A high-amplitude 2T mode of vortex-induced vibration for a light body in motion

Williamson, C. H. K.; Jauvtis, N.

doi:10.1016/j.euromechflu.2003.09.008

Cited by 87 publications

(40 citation statements)

References 16 publications

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“…Increasing the amplitude to A=3, and taking /0 . 5 co ff  again, a new vortex shedding mode is obtained, called '2C ', as quoted in Williamson & Jauvtis (2004). It is noteworthy that the '2C' mode is not taken by other authors for the case of circular cylinder in rotationallyoscillating moviment.…”

Section: Different Vortex Shedding Modesmentioning

confidence: 92%

“…It is observed different vortex shedding modes when fixed the oscillation amplitude and varies the frequency ratios. It is important to appreciate the 2C mode obtained in this study once this mode is not found in the literature for rotatinally-oscillating cylinder and it is worth mentioning that, according to Williamson & Jauvtis (2004) the 2C mode is obtained for pivoted cylinder. It is also obtained for the amplitude and frequency ratios considered the lock-in regime, whose range increases as the oscillation amplitude increases.…”

Section: Different Vortex Shedding Modesmentioning

confidence: 99%

“…It is noteworthy that the '2C' mode is not taken by other authors for the case of circular cylinder in rotationallyoscillating moviment. According to Williamson & Jauvtis (2004) this mode was obtained for pivoted cylinders. For /2 .…”

Section: Different Vortex Shedding Modesmentioning

confidence: 99%

See 2 more Smart Citations

An Introduction of Central Difference Scheme Stability for High Reynolds Number

Silva¹,

Neto²,

Lima³

2011

Computational Simulations and Applications

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Section: Different Vortex Shedding Modesmentioning

confidence: 92%

Section: Different Vortex Shedding Modesmentioning

confidence: 99%

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An Introduction of Central Difference Scheme Stability for High Reynolds Number

Silva¹,

Neto²,

Lima³

2011

Computational Simulations and Applications

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“…These vortices could be broken into three vortices. Therefore, the "2T" mode was formed [11]. During the one period of vortex shedding, these vortices also induced drilling riser vibration at three times the vibration frequency in the CF direction [22].…”

Section: Discussionmentioning

confidence: 99%

“…Researchers carried out many experiments to investigate the VIV mechanism. Williamson et al [10,11] gained a significant progress in low mass-damping of VIV, and determined that the vibration amplitude in the CF direction was about 1.5 times that of the size of the cylinder diameter, which was defined as the "super upper regime". They also investigated the wake mode and discovered the "2T" mode.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of vortex-induced vibration for drilling risers under uniform flow current

Mao¹,

Liu²,

Zhou³

et al. 2017

J. vibroeng.

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Abstract. An experiment was conducted in a deep water basin to investigate the vortex-induced vibration mechanism of a drilling riser. Various measurements were obtained by the fiber Bragg grating strain sensors, and data was analyzed by modal analysis method. Results show that the vibration mode of the drilling riser increases with the increasing flow velocity, and the vibration amplitude in the CF direction is larger than that in the IL direction. The vibrations in the CF and IL directions interact and mutually affect each other. The vibration mode in the IL direction is usually larger than that in the CF direction as the dominant vibration frequency is twice of that in the CF direction. Higher stresses may occur rather in the IL direction than in the CF direction. Hence, fatigue induced by the IL direction should also be taken into consideration when analyzing the fatigue life of a drilling riser. The three-time harmonic appears, and the phenomenon becomes more obvious as the flow velocity increased for the effect of the "2T" wake mode under the experiment condition. Displacement trajectories are significantly influenced by dominant vibration frequency and phase angle between the CF and IL directions. Crescent shapes, figure-eight, and inclined figure-eight are appeared in the experiment with the increasing flow velocity.

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A local‐analytic‐based discretization procedure for the numerical solution of incompressible flows

Pontaza

Chen

Reddy

2005

Numerical Methods in Fluids

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SUMMARYWe present a local-analytic-based discretization procedure for the numerical solution of viscous uid ows governed by the incompressible Navier-Stokes equations. The general procedure consists of building local interpolants obtained from local analytic solutions of the linear multi-dimensional advectiondi usion equation, prototypical of the linearized momentum equations. In view of the local analytic behaviour, the resulting computational stencil and coe cient values are functions of the local ow conditions. The velocity-pressure coupling is achieved by a discrete projection method. Numerical examples in the form of well-established veriÿcation and validation benchmarks are presented to demonstrate the capabilities of the formulation. The discretization procedure is implemented alongside the ability to treat embedded and non-matching grids with relative motion. Of interest are ows at high Reynolds number, O(10 5 ) -O(10 7 ), for which the formulation is found to be robust. Applications include ow past a circular cylinder undergoing vortex-induced vibrations (VIV) at high Reynolds number.

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A high-amplitude 2T mode of vortex-induced vibration for a light body in motion

Cited by 87 publications

References 16 publications

An Introduction of Central Difference Scheme Stability for High Reynolds Number

An Introduction of Central Difference Scheme Stability for High Reynolds Number

Experimental study of vortex-induced vibration for drilling risers under uniform flow current

A local‐analytic‐based discretization procedure for the numerical solution of incompressible flows

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