Numerical simulation of vortex-induced vibration of a circular cylinder at low mass-damping using RANS code

Pan, Zhiyuan; Cui, Wei; Miao, Q

doi:10.1016/j.jfluidstructs.2006.07.007

Cited by 168 publications

(81 citation statements)

References 17 publications

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“…The numerical simulations by (Pan, Cui, & Miao, 2007) reveal accurate results for the amplitude and frequency response of a cylinder subjected to VIV. However, the high amplitudes in the upper branch which are achieved experimentally by (Khalak & Williamson, 1996) were not captured in their work.…”

Section: Urans: the − Turbulence Modelmentioning

confidence: 81%

“…For flows between 35,000 < < 130,000, the distinction between different branches can be noticed from CFD results and the range of synchronization is correctly captured. However, the maximum amplitude achieved by the cylinder in the upper branch was not captured with CFD and this problem is also mentioned by some other researchers in the field (Guilmineau & Queutey, 2002), (Pan, Cui, & Miao, 2007). URANS can return accurate and fast results quantitatively for practical purposes but due to the insufficiency of the method, the wake modes and the physics of the flow should be investigated by more advanced methods like LES and DNS as also proposed by (Sarpkaya, 2004).…”

Section: Resultsmentioning

confidence: 99%

“…Some other parameters like the grid structure, the implementation of the dynamic mesh, the numerical algorithm and the selection of the time step size also play a role in the results obtained. Although the same turbulence model is used by (Guilmineau & Queutey, 2002), (Pan, Cui, & Miao, 2007) and the present study, the amplitude response of the cylinder in each reduced velocity differs. The closest computational results to the experiments are obtained by (Wanderley, Souza, Sphaier, & C, 2008) with the − model.…”

Section: Comparison Of Urans Turbulence Models With a Benchmark Casementioning

confidence: 94%

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2-D Urans Simulations of Vortex Induced Vibrations of Circular Cylinder at Trsl3 Flow Regime

Kınacı

2016

JAFM

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Research on vortex-induced vibrations (VIV) mainly involves experimental science but building laboratory setups to investigate the flow are expensive and time consuming. Computational fluid dynamics (CFD) methods may offer a faster and a cheaper way to understand this phenomenon depending on the solution approach to the problem. The context of this paper is to present the author's computational approach to solve for vortex-induced vibrations which cover extensive explanations on the mathematical background, the grid structure and the turbulence models implemented. Current computational research on VIV for smooth cylinders is currently restricted to flows that have Reynolds numbers below 10,000. This paper describes the method to approach the problem with URANS and achieves to return satisfactory results for higher Reynolds numbers.The computational approach is first validated with a benchmark experimental study for rather low Reynolds number which falls into TrSL2 flow regime. Then, some numerical results up to = 130,000, which falls into TrSL3 flow regime,are given at the end of the paper to reveal the validity of the approach for even higher Reynolds numbers.

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Section: Urans: the − Turbulence Modelmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Section: Comparison Of Urans Turbulence Models With a Benchmark Casementioning

confidence: 94%

See 1 more Smart Citation

2-D Urans Simulations of Vortex Induced Vibrations of Circular Cylinder at Trsl3 Flow Regime

Kınacı

2016

JAFM

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“…At low Reynolds numbers it is still possible [5] [6] to capture the main physics of VIV (for relatively simple systems as circular cylinders) using the Reynolds-averaged Navier-Stokes (RANS) formulation. In particular, in [6] it is discussed how the RANS formulation smooths the randomness in an intelligible way and therefore, comparing numerical predictions against experimental measurements, some random characteristics of the VIV response can be revealed. In [7], the VIV response of four circular cylinders in a square configuration is studied through the RANS approach.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis of vortex induced vibration of a gravity damper

Scappaticci¹,

Castellani²,

Astolfi³

et al. 2018

Diagnostyka

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A gravity damper is a one-way valve, employed for regulating the airflow rate in ducts, generally constituted by a series of rectangular panels (closure sections), connected to an articulated quadrilateral synchronizing the movements. If the device needs to process large masses of high speed air, as common in the case of energy conversion systems, disadvantageous dynamic effects can occur. In this study, vortexinduced vibration (VIV), occurring on a gravity damper for high values of the Reynolds number, is investigated. The analysis of this work couples numerical methods (Computational Fluid Dynamics with Large-Eddy Simulation turbulence model and Finite Element Method) to experiments: a full-scale accelerometric measurement campaign is actually performed at the wind tunnel facilities of the University of Perugia. VIVs are diagnosed and quantified through the experimental vibration analysis, which is interpreted through numerical simulations. The large amplitude of VIV is interpreted as due to a tendency towards lockin because of the approaching of the vortex shedding frequency to a natural vibration mode of the system. The integrated numerical and experimental framework finally inspires two different design solutions for mitigating the amplitude of VIV: these strategies are tested at the wind tunnel and they are indeed shown to be effective.

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“…It is known the structural vibration enhances spanwise correlation, as reported in Blevins [4], yielding the 2D models in closer agreement with actual flow condition. As an example, Pan et al [14] conducted a 2D CFD study for a freely oscillating cylinder and showed an acceptable response comparison with experimental counterparts.…”

Section: Introductionmentioning

confidence: 99%

On Two-dimensional Predictions of Turbulent Cross-flow Induced Vibration: Forces on a Cylinder and Wake Interaction

Elbanhawy

Turan

2010

Flow Turbulence Combust

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In this paper a typical fluid-structure interaction scenario is investigated for a turbulent flow past a circular cylinder at a relatively low subcritical Reynolds number. Numerous experimental and numerical studies have been undertaken for a baseline Reynolds number of 4,000 involving a stationary cylinder to study in detail the near wake mean flow and turbulence characteristics. These studies conclusively show that the turbulent wake displays significant coherent periodic structures of large eddies that could be adequately and profitably resolved by "low order modelling" of turbulence. In this study, an unsteady numerical framework is employed for the simulations, incorporating an Arbitrary Lagrangian-Eulerian (ALE) method for the associated grid deformation to simulate the coupled motion of the circular cylinder with a single degree of freedom in the initial zone in a typical cylinderflow response map or what is called "initial regime". Particular attention is paid towards resolving the large scales of the fluid motion and the inherent coupling of the cylinder's motion towards the associated evolution of the time averaged flow field. The flow-induced vibration effects regarding the kinetic energy exchange between the mean flow and the coherent periodic scales are investigated further. The predictions discussed and analyzed in detail in the paper display reasonable agreement with the chosen benchmark tests of the stationary cylinder and suggest 200 Flow Turbulence Combust (2010) 85:199-224 that the conclusions outlined regarding the coupled flow-cylinder system potentially provides a valuable contribution to the state of the art.

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Numerical simulation of vortex-induced vibration of a circular cylinder at low mass-damping using RANS code

Cited by 168 publications

References 17 publications

2-D Urans Simulations of Vortex Induced Vibrations of Circular Cylinder at Trsl3 Flow Regime

2-D Urans Simulations of Vortex Induced Vibrations of Circular Cylinder at Trsl3 Flow Regime

Diagnosis of vortex induced vibration of a gravity damper

On Two-dimensional Predictions of Turbulent Cross-flow Induced Vibration: Forces on a Cylinder and Wake Interaction

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