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2014/4
Forced vibrations of gas in gathering dead leg of compressor station
Geosciences

Authors: Nikolay A. VEKLICH graduated from Lomonosov Moscow State University majoring in of „Mechanic”. Associate professor of the higher mathematics of Gubkin Russian State University of Oil and Gas. The author of 45 scientific publications.E-mail: vna4985@yandex.ru
Victor N. ZHERMOLENKO graduated from MSU majoring in of „Mechanic”. Professor of department of the higher mathematics of Gubkin Russian State University of Oil and Gas. The author of 60 scientific publications.E-mail: zhermol@yandex.ru

Abstract: Operating experience of powerful centrifugal superchargers of compressor sta-tions (CS) testifies that the CS pipelines can vibrate very intensively. One of the sources of vibrations which can reach the emergency level can be the compelled vibrations of a column of gas in the dead legs of the CS pipeline [1, 2]. The ad vancing wave of compressed gas in the dead leg of the CS pipeline is presented as a linear problem with restrictions imposed on the flow and pressure at the base of the dead leg. Estimated expressions for the force with which gas can affect the dead leg cap (bottom) are received. The conditions of rapid resonant growth of this force in time are defined. The possibility of changing the gas flow under systematic strong pressure drops at the base of the dead leg into periodic vibrations of the compressed gas is considered. The results of the work can be taken into account for fatigue calculations of welded seams in the point of welding of the dead leg to the gathering pipeline.

Index UDK: 532.552:532.527

Keywords: gathering pipeline, dead leg branch, pressure vibrations, resonance

Bibliography:
1. Ponomarenko Ju.B. Rezonansnye kolebanija gaza v sosednih kollektornyh tupikah. Sb. “Gazovoj otrasli — vysokojeffektivnoe oborudovanie”, RAO Gazprom, VNIIGAZ. M., 1995, pp. 36-39.
2. Vishnjakov V.A., Zaseckij V.G., Karavosov R.K., Prozorov A.G., Sokolinskij L.I. Vozbuzhdenie intensivnyh pul’sacij davlenija pri povorote potoka v trakte s tupikovoj polost’ju. Izv. RAN. MZhG, 1998, no. 2, pp. 104-111.
3. Chernyj G.G. Gazovaja dinamika. Ch. I. Osnovnye ponjatija gazovoj dinamiki I element prikladnoj gazovoj dinamiki. Uchebnoe posobie. Izd-vo MGU, 1984, p. 112.
4. Grinberg G.A. Novyj metod reshenija nekotoryh kraevyh zadach dlja uravnenij matematicheskoj fiziki, dopuskajushih razdelenie peremennyh. Izv. AN SSSR. Ser. fizicheskaja, 1946, t. 10, no. 2, pp. 141-168.
5. Veklich N.A. Udar cilindra iz ideal’noj szhimaemoj zhidkosti o pregradu. Sibirskij fiziko-tehnicheskij zhurnal, 1991, vyp. 6, pp. 34-41.

2012/3
Analysis of the effect of centrifugal and Coriolis forces on the transverse vibrations of the pipeline
Design, construction and operation of pipeline transport

Authors: Viktor N. ZHERMOLENKO graduated from the Mechanics and Mathematics Faculty of M.V. Lomonosov Moscow State University in 1969. He is Doctor of Physical and Mathematical Sciences, Professor of the Department of Mathematics of Gubkin Russian State University of Oil and Gas. He is an expert in the field of control theory and stability of dynamical systems, author of more than 60 scientific publications. E-mail: zhermol@yandex.ru
Evgeny A. LOPANITSYN graduated from Ordzhonikidze Moscow Aviation Institute in 1977, he is Doctor of Physical and Mathematical Sciences, Professor of the Department of Applied and Computational Mathematics of Moscow State Technical University “MAMI”. He specializes in the theory of elasticity of mechanical systems. He is author of more than 90 scientific publications. E-mail: eal54@mail.ru

Abstract: Small transverse vibrations of a straight pipeline with laminar flow of an ideal incompressible fluid simulating the vibration of a double-seat section of the pipeline are considered. We investigated the contribution to the amplitude of transverse vibrations and resonance frequency of the Coriolis force and the centrifugal force produced by a moving medium under pipe bending vibrations

Index UDK: 539.3

Keywords: straight pipe, laminar flow of an ideal incompressible fluid, small steady transverse vibrations, account of Coriolis and centrifugal forces

Bibliography:
1. Baird R.C., Bechtold J.C. Mechanical vibration of piping induced by gas-pressure pulsatione//Trans. ASME. – 1949. – V. 71. – № 8. – P. 989–995.
2. Ashley E.L., Haviland G. Bending vibration of pipeline containing flowing fluid//Journal of Applied Mechanic. – 1950, Sept. – P. 229–232.
3. Feodos'ev V.I. O kolebanijah i ustojchivosti truby pri protekanii cherez nejo zhidkosti// Inzhenernyj sbornik. – 1951. – № 10. – P. 169–170.
4. Svetlickij V.A. Mehanika truboprovodov i shlangov. – M.: Mashinostroenie. – 1982. – 280 p.
5. Ovchinnikov V.F., Smirnov L.V. Uravnenija malyh kolebanij prostranstvennogo truboprovoda s tekuwej zhidkost'ju//Prikladnye problemy prochnosti i plastichnosti. – Gor'kij, 1977. – Vyp. 7. – P. 77–84.
6. Ovchinnikov V.F., Smirnov L.V. Chislenno-analiticheskoe issledovanie gidrouprugih kolebanij konsol'nogo truboprovoda//Problemy prochnosti i plastichnosti. – N. Novgorod, 2006. – Vyp. 68. – P. 38–44.
7. Paidoussis M.P., Issid N.T. Dynamic stability of pipe conveying fluid//Journal of Sound and Vibration. – 1974. – V.30. – № 3. – P. 267–294.
8. Truboprovody porshnevyh kompressornyh mashin/A.S. Vladislavlev, A.A. Kozobkov, V.A Malyshev, A.S. Messerman, V.M. Pisarevskij. – M.: Mashinostroenie, 1972. – 288 p.
9. Kozobkov A. A., Koppel' A.I., Messerman A. S. Jelektricheskoe modelirovanie vibracij truboprovodov. – M.: Mashinostroenie, 1974. – 148 p.
10. Gershtejn M.S. Dinamika magistral'nyh truboprovodov. – M.: Nedra, 1992. – 282 p.
11. Dinamika konstrukcij gidroajerouprugih system/K.V. Frolov, N.A. Mahutov, S.M. Kaplunov i dr. – M.: Nauka, 2002. – 397 p.
12. Zefirov V.N., Kolesov V.V., Miloslavskij A.I. Issledovanie sobstvennyh chastot prjamolinejnogo truboprovoda//Izvestija RAN. Mehanika tvjordogo tela. – 1985. – № 1. – P.179–188.
13. Nesterov S.V., Akulenko L.D., Korovina L.I. Poperechnye kolebanija truboprovoda s ravnomerno dvizhuwejsja zhidkost'ju//Doklady RAN. – 2009. – V. 427. – № 6. – P. 1–4.