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Journal of Automation and Information Sciences

Publication de 12  numéros par an

ISSN Imprimer: 1064-2315

ISSN En ligne: 2163-9337

SJR: 0.173 SNIP: 0.588 CiteScore™:: 2

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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

Volume 51, Numéro 5, 2019, pp. 30-37
DOI: 10.1615/JAutomatInfScien.v51.i5.30
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RÉSUMÉ

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.

RÉFÉRENCES
  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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