Transient Simulations of the Fluid–Structure Interaction Response of a Partially Confined Pipe Under Axial Flows in Opposite Directions

Abstract

This paper presents a numerical study of the dynamic response and stability of a partially confined cantilever pipe under simultaneous internal and external axial flows in opposite directions. The onset of flow-induced vibrations is predicted by the developed numerical model, and moreover, limit-cycle motion occurs as the flow speed becomes larger than a critical value. The numerical results are in good agreement with existing experimental results. The simulation gives control over many physical parameters and provides a better insight into the dynamics of the pipe. A parametric study regarding the stability of the system for varying confinement length is performed. The current results show that there is an increase in the susceptibility of the system to instability as the extent of confinement is increased.

Mathematical modeling in problems about dynamics and stability of elastic elements of wing profiles

“…However, in recent years, most of the works have been devoted to the study of the stability of pipeline systems and cylindrical shells interacting with a liquid or gas flow. Among the latter, we note the works [Abdelbaki et al, 2019;Blinkov et al, 2018;Butt et al, 2021;Chehreghani et al, 2021;Kheiri and Paidoussis, 2015;Kontzialis et al, 2017;Moditis et al, 2016;Mogilevich et al, 2017;Mogilevich et al, 2018;Mogilevich and Ivanov, 2020;Moshkelgosha et al, 2017] and many others. Among the works of the authors of this article on the study of the dynamics, stability and controllability of pipeline systems, we note the works [Gladun and Velmisov and Ankilov, 2016;Velmisov and Ankilov, 2017;Velmisov and Ankilov, 2018;Velmisov and Ankilov, 2019;Velmisov and Ankilov, 2021].…”

Investigation on Water Hammer Control of Centrifugal Pumps in Water Supply Pipeline Systems

“…In this study, the simulation was conducted by programming in FORTRAN based on MOC and the boundary conditions of the involved devices. To simulate a transient process, there are a lot of numerical methods, including the Finite Difference Method (FDM) [33] and the Finite Element Method (FEM) [34,35]. The FDM method of characteristics (MOC) is one of the most widely used methods recently, because of its convenience and accuracy.…”

About dynamic stability of deformable elements of vibration systems

“…Many experimental and theoretical studies have been devoted to stability analysis of elastic bodies interacting with gas and liquid. Among them we should note [Abdelbaki et al, 2019;Blinkov et al, 2018;Kheiri and Paidoussis, 2015;Kontzialis et al, 2017;Moditis et al, 2016;Mogilevich et al, 2017;Mogilevich et al, 2018;Moshkelgosha et al, 2017;Zvyagin and Gur'ev, 2017] and many others. Among the works of the authors of this article about fluid-structure interaction, note the monograph and articles [Ankilov and Velmisov, 2013;Ankilov and Velmisov, 2016;Velmisov and Ankilov, 2017;.…”