Flow-induced instability of an elastic tube
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, … 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 …
Flow-induced instability of an elastic tube
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WebAug 3, 2024 · The study on fluid-induced vibration of helical elastic tube bundles (HETBs) to enhance heat transfer is of great significance in industrial production and energy utilization. The fluid-induced vibration response and the heat transfer property of a HETB heat exchanger were analyzed by using a two-way fluid–solid coupling method. The … WebPrediction of fluid-elastic instability onset is a great matter of importance in designing cross-flow heat exchangers from the perspective of vibration. In the present paper, the threshold of fluid-elastic instability has been numerically predicted by the simulation of incompressible, unsteady, and turbulent cross flow through a tube bundle in a normal …
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 ... 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
WebJul 28, 2016 · Failure of tubes in shell and tube exchangers is attributed to flow induced vibrations of such tubes. There are different excitations mechanisms due to which flow induced vibration occurs and among such mechanisms, fluid elastic instability is the most prominent one as it causes the most violent vibrations and may lead to rapid tube … WebSep 4, 2024 · Fluid-elastic instability of tube bundles is the main cause of vibration failure of heat exchangers. To establish more reasonable and reliable design guidelines for fluid-elastic instability of tube bundles subjected to two-phase cross flow, we investigated experimentally the effects of the flow conditions of the two-phase flow and the …
WebMay 6, 2024 · The stability of functionally graded simply supported fluid-conveying microtubes under multiple physical fields was studied in this article. The strain energy of the fluid-conveying microtubes was determined based on strain gradient theory, and the governing equation of the functionally graded, simply supported, fluid-conveying …
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 ... chip lairdWebA Review of Heat Exchanger Tube Bundle Vibrations in Two-Phase Cross-Flow grants for allotments derbyshireWebMay 1, 2024 · Fluid elastic instability is affected by different mass ratios of parallel triangular tube arrays subjected to water cross flow and streamwise flow (Tan et al., 2024; Zhang et al., 2016 ... grants for all portalWebDOI: 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 … grants for alternative heatingWebNov 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. chip lake park campgroundWebA 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 ... grants for alternative medicineWebAug 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 … grants for alzheimer\u0027s patients