Flow-induced instability of an elastic tube
WebIt is well known that the Poiseuille flow of a visco-elastic polymer fluid between plates or through a tube is linearly stable in the zero Reynolds number limit, although the stability is weak for large Weissenberg numbers (Wi). ... Keywords:Nonlinear;Instability;Visco-elastic. Correspondingauthor.Tel.:+31-71-5275501;fax:+31-71-5275511. WebOct 1, 2024 · Flow-induced vibration is known to be caused by four mechanisms: turbulent buffeting, vortex shedding, fluid elastic instability (FEI), and acoustic resonance [1]. ... and studied the effect of single elastic tube and multiple elastic tubes on flow-induced vibration in a rigid tube array. The results showed that FEI is more likely to occur when ...
Flow-induced instability of an elastic tube
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WebFlow-induced vibration (FIV) can be characterized by 4 different excitation mechanisms including fluid elastic instability (FEI), vortex shedding, turbulent buffeting, and acoustic resonance. Turbulent buffeting and vortex shedding may cause a slight damage in tube bundles due to flow-induced vibrations over an extended amount of time or they WebMay 1, 2000 · @misc{etde_20341140, title = {Flow induced vibration analysis of SMART steam generator tubes : fluid elastic instability, turbulence induced vibration, tube inside vibration} author = {Kim, Y W, Kim, J H, Park, J S, Kim, J I, and Sim, W G} abstractNote = {Once - through helical steam generator, with design concepts quite different from the …
Web摘要： The flow-induced vibration of a plate-type beam structure with "pinned-spring" support is studied in this paper. Adopting the assumption of a viscous, incompressible two-dimensional flow, the partial differential equations of the structure are set up, and the Galerkin method and the Fourth-order Rung-Kutta method are employed to solve the … WebSep 9, 2024 · According to the needs generated by the industry, there is an urgent need to investigate the flow vibration response law of the elastic tube bundle of heat exchangers subjected to the coupling effect of shell and tube domain at different inlet flow velocities. In this paper, based on the continuity equation, momentum equation, turbulence model, …
WebFeb 13, 2024 · The cross-flow over a surface-mounted elastic plate and its vibratory response are studied as a fundamental two-dimensional configuration to gain physical insight into the interaction of viscous flow with flexible structures. The governing equations are numerically solved on a deforming mesh using an arbitrary Lagrangian-Eulerian finite … WebFeb 13, 2024 · The cross-flow over a surface-mounted elastic plate and its vibratory response are studied as a fundamental two-dimensional configuration to gain physical insight into the interaction of viscous flow with flexible structures. The governing equations are numerically solved on a deforming mesh using an arbitrary Lagrangian-Eulerian finite …
WebJan 1, 2006 · Abstract. Fluid-elastic instability in an air-water two-phase cross-flow has been experimentally investigated using two different arrays of straight tube bundles: normal square (NS) array and ...
WebJan 1, 2001 · When a tube bundle is subject to cross-flow with increasing velocity, it will come to a point at which the responses of the tubes suddenly rapidly increase without bound, until tube-to-tube impacting or other non-linear effects limit the tube motions. This phenomenon is known as fluid-elastic instability. reinstall windows 10 download free upgradeWebA mathematical model for flow-induced vibrations in heat exchanger tube banks is presented which includes the effects of vortex shedding, fluidelastic coupling, drag force, and fluid inertia coupling. Once the fluid forces are known, the model can predict the details of complex tube-fluid interactions: (1) natural frequencies and mode shapes of ... reinstall windows 10 bricked computerWebDOI: 10.1016/j.jfluidstructs.2024.103870 Corpus ID: 257866705; Fluidelastic instability of a rod bundle subjected to jet cross-flow @article{GadelHak2024FluidelasticIO, title={Fluidelastic instability of a rod bundle subjected to jet cross-flow}, author={Ibrahim Gad-el-Hak and Njuki Mureithi and Kostas Karazis}, journal={Journal of Fluids and … reinstall windows 10 firewallWebOct 6, 2024 · Kumaran, V., Fredrickson, G.H. & Pincus, P. 1994 Flow induced instability of the interface between a fluid and a gel at low Reynolds number. J. Phys. ... White, J. & Heil, M. 2005 Three-dimensional instabilities of liquid-lined elastic tubes: a thin-film fluid-structure interaction model. Phys. Fluids 17, 031506. reinstall windows 10 driveWebNov 1, 2005 · The study of flow-induced vibration excitation forces on tubes is necessary for understanding the fluid-elastic instability phenomenon. In this paper, a forced vibration method is introduced to investigate unsteady motion-dependent fluid forces in a normal triangular tube array with the pitch ratio of 1.32 that is subjected to water crossflow. prodigy t-shirtsWebAug 11, 2024 · According to the analysis of fluid elastic instability, Liu and others put forward a new instability model based on other people’s research and pointed out that the improved model has the advantages of … prodigy twin turboWebSep 9, 2024 · According to the needs generated by the industry, there is an urgent need to investigate the flow vibration response law of the elastic tube bundle of heat exchangers subjected to the coupling effect of shell and tube domain at different inlet flow velocities. In this paper, based on the continuity equation, momentum equation, turbulence model, … prodigy tw face down pillow