КОМП’ЮТЕРНЕ МОДЕЛЮВАННЯ ПОВЕДІНКИ СИСТЕМИ ТРУБОПРОВІД–РІДИНА, ДОСЛІДЖЕННЯ І ОЦІНКА ВПЛИВУ СИЛ КОРІОЛІСА НА РУХ РІДИНИ У ТРУБОПРОВОДІ ПРИ РІЗНИХ СПОСОБАХ ЗАКРІПЛЕННЯ

• Datum: 2025
• Hauptverfasser: Gavrilenko, V.V., Lymarchenko, O.S., Kovalchuk, O.P.
• Format: Artikel
• Sprache: English
• Veröffentlicht: V.M. Glushkov Institute of Cybernetics of NAS of Ukraine 2025
• Schlagworte: трубопровід з рідиною; що рухається; нелінійні коливання системи; різні способи закріплення трубопроводу; нелінійні механізми; сили Коріоліса; перерозподіл енергії між формами коливань системи
• Online Zugang: https://jais.net.ua/index.php/files/article/view/653
• Назва журналу: Problems of Control and Informatics

One of the most important tasks of science and technology is the study of the behavior of pipelines under transition fluid flow regimes in the vicinity of critical velocities of the fluid. Particular attention is paid to the behavior of the system while its approaching the critical flow velocities, when there is a loss of stability of the rectilinear form of the pipeline. This can lead to the destruction of the pipeline. Therefore, in view of the high cost of such objects and the possible negative consequences in case of pipeline destruction, the question arises about the development of effective methods of mathematical modeling of the pipeline system — a liquid in the linear and nonlinear ranges of changes in the parameters of the system. The problem of dynamics of pipe with a flowing fluid is considered. Vibrations of the system in the nonlinear range of disturbances are investigated. An investigation of the influence of nonlinear mechanisms and Coriolis forces on the redistribution of the energy between forms of vibrations of the system is given. Coriolis forces dominate in the redistribution of the energy between forms of vibrations of the system. A total influence of Coriolis forces and nonlinear mechanisms in case of the availability of a free edge is most revealed. The developed model is sufficiently universal and can be applied to study many application problems of pipeline dynamics in transitional modes of motion. Important results are the analysis of the influence and nature of various nonlinear mechanisms, the study of different fluid flow regimes, and the possibility of applying the flow law to damping the oscillations.