Numerical investigation of vortex induced rotation of two square cylinders in tandem arrangement

Shao, J. Y.; Chen, Shu; Liu, N.Y.; Zhao, Xiang

doi:10.1016/j.oceaneng.2018.11.026

Cited by 26 publications

(5 citation statements)

References 24 publications

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“…In order to better describe and analyse the phenomena, here we first define two terms. Following Park et al (2015), Ryu & Iaccarino (2017), Pan et al (2019) and Shao et al (2019), we use 'regime' to refer to the dynamic responses of the square cylinder; by contrast, the term 'region' is used to describe an area in the (ρ, Re) phase plane, for the ease of following discussions. As will be shown in the following parts, 'region' and 'regime' are not a bijection.…”

Section: Resultsmentioning

confidence: 99%

“…(2019) and Shao et al. (2019), we use ‘regime’ to refer to the dynamic responses of the square cylinder; by contrast, the term ‘region’ is used to describe an area in the phase plane, for the ease of following discussions. As will be shown in the following parts, ‘region’ and ‘regime’ are not a bijection.…”

Section: Resultsmentioning

confidence: 99%

“…Comparing with Zaki et al (1994), this classification showed more details and complexities at moderate Reynolds numbers, by discussing the phase synchronization/differences between the moment generation and angle of rotation in different regimes. There also exist other studies considering more complicated cases, such as the combination of square cylinders (Shao et al 2019) and rotation in a microchannel (Pan, Chen & Wu 2019). Similar to the VIVs, these complicated settings lead to different response of the square cylinder, but the responses were not beyond the classification of Ryu & Iaccarino (2017).…”

Section: Introductionmentioning

confidence: 99%

“…There also exist other studies considering more complicated cases, such as the combination of square cylinders (Shao et al. 2019) and rotation in a microchannel (Pan, Chen & Wu 2019). Similar to the VIVs, these complicated settings lead to different response of the square cylinder, but the responses were not beyond the classification of Ryu & Iaccarino (2017).…”

Section: Introductionmentioning

confidence: 99%

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Vortex-induced rotation of a square cylinder under the influence of Reynolds number and density ratio

Mou,

Huang,

Huang

et al. 2024

J. Fluid Mech.

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Numerical simulations are carried out on the vortex-induced rotations of a freely rotatable rigid square cylinder in a two-dimensional uniform cross-flow. A range of Reynolds numbers between 40 and 150 and density ratios between 0.1 and 10 are considered. Results show eight different characteristic regimes, expanding the classification of Ryu & Iaccarino (J. Fluid Mech., vol. 813, 2017, pp. 482–507). New regimes include the transition and wavy rotation regimes; in the ${\rm \pi}$ -limited oscillation regime we observe multipeak subregimes. Moment-generating mechanisms of these regimes and subregimes are further elucidated. A phenomenon related to the influence of density ratio is the tooth-like shape of the ${\rm \pi} /2$ -limit oscillation regime observed in the regime map, which is explained as a result of the imbalance relation between the main frequencies of rotation response and the vortex shedding frequency. In addition, existence of multiple regimes and multistable states are discussed, indicating multiple stable attractive structures in phase space.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vortex-induced rotation of a square cylinder under the influence of Reynolds number and density ratio

Mou,

Huang,

Huang

et al. 2024

J. Fluid Mech.

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“…First, we consider the simulation case for m * = 20 that has been originally proposed in Robertson et al [99] and later studied in [7,14,28,58,100,101]. For this case, the simulation parameters are: m * = 20, Re = 250, reduced velocity, U r = v∞ fn D = 40, and ξ = 0.0037.…”

Section: Galloping With Mass Ratio M * = 20mentioning

confidence: 99%

A second-order accurate non-intrusive staggered scheme for the interaction of ultra-lightweight rigid bodies with fluid flow

Kadapa

2020

Ocean Engineering

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This paper presents a staggered scheme with second-order temporal accuracy for fluid-structure interaction problems involving ultra-lightweight rigid bodies. The staggered scheme is based on the Dirichlet-Neumann coupling and is non-intrusive. First, the spectral properties of the staggered scheme are studied and also compared against the monolithic scheme using a linear model problem. Later, the suitability and effectiveness of the staggered scheme for problems involving incompressible flows and lightweight rigid solids are illustrated by using the examples of galloping of a square cylinder and lock-in of a circular cylinder for mass-ratio values as low as 0.01. This is the first time in the literature flow-induced vibrations of rigid bodies with such low mass ratio values are successfully simulated using a staggered scheme. Two different fluid solvers are considered to illustrate the non-intrusive nature of the proposed scheme. Guidelines for choosing the relaxation parameter are also provided. With its iteration-free nature and with a single (relaxation) parameter, the proposed staggered scheme renders itself as an accurate and computationally efficient scheme for fluid-rigid body interaction problems, including those involving lightweight structures.

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Experimental and numerical investigation of flow around an inline square cylinder array at a high Reynolds number

et al. 2022

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Numerical investigation of vortex induced rotation of two square cylinders in tandem arrangement

Cited by 26 publications

References 24 publications

Vortex-induced rotation of a square cylinder under the influence of Reynolds number and density ratio

Vortex-induced rotation of a square cylinder under the influence of Reynolds number and density ratio

A second-order accurate non-intrusive staggered scheme for the interaction of ultra-lightweight rigid bodies with fluid flow

Experimental and numerical investigation of flow around an inline square cylinder array at a high Reynolds number

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