas transmission system of Russia are compressor stations which allow to provide the required volumes of transportation of gas and uninterrupted supply of natural gas to consumers. At the same time every start or shutdown of gas-distributing units at compressor stations, fluctuation in gas consumption, change of temperature and hydraulic operating modes, etc. lead to changes of the operating mode of all elements of the gas pipeline. Therefore, the problem of optimization of operating modes of gas-distributing units is very relevant

Index UDK: 622.691; 533.6

Keywords: gas transmission system, gas transport, gas-distributing unit, system, natural gas

Bibliography:
1. Loitsyansky L.G. Mechanics of fluid and gas. M.: Nauka, 1991, 847 p.
2. Kuznechikov A.S., Maksimenko A.F. Use of methods of the asymptotic theory for calculation of intensity of the shock wave in pipeline systems Pipeline Transport. Theory and Practice, 2018, no. 1, p. 27-29 (in Russian).
3. Kuznechikov A.S., Maksimenko A.F. Analysis of basic options for design schemes for natural gas discharge and utilization systems (for gas-main pipelines). Oil, Gas and Business, 2008, no. 10, p. 55-60 (in Russian).
4. Kuznechikov A.S., Maksimenko A.F. Determination of the intensity of the shock wave as a function of the parameters of the initial state of the gas mixture (with forced discharge of a high-pressure fluid from the process pipeline). Oil, Gas and Business, 2009, no. 1, p. 65-67 (in Russian).
5. Kuznechikov A.S., Maksimenko A.F. Basic calculation relationships for determining the intensity of the shock wave (in pipeline branches for a one-dimensional design scheme of the shock-wave process). Oil, Gas and Business, 2009, no. 3, p. 57-58 (in Russian).
6. Kuznechikov A.S., Maksimenko A.F. Analysis of calculation formulas for the limiting stage of the forced natural gas discharge process. Gazovaya promyshlennost, august 2011, p. 48-50 (in Russian).
7. Kuznechikov A.S., Maksimenko A.F. Analysis of the influence of the degree of opening of the launching device’s channel on the intensity of the shock wave when a high-pressure gas is discharged from a high-pressure apparatus of a large volume. Oil, Gas and Business, 2012, no. 1-2, p. 106-109 (in Russian).
8. Kuznechikov A.S., Maksimenko A.F. The use of single-channel schemes for the calculation of a shock wave that has passed from a discharge pipeline to a collection manifold. Gazovaya promyshlennost, april 2013, p. 44-46 (in Russian).

2013/2
The study of nonlinear waves propagation in dispersed hydrocarbon medium
Design, manufacturing and operation of oil and gas sector equipment and facilities

Authors: Alexander F. MAKSIMENKO was born 1954. He graduated from Gubkin Moscow Institute of Petrochemical and Gas Industry in 1976 specializing in “Applied Mathematics”. He is Doctor of Technical Sciences, Professor of the Department of Theoretical Mechanics at Gubkin Russian State University of Oil and Gas. He is author of more than 75 scientific works, including 3 monographs. E-mail: maf@gubkin.ru

Abstract: An equilibrium model describing the propagation of the shock wave through the reacting condensed hydrocarbon medium is constructed. To determine the equilibrium parameters of the condensed hydrocarbon mixture the system of nonlinear equations is numerically solved, includig the thermal equation of state and the generalized law of mass action. The studies carried out using the proposed model are consistent with experimental data. The model allows to assess the degree of conversion of condensed dispersed hydrocarbon compounds during the shock wave at first approximation. It is necessary to know the functions of the standard affinity reactions in this matter, and its coefficient of thermal expansion. A more accurate and detailed analysis of the propagation of the shock wave through the condensed hydrocarbon compounds requires determining their thermal equation of state, as well as building a more correct mathematical model based on the principles of non-equilibrium thermodynamics.

Index UDK: 538.95, 544.272, 519.6

Keywords: condensed matter, equilibrium conversion, generalized law of mass action, function of standard affinity, thermal equation of state, shock wave, Mach number

Bibliography:
1. Kurant G., Fridrikhs K. Sverkhzvukovoe techenie i udarnye volny: Per. s angl. M.: Izd. inost. lit., 1950, 426 р.
2. Mekhanika reagiruyushchikh sred i ee prilozheniya. Sbornik nauchnykh trudov. AN SSSR SO ITPM. Novosibirsk: Nauka, 1989, 280 р.
3. Nigmatulin R.I. Osnovy mekhaniki geterogennykh sred. M.: Nauka, 1978, 336 р.
4. Prigozhin I., Defey R. Khimicheskaya termodinamika: Per. s angl. Novosibirsk: Nauka, 1966, 509 р.
5. Sou Shao Le. Gidrodinamika mnogofaznykh sistem: Per. s angl. M.: Mir, 1971, 367 р.
6. Fizika vzryva. F.A. Baum, L.P. Orlenko, K.P. Stanyukovich i dr. M.: Nauka, 1975, 704 р.
7. Oran Elaine S., Boris Jay P. New directions in computing reacting flows. Comput. and Struct, 1988. V. 30, nо. 1–2, рр. 69–77.