On the effect of spacing on the vortex-induced vibrations of two tandem cylinders

Παπαϊωάννου, Γεώργιος; Yue, Dick K. P.; Triantafyllou, Michael; Karniadakis, G. E.

doi:10.1016/j.jfluidstructs.2007.11.006

Cited by 159 publications

(67 citation statements)

References 29 publications

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“…The r.m.s value of the lift coefficient observed for the downstream cylinder was very large compared to the isolated cylinder. Papaioannou et al (2008) studied the effect of spacing on the vortexinduced vibrations of two tandem cylinders numerically. The computations were carried out in two dimensions for cylinder spacing in the range 2:5D-5D at a fixed Reynolds number, Re ¼ 160.…”

Section: Article In Pressmentioning

confidence: 99%

Flow-induced oscillation of two circular cylinders in tandem arrangement at low Re

Prasanth

Mittal

2009

Journal of Fluids and Structures

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Section: Article In Pressmentioning

confidence: 99%

Flow-induced oscillation of two circular cylinders in tandem arrangement at low Re

Prasanth

Mittal

2009

Journal of Fluids and Structures

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“…The conventional method is based upon the Newmark-family time marching as in Papaioannou et al [11] and Placzek et al [12], etc. When we are interested in explicit time marching, any type of time integration scheme can be utilized in principle only if it guarantees numerical stability.…”

Section: Coupling Methods Of Fsi (Fluid-structure-interaction)mentioning

confidence: 99%

Numerical simulation of vortex-induced vibration of a pivoted cylinder using the spectral element method

Sung

Baek

Hong

et al. 2012

Advances in Fluid Mechanics IX

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The present paper describes preliminary results of numerical simulation of VIV (vortex-induced-vibration) phenomenon around a pivoted circular cylinder subject to steady flow. The present flow model is based upon the Navier-Stokes equations with velocity-pressure formulation. The governing equations are solved through the Spectral Element Method (SEM), which possesses the property of high-order spatial accuracy as proposed by Karniadakis and Sherwin in their book Spectral/hp Element Methods for CFD. The solution procedure and characteristic aspects of the present modelling and numerical method are briefly stated. The coupling method of the body motion with the flow problem is restated from the viewpoint of the present problem. A series of numerical estimation of VIV flow characteristics have been carried out for varying parameters of the problem such as the reduced velocity and damping parameter, etc.

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“…[19][20][21] However, under certain conditions, some of the flow behaviors in controlled vibration can be very close to those in free vibration. 22,23 The numerical scheme of the immersed-boundary method ͑IBM͒ is explained in Sec.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear spacing and frequency effects of an oscillating cylinder in the wake of a stationary cylinder

Yang

Zheng

2010

Physics of Fluids

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A numerical study of the laminar necklace vortex system and its effect on the wake for a circular cylinder Phys. Fluids 24, 073602 (2012) Nonlinear responses to a transversely oscillating cylinder in the wake of a stationary upstream cylinder are studied theoretically by using an immersed-boundary method at Re= 100. Response states are investigated in the three flow regimes for a tandem-cylinder system: the "vortex suppression" regime, the critical spacing regime, and the "vortex formation" regime. When the downstream cylinder is forced to oscillate at a fixed frequency and amplitude, the response state of flow around the two cylinders varies with different spacing between the two cylinders, while in the same flow regime, the response state can change with the oscillating frequency and amplitude of the downstream cylinder. Based on velocity phase portraits, each of the nonlinear response states can be categorized into one of the three states in the order of increasing chaotic levels: lock-in, transitional, or quasiperiodic. These states can also be correlated with velocity spectral behaviors. The discussions are conducted using near-wake velocity phase portraits, spectral analyses, and related vorticity fields. A general trend in the bifurcation diagrams of frequency spacing shows the smaller the spacing, frequency, or amplitude, the less chaotic the response state of the system and more likely the downstream and upstream wakes are in the same response state. The system is not locked-in in any case when the spacing between the cylinders is larger than the critical spacing. The near-wake velocity spectral behaviors correspond to the nonlinear response states, with narrow-banded peaks shown at the oscillation frequency and its harmonics in the lock-in cases. High frequency harmonic peaks, caused by interactions between the upstream wake and the downstream oscillating cylinder, are reduced in the near-wake velocity spectra of the upstream cylinder when the spacing increases.

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On the effect of spacing on the vortex-induced vibrations of two tandem cylinders

Cited by 159 publications

References 29 publications

Flow-induced oscillation of two circular cylinders in tandem arrangement at low Re

Flow-induced oscillation of two circular cylinders in tandem arrangement at low Re

Numerical simulation of vortex-induced vibration of a pivoted cylinder using the spectral element method

Nonlinear spacing and frequency effects of an oscillating cylinder in the wake of a stationary cylinder

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