This paper treats nonlinear vibration of pipes conveying fluid in the supercritical regime.If the flow speed is larger than the critical value,the straight equilibrium configuration becomesVortex-induced vibrations of pipes conveying fluid in the It is shown that when the internal fluid velocity is in the subcritical region,the pipe is always vibrating periodically around the pre-buckling configuration and that with increasing external fluid reduced velocity the peak amplitude of the pipe increases first and then decreases,with jumping phenomenon between the upper and lower response branches.Vibration around non-trivial equilibrium of a Vibration characteristics of pipes conveying fluid in the super-critical range are investigated by using Timoshenko beam theory for the first time.Generalized Hamiltonian principle is applied to derive the nonlinear transverse vibration governing equation.The non-trivial static equilibrium configuration and critical flow velocity of the pipe are analytically deduced.
The fluid-structure interaction model of the microsystem is developed based on Lagranges equations for the open system of a clamped-clamped microtube.A continuation model is used to examine the nonlinear mechanics of this microsystem prior to and beyond losing stability; the growth and the response in the supercritical regime is analysed.Supercritical vibration of nonlinear coupled moving beams Dec 01,2012 supercritical nonlinear vibration of a fluid#0183;We study supercritical frequencies of nonlinear planar vibration of moving beams.Frequencies are calculated via combining finite difference method and DFT algorithm.Numerical results are compared with those results of the Galerkin method.Nonlinearity has significant effects on nonlinear frequencies for large vibration.Supercritical dead water effect of nonlinearity and The nonlinear computations of a similar ship predict a wave train of height 1.5 m at a similar position,matching the field observation,whereas linear calculations give a wave train of height 2.3 m.Two- and three-layer theoretical models predict speeds that match the observed speeds of
Using the modal-expansion procedure,the PDDE is converted into a nonlinear delay differential equation (DDE).The fixed points (zero and buckled equilibria) of the nonlinear DDE are found,and their linear stability is analyzed.It is found that stability can be lost via either supercriticalSupercritical Water is not Hydrogen Bonded - Schienbein Recently,supercritical fluids and supercritical water (SCW) in particular have attracted enormous crossdisciplinary attention 6-9 as tunable solvent environments 8 in chemical synthesis 10 and catalytic processes.11,12 SCW is even envisaged as a mediator in nuclear power plants.13 Moreover,SCW and supercritical fluids in general Supercritical Nonlinear Vibration of a Fluid-Conveying To address the lack of researches in the aspect,the present work focuses on nonlinear forced vibration of fluid-conveying pipes in the supercritical regime.The amplitude of the external excitation is assumed at the same order of the transverse displacement.
Supercritical Nonlinear Vibration of a Fluid-Conveying Steady-state response of a fluid - Nonlinear DynamicsThe forced vibration response of the pipe conveying fluid,with 3:1 internal resonance,is studied here for the first time.The straight equilibrium configuration becomes bent while the velocity of the fluid exceeds the critical value.As a result,the original mono-stable system transforms to a bi-stable system.Critical excitation which can cause global responses is solved out from the Simulation says supercritical water has no hydrogen bonds Supercritical simulation.Quantum chemists Philipp Schienbein and Dominik Marx of the Ruhr University of Bochum have now investigated the matter from first principles,using molecular
supercritical fluid usessupercritical fluids examplessupercritical fluid technologysupercritical fluid applicationsis plasma a supercritical fluidsupercritical fluid co2supercritical fluid chromatographysupercritical fluid extractionPrevious123456NextRelated searches for supercritical nonlinear vibration of a flsupercritical fluid usessupercritical fluids examplessupercritical fluid technologysupercritical fluid applicationsis plasma a supercritical fluidsupercritical fluid co2supercritical fluid chromatographysupercritical fluid extraction12345NextSupercritical Nonlinear Vibration of a Fluid-Conveying Supercritical Nonlinear Vibration of a Fluid-Conveying Pipe Subjected to a Strong External Excitation By Yan-Lei Zhang,Hui-Rong Feng and Li-Qun Chen Get PDF (4 MB)Rayleigh-B supercritical nonlinear vibration of a fluid#233;nard convection - ScholarpediaOct 09,2012 supercritical nonlinear vibration of a fluid#0183;Rayleigh - B supercritical nonlinear vibration of a fluid#233;nard convection is a fluid flow (thermal convection) due to a non-uniform temperature distribution in a plane horizontal fluid layer heated from below.Such flows result from the development of the convective instability,if the static vertical temperature gradient (the gradient that would be present in a motionless fluid under the same conditions) is large enough.
Abstract Parametric resonances of pipes caused by pulsating fluids have received much attention.However,the main concern is the pulsation of subcritical flow.Moreover,it is usually based on the Euler-Bernoulli pipe model.This paper focuses on revealing the characteristics of parametric resonances of the Timoshenko pipe with pulsation of supercritical high-speed fluids.Parametric Resonance of Axially Accelerating Jul 17,2020 supercritical nonlinear vibration of a fluid#0183;This paper investigates the nonlinear vibration of an axially accelerating moving plate considering fluidstructure interaction.Nonlinear coupled equations of motion are derived by means of K supercritical nonlinear vibration of a fluid#225;rm supercritical nonlinear vibration of a fluid#225;n plate theory,the Galerkin method is then applied to transform the nonlinear partial differential equations into nonlinear ordinary differential equations.Numerical investigations of flow over a sphere in the Apr 05,2004 supercritical nonlinear vibration of a fluid#0183;The flow field around a sphere in an uniform flow has been analyzed numerically for conditions corresponding to the subcritical (laminar separation) and supercritical (turbulent separation) regimes spanning a wide range of Reynolds numbers (10 4 10 6).Particular attention has been devoted to assessing predictions of the pressure distribution,skin friction,and drag as well as to
Vibration problems of pipelines made of composite materials conveying pulsating flow of gas and fluid are investigated in the paper.A dynamic model of motion of pipelines conveying pulsating fluid flow supported by a Hetenyis base is developed taking into account the viscosity properties of the structure material,axial forces,internal pressure and Winklers viscoelastic base.Numerical Investigation of Rotor and Journal Bearing Jan 11,2021 supercritical nonlinear vibration of a fluid#0183;In this study,the nonlinear vibration (bifurcation type) of a highly flexible rotor supported by a journal bearing (JB) and self-aligning rolling element bearing (REB) under various configurations of rotor large disk mass/position,bearing length-to-diameter (L/D) ratio,and preload was investigated using two different bearing models the model that considers both lateral and angular motion Nonlinear vortex-induced vibration dynamics of a flexible The flow-induced vibration (FIV) responses of pipe conveying internal flow only containing a kind of fluid have been well investigated by many researchers in the last few decades.26 30 He et al.31 adopted nonlinear hydrodynamic force to describe the CF VIV responses of a fluid-conveying pipe with a top-end excitation under uniform currents.
In this paper,indirect combustion noise generated by the acceleration of entropy perturbations through a supercritical nozzle is investigated in the nonlinear regime and in the low-frequency limit (quasi-static hypothesis).This work completes the study of Huet and Giauque (Journal of Fluid Mechanics 733 (2013) 268-301) for nonlinear noise generation in nozzle flows without shock and Nonlinear frequencies and forced responses of pipes Sep 01,2019 supercritical nonlinear vibration of a fluid#0183;The four kinds of models of the nonlinear vibration of a pipe conveying fluid,namely coupled Timoshenko model,coupled Euler-Bernoulli model,and the two other transverse Timoshenko models,are established by utilizing the generalized Hamiltons principle.Nonlinear dynamics of vortex-induced vibration of a Mar 01,2021 supercritical nonlinear vibration of a fluid#0183;The vibration is quenched due to either supercritical or subcritical Hopf bifurcations for higher strength of HFE.The variations of amplitude of motion are plotted in Fig.6,Fig.7 against the strength of HF excitation q f for two different values of vortex shedding frequencies.It is observed that self-excited oscillation can be completely quenched beyond a specific value of the strength of HF
At supercritical speeds fluid converts rotor rotation energy into its transverse vibration energy resulting in instability  and .Analysis of experimental data shows that fluid in rotor cavities is often the main cause of unstable regimes  and .The underlying physics is that the fluid centrifugal acceleration isNonlinear Vibration of a Loosely Supported Curved Pipe Nonlinear Vibration of a Loosely Supported Curved Pipe Conveying Pulsating Fluid under Principal Parametric Resonance Internal resonance of pipes conveying fluid in the supercritical regime.Nonlinear Dyn.,2012,67 15051514.MathSciNet CrossRef zbMATH In-plane and out-of-plane dynamics of a curved pipe conveying pulsating fluid Nonlinear Vibration Prediction of a Highly Flexible Rotor Nonlinear Vibration Prediction of a Highly Flexible Rotor Supported by an Axial Groove Journal Bearing Considering Journal Angular Whirling Motion and supercritical bifurcation is observed in the other two cases.Finally,the experiments at the same three large disk positions are performed. Topics in Fluid Film Bearings and Rotor
Nonlinear transverse vibration of a hyperelastic beam under a harmonically varying axial load is analyzed in this work.Equations of motion of the beam are derived via the extended Hamilton's principle,where transverse vibration is coupled with longitudinal vibration.Nonlinear Torsional Vibration Analysis and Control of The nonlinear torsional vibration and instability oscillation caused by nonlinear damping in the shearer electromechanical coupling cutting transmission system in shearer driven by the permanent magnet synchronous motor (PMSM) is investigated in this paper.The electromechanical coupling transmission system in the shearer is equivalent to a concentrated mass model for the purpose of Nonlinear Parametric Vibration of the Geometrically Li,Y.D.and Yang,Y.R. Nonlinear vibration of slightly curved pipe with conveying pulsating fluid, Nonlinear Dynamics 88(4),25132529.Crossref ,ISI ,Google Scholar Liu,H.,Lv,Z.and Tang,H.[ 2019 ] Nonlinear vibration and instability of functionally graded nanopipes with initial imperfection conveying fluid
Oct 10,2019 supercritical nonlinear vibration of a fluid#0183;Abstract In this paper,the nonlinear parametric vibration of fluid-conveying pipes flexibly restrained at both ends and subjected to the pulsation flow excitation is investigated.Nonlinear Forced Vibration of Cantilevered Pipes Conveying The nonlinear forced vibrations of a cantilevered pipe conveying fluid under base excitations are explored by means of the full nonlinear equation of motion,and the fourth-order RungeKutta integration algorithm is used as a numerical tool to solve the discretized equations.The self-excited vibration is briefly discussed first,focusing on the effect of flow velocity on the stability and Nonlinear Coupling of Pitch and Roll Modes in ShipMay 23,2012 supercritical nonlinear vibration of a fluid#0183;External and internal resonances of the pipe conveying fluid in the supercritical regime.Journal of Sound and Vibration,Vol.332,No.9 International Journal of Non-Linear Mechanics,Vol.25,No.2-3 Out-of-plane vibrations of a beam including non-linear inertia and non-linear
Journal of Fluids and Structures,Vol.94. Identification of Volterra kernels for improved predictions of nonlinear aeroelastic vibration responses and flutter.Engineering Structures,Vol.171. International Journal of Non-Linear Mechanics,Vol.41,No.6-7.More publications - jjth - StaffThomsen,J.J.,Nonlinear vibrations at work some potentials and obstacles,In M.Wiercigroch (ed.).,in Proceedings of the IUTAM Symposium on Nonlinear Dynamics for Advanced Technologies and Engineering Design (NDATED),University of Aberdeen,Scotland,UK,27-30 July 2010,2 pp.Modeling of Free Convection Heat Transfer to a Mar 12,2010 supercritical nonlinear vibration of a fluid#0183;In this paper,a Lattice Boltzmann Method (LBM) has been developed to simulate laminar free convection heat transfer to a supercritical fluid in a square enclosure.The LBM is an ideal mesoscopic approach to solve nonlinear macroscopic conservation equations due to its simplicity and capability of parallelization.
However,the flow can experience instabilities in supercritical water reactors,as the density change is very large for the supercritical fluids.A computer code SUCLIN has been developed employing supercritical water properties to carry out the steady state and linear stability analysis ofLi-Qun CHEN Professor Ph.D.School of ScienceNonlinear vibration isolation provides with an effective way for vibration reduction with broad band and high efficiency. Internal resonance and stress distribution of pipes conveying fluid in Large-amplitude parametric response of fluid-conveying Sep 10,2019 supercritical nonlinear vibration of a fluid#0183;In this article,the nonlinear parametric response of viscoelastic nanotubes conveying pulsatile flow is investigated.A two-parameter scale-dependent elasticity-based model is developed within the framework of a nonlocal theory with strain gradient influences.To model the effects of fluid molecules,which slip on the internal nanotube wall,on the parametric response,KarniadakisBeskok
Jun 11,2011 supercritical nonlinear vibration of a fluid#0183;This paper treats nonlinear vibration of pipes conveying fluid in the supercritical regime.If the flow speed is larger than the critical value,the straight equilibrium configuration becomes unstable and bifurcates into two possible curved equilibrium configurations.The paper focuses on the nonlinear vibration around each bifurcated equilibrium.The disturbance equation is derived from the Internal resonance and stress distribution of pipes Vibratory-stress distribution of pipes conveying fluid at supercritical speed is established.Factors that govern onset and growth of 1:3 internal resonances are uncovered.Internal resonance effects on fatigue properties of the pipes are examined.Boundary for incurring internal resonance suggests appropriate axial pre-pressure at diffeInternal resonance and stress distribution of pipes Nov 15,2020 supercritical nonlinear vibration of a fluid#0183;The supercritical vibration of a pipe conveying fluid can be regarded as the vibration around the new equilibrium configuration,so the transverse vibration divides into two parts.The coordinate transformation is introduced (7) ( , ) ^ k ( ) + ( , ) where ^ k ( ) represents static equilibrium configuration,(,) represents the vibration displacement around the static
DeSmidt,H.Imbalance Vibration Suppression of Supercritical Shafts With Automatic Balancing Devices. Proceedings of the ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference.Volume 1 21st Biennial Conference on Mechanical Vibration and Noise,Parts A,B,and C.Las Vegas Images of Supercritical Nonlinear Vibration of a Fluid researchgate.net(PDF) Supercritical Nonlinear Vibration of a Fluid researchgate.netA horizontal pipe conveying fluid with external harmonic researchgate.net(PDF) Supercritical Nonlinear Vibration of a Fluid researchgate.netIllustration of a nonlinear vibration energy harvester researchgate.net(PDF) Supercritical Nonlinear Vibration of a Fluid researchgate.net(PDF) Supercritical Nonlinear Vibration of a Fluid imagesResearch Article Supercritical Nonlinear Vibration of a Supercritical Nonlinear Vibration of a Fluid-Conveying Pipe Subjected to a Strong External Excitation Yan-LeiZhang,1 Hui-RongFeng,2 andLi-QunChen 3,4 College of Engineering,Shanghai Second Polytechnic University,Shanghai ,China College of Transportation and Civil Engineering,Fujian Agriculture and Forestry University,Fuzhou,Fujian ,ChinaGlobal Dynamics of Pipes Conveying Pulsating Fluid in the Abstract.Global dynamics of supercritical pipes conveying pulsating fluid considering superharmonic resonance of the second mode with 1:2 internal resonance are investigated.The governing partial differential equations in the supercritical regime are obtained based on the nontrivial equilibrium configuration of the pipes conveying fluid and then transformed into a discretized nonlinear gyroscopic
Fluids,an international,peer-reviewed Open Access journal.Journals.Information.For Authors For Reviewers For Editors For Librarians For Publishers For Societies.Article Processing Charges Open Access Policy Institutional Open Access Program Editorial Process Awards Research andFluid-Induced Nonlinear Vibration of a Cantilevered Zhang et al.investigated the nonlinear forced vibration of fluid-conveying pipes in the supercritical regime,that is,vibration about a curved equilibrium.Due to recent technological development in science and technology,the characteristic size of pipes becomes smaller and smaller.Flow-induced vibration of inherently nonlinear structures Jul 02,2020 supercritical nonlinear vibration of a fluid#0183;While our study was designed to focus specifically on the existence of large contributions of high frequency oscillations in the flow-induced vibration response of inherently nonlinear systems,the framework can be used for future research in this area to fully benefit from nonlinear phenomena,such as modal interactions,to further enhance the
Nonlinear forced vibration of a viscoelastic pipe conveying fluid around the curved equilibrium configuration resulting from the supercritical flow speed is investigated with the emphasis on dynamics of external and internal resonance.The governing equation for the pipe system,a nonlinear integro-partial-differential model with variable coefficients,is truncated into a discrete perturbed Evolution of the double-jumping in pipes conveying fluid Nonlinear forced vibration of a viscoelastic buckled beam  and of a viscoelastic pipe conveying fluid around curved equilibrium due to the supercritical flow  subjected to primary Evaluation of Property Methods for Modeling Direct Aug 17,2017 supercritical nonlinear vibration of a fluid#0183;Direct supercritical CO 2 (sCO 2) power cycles have received considerable attention in recent years as an efficient and potentially cost-effective method of capturing CO 2 from fossil-fueled power plants.These cycles combust natural gas or syngas with oxygen in a high pressure (200300 bar),heavily-diluted sCO 2 environment,such that the fluid entering the turbine is 9095% CO 2,with
S.-Y.Lee and Y.-C.Cheng,Nonlinear analysis on hunting stability for high-speed railway vehicle trucks on curved tracks, Journal of Vibration and Acoustics,Transactions of the ASME,vol.127,no.4,pp.324332,2005.View at Publisher Site Google Scholar; Dynamic stability analysis of a four-wheel railway vehicle on straight track.Cited by 2Publish Year 2016Author Yan-Lei Zhang,Hui-Rong Feng,Li-Qun Chen(PDF) Supercritical Nonlinear Vibration of a Fluid Supercritical Nonlinear Vibration of a Fluid-Conveying Pipe Subjected to a Strong External ExciCited by 14Publish Year 2012Author H.Ding,G.C.Zhang,L.Q.ChenNonlinear forced vibrations of supported pipe conveying Apr 14,2020 supercritical nonlinear vibration of a fluid#0183;Furuya et al.numerically and experimentally examined the nonlinear lateral vibrations of a vertical cantilevered pipe conveying a supercritical fluid for the case that the upper end of the pipe is excited periodically in a horizontal plane.The results showed that nonplanar limit cycle motions would settle down to stationary planar motions provided that the excitation frequency is near the frequency
Zhang et al. investigated the nonlinear forced vibration of uid-conveying pipes in the supercritical regime,that is,vibration about a curved equilibrium.An experimental investigation of vortex-induced vibration Aug 28,2013 supercritical nonlinear vibration of a fluid#0183;We experimentally examine the amplitude of a bluff body undergoing vortex-induced vibration (VIV) supported by linear and various nonlinear structuralAcoustically Augmented Flow and Transport in Supercritical Apr 02,2014 supercritical nonlinear vibration of a fluid#0183;Acoustically augmented flow and transport in supercritical fluid (CO 2) generated by standing wave in a cylindrical enclosure is simulated.The oscillatory flow field in the enclosure is created by the vibration of one of the end walls of the enclosure.
The vibration characteristics of a submerged axially moving band are investigated by a numerical study.A geometrically nonlinear axially moving band model is coupled to the acoustic fluid model and the periodic nonlinear problem is solved by the Fourier-Galerkin-Newton (FGN) method.The nonlinear dynamic behaviour is examined through the dependences between fundamental frequency,axial A nonlinear model for indirect combustion noise through a Full nonlinear and second-order models are written for both subcritical and supercritical nozzles in the absence of shock and a detailed methodology is provided for the resolution of the second-order system.The accuracy of the second-order model is assessed for entropy forcings.A non-linear turbulence model of supercritical fluid Sep 10,2020 supercritical nonlinear vibration of a fluid#0183;For supercritical fluid turbulence,the traditional Reynolds-averaged NavierStokes models cannot yield satisfying predictions under the heat transfer deterioration condition due to the modifications of the buoyancy on turbulence.