The Effect of the Layout of a Rigid Splitter Plate on the Flow-Induced Vibration of a Downstream Cylinder Subjected to Wake Flow DOI Creative Commons
Ruan Li,

Dingyong Yu,

Jian Bao

et al.

Journal of Marine Science and Engineering, Journal Year: 2023, Volume and Issue: 11(11), P. 2138 - 2138

Published: Nov. 9, 2023

In this study, the effect of additional positions rigid splitter plates on response characteristics tandem cylinders at a Reynolds number 150 and fixed distance ratio 5.0 was numerically investigated via computational fluid dynamics (CFD) method. Four layouts for cylinder–plate body, including downstream cylinder (DC), body with wake side plate (DCP), plate–cylinder an incoming flow (DPC), plate–cylinder–plate double-sided (DPCP), are considered. The results show that attached to or can suppress vibration in specific reduced velocity range (4.0 < Ur ≤ 10.0). Compared DC, maximum amplitude DPC DCP lock-in region is by 30.8% 47.4%, bandwidth also significantly narrower. layer separation point upstream moves upon adding both sides, resulting shear DPCP completely parallel free flow, while 93.6%, which realizes best stream-induced suppression.

Language: Английский

A Review on Vibration Control of Multiple Cylinders Subjected to Flow-Induced Vibrations DOI Creative Commons
Wanhai Xu,

Yexuan Ma

China Ocean Engineering, Journal Year: 2024, Volume and Issue: 38(2), P. 183 - 197

Published: April 1, 2024

Abstract The fatigue damage caused by flow-induced vibration (FIV) is one of the major concerns for multiple cylindrical structures in many engineering applications. FIV suppression great importance security structures. Many active and passive control methods have been employed an isolated cylinder undergoing vortex-induced vibrations (VIV). are mainly extended to cylinders from cylinder. Due mutual interference between cylinders, mechanism more complex than VIV mechanism, which makes a challenge suppression. Some efforts devoted systems over past two decades. methods, such as helical strakes, splitter plates, rods flexible sheets, not always effective, depending on influence factors, spacing ratio, arrangement geometrical shape, flow velocity parameters devices. response, hydrodynamic features wake patterns equipped with devices reviewed summarized. efficiency analyzed compared considering different factors. Further research suggested provide insight development promote applications methods.

Language: Английский

Citations

8
Adjoint-based shape optimization using lattice Boltzmann method for flow and sound control in tandem cylinders DOI Creative Commons
Kazuya Kusano, Hiroki Yamaguchi

Journal of Fluids and Structures, Journal Year: 2025, Volume and Issue: 135, P. 104308 - 104308

Published: March 14, 2025

Language: Английский

Citations

1
Numerical investigation on flow transition of two tandem circular cylinders in an X arrangement: Effects of spacing ratio and transverse inclination angle DOI Open Access
M. Gong,

Dingyong Yu,

Bassam B. Dally

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(1)

Published: Jan. 1, 2024

This paper reports on a numerical study of the effects five spacing ratios (L/D = 3–5) and eight transverse inclination angles (α 0°–30°) force coefficients wake patterns two tandem circular cylinders in an X arrangement, at subcritical Reynolds number Re 3900. It also addresses mutual interference between critical parameters determining flow transition (FT) from reattachment to co-shedding regime. The main findings are: (1) FT regimes was identified for considered range L/D α. induces sharp rise coefficients, especially downstream cylinder. can be triggered by ratio (L/D)c different α, as well excited angle αc L/D. (2) When α 0° (i.e., vertical cylinders), occurs 4.5–5. As increases 5°, 15°, 25°, gradually drops 4–4.5, 3.5–4, 3–3.5, respectively. From another perspective, with fixed 3.5, 4, 4.5, appears 20°–25°, 12.5°–15°, 0°–5°, Additionally, case 3 5, pattern, respectively, remains regimes. (3) formation regime requires sufficient gap space crossing cylinders. A nondimensional center top view (CS*top view), proposed reflect variation space. value CS*top excite falls within 3.5–5, which is function mathematical expression view) points predominant role when compared In addition, it accounts fact that has inverse effect vice versa. These provide new insight into understanding arrangement.

Language: Английский

Citations

4
Flow-induced vibrations of a square cylinder at different angles of attack: The importance of the in-line vibrations DOI
Boyang Li, H.B. Li,

Yongjian Zhong

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

A square cylinder is an ideal geometry for investigating both vortex-induced vibration (VIV) and galloping instabilities. The present work aims to evaluate the significance of in-line freedom on flow-induced vibrations (FIVs) a subjected flow. Numerical simulations were conducted two-degree-of-freedom (2-DOF) one-degree-of-freedom (1-DOF) with different angles attack. mass ratio, which structural divided by displaced fluid mass, set 5, Reynolds number fixed at 200. Detailed comparisons amplitude responses, frequency hydrodynamic characteristics, forces, transitions VIV-galloping, vortex shedding modes 2-DOF one only cross-flow oscillation conducted. Overall, trend 1-DOF similar that cylinder. However, when α between 5° 20°, results show there are two obvious peak regions in response cylinder, while second region not found This indicates considering crucial FIV as can alter responses vibrations.

Language: Английский

Citations

0
A review of flow-induced vibration in wind and oceanic flow: Mechanisms, applications, optimizations, and challenges DOI
M. Gong, Bassam B. Dally

Ocean Engineering, Journal Year: 2025, Volume and Issue: 325, P. 120748 - 120748

Published: March 3, 2025

Language: Английский

Citations

0
An experimental investigation of the flow control of a circular cylinder in near wake with parallel plates at Re = 7500 DOI
Tahir Durhasan, Fırat Ekinci, Erhan Fırat

et al.

International Journal of Heat and Fluid Flow, Journal Year: 2024, Volume and Issue: 106, P. 109276 - 109276

Published: Jan. 5, 2024

Language: Английский

Citations

2
Numerical study on flow-induced vibration of an oscillating cylinder with an unattached downstream square plate at a low Reynolds number DOI
M. Gong, Bassam B. Dally

Ocean Engineering, Journal Year: 2023, Volume and Issue: 288, P. 116072 - 116072

Published: Oct. 25, 2023

Language: Английский

Citations

5
Effect of a rotatable water-drop plate on vortex-induced vibration of cylinder DOI
Boyang Li,

Yongjian Zhong,

Baoshou Zhang

et al.

Ocean Engineering, Journal Year: 2023, Volume and Issue: 292, P. 116558 - 116558

Published: Dec. 18, 2023

Language: Английский

Citations

4
The Effect of the Layout of a Rigid Splitter Plate on the Flow-Induced Vibration of a Downstream Cylinder Subjected to Wake Flow DOI Creative Commons
Ruan Li,

Dingyong Yu,

Jian Bao

et al.

Journal of Marine Science and Engineering, Journal Year: 2023, Volume and Issue: 11(11), P. 2138 - 2138

Published: Nov. 9, 2023

In this study, the effect of additional positions rigid splitter plates on response characteristics tandem cylinders at a Reynolds number 150 and fixed distance ratio 5.0 was numerically investigated via computational fluid dynamics (CFD) method. Four layouts for cylinder–plate body, including downstream cylinder (DC), body with wake side plate (DCP), plate–cylinder an incoming flow (DPC), plate–cylinder–plate double-sided (DPCP), are considered. The results show that attached to or can suppress vibration in specific reduced velocity range (4.0 < Ur ≤ 10.0). Compared DC, maximum amplitude DPC DCP lock-in region is by 30.8% 47.4%, bandwidth also significantly narrower. layer separation point upstream moves upon adding both sides, resulting shear DPCP completely parallel free flow, while 93.6%, which realizes best stream-induced suppression.

Language: Английский

Citations

3