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, … 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 ...
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WebWEAVER D S, GROVER L K. Cross-flow induced vibrations in a tube bank-turbulent buffeting and fluid elastic instability[J]. Journal of Sound and Vibration,1978,59(2): 277-294. AUSTERMANN R, POPP K. Stability behaviour of a single flexible cylinder in rigid tube arrays of different geometry subjected to cross-flow[J]. WebDec 17, 2015 · The cross-flow induced vibrations in water of a single flexible tube in a normal square array of rigid tubes are investigated by means of large-eddy simulations, based on the classical Smagorinsky ...
WebJan 5, 2024 · The flow-induced vibration in finned tube heat exchangers is affected by various parameters such as fin height, fin pitch, fin material, tube array, pitch ratio, fin type, fluid velocity etc. ... In this paper, an experimental investigation of fluid elastic instability in shell and tube heat exchangers is carried out by subjecting normal square ... 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 …
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 … WebOct 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.
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 …
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 … dalian hepat chroma solar technology co. ltdWebIt 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. dalian high-level talent innovation programWebMay 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 … bip forecastWebJan 29, 2004 · We report an elastic instability associated with flow-induced clustering in semidilute non-Brownian colloidal nanotubes. Rheo-optical measurements are compared with simulations of mechanical flocculation in sheared fiber suspensions, and the evolving structure is characterized as a function of confinement and shear stress. The transient … dalian hexing investment coWeb• Successfully simulated and studied tube failure, including analyzing effects of different geometric and fluid parameters on multiple heat-exchanger tube array designs to study flow induced vibrations. • Researched existing literature regarding fluid elastic instability and vortex induced vibrations occurring in heat-exchangers. dalian hengtai foods co. ltdWebAbstract. 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 … bip foreign investmentsWebFlow-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 bip for autism