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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Automation and Information Sciences
SJR: 0.238 SNIP: 0.464 CiteScore™: 0.27

ISSN Печать: 1064-2315
ISSN Онлайн: 2163-9337

Выпуски:
Том 51, 2019 Том 50, 2018 Том 49, 2017 Том 48, 2016 Том 47, 2015 Том 46, 2014 Том 45, 2013 Том 44, 2012 Том 43, 2011 Том 42, 2010 Том 41, 2009 Том 40, 2008 Том 39, 2007 Том 38, 2006 Том 37, 2005 Том 36, 2004 Том 35, 2003 Том 34, 2002 Том 33, 2001 Том 32, 2000 Том 31, 1999 Том 30, 1998 Том 29, 1997 Том 28, 1996

Journal of Automation and Information Sciences

DOI: 10.1615/JAutomatInfScien.v51.i5.30
pages 30-37

Computer Modeling of the System Pipeline-Liquid Behavior. Research and Estimate of the Effect of the Coriolis Forces on Liquid Motion in Pipeline for Different Ways of Fixing

Valeriy V. Gavrilenko
National Transport University, Kiev
Oleg S. Limarchenko
Kiev National University, Kiev
Oxana P. Kovalchuk
National Transport University, Kiev

Краткое описание

One of the most important problems of science and technology is the study of the behavior of pipelines under transient liquid flow modes in vicinity of critical velocities of the fluid. Particular attention is paid to the behavior of the system on approaching the critical flow velocities when the loss of stability of the rectilinear shape of the pipeline occurs. This can lead to the destruction of the pipeline. Therefore, from the point of view of high costs of such objects and potential negative consequences in case of pipeline destruction, the question about the development of effective methods of mathematical modeling of the pipeline — liquid in the linear and nonlinear ranges of the system parameters arises. The problem of dynamics of pipe with a flowing fluid is considered. Vibrations of the system in the nonlinear range of disturbances are studied. For different ways of pipeline fixation, we perform the analysis of the effect of nonlinear mechanisms and the Coriolis forces on the redistribution of the energy between normal modes of the system oscillations. It is shown that according to their contribution the Coriolis forces dominate in the redistribution of the energy between normal modes of oscillations of the system. It is noted that under the presence of a free edge an integral effect of the Coriolis forces and nonlinear mechanisms is manifested maximally. The developed model is sufficiently universal and can be applied to study many application problems of pipeline dynamics in transient modes of motion. Important results are the analysis of the effect and nature of various nonlinear mechanisms, the study of different fluid flow modes, and the potential to use the flow law for damping oscillations.

ЛИТЕРАТУРА

  1. Kovalchuk O.P., Nonlinear dynamics of pipeline with high-speed liquid flowing for different ways of fixation, Vestnik natsionalnogo transportnogo universiteta, 2015, 31, 242-245.

  2. Babakov I.M., Theory of oscillations [inRussian], Nauka, Moscow, 1968.

  3. Gavrilenko V.V., Limarchenko O.S., Kovalchuk O.P., Model of nonlinear dynamics of pipeline with high-speed liquid flow for different ways of fixation, Vestnik natsionalnogo transportnogo universiteta, Part. 2,2011, 24, 278-281.

  4. Gavrilenko V.V., Kovalchuk O.P., Limarchenko O.S., Character of force interaction of the pipeline with movable liquid for high-speed motion of liquid, Problemy transporta, 2012, 9, 249-252.

  5. Vasilevskiy Yu.E., Limarchemko O.S., Kovalchuk O.P., Mechanism of the loss of nonlinear stability of a pipeline for high-speed liquid flowing, Kommunalnoe khozyaistvo gorodov, 2010, 91, 49-56.

  6. BondarN.G., Nonlinear autonomous problems of mechanics of elastic systems [in Russian], Budivelnyk, Kiev, 1971.

  7. Kilchevskiy N. A., Course of theoretical mechanics, 2 [in Russian], Nauka, Moscow, 1977.

  8. Mikhlin S.G., Variational methods in mathematical physics [in Russian], Nauka, Moscow, 1970.


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