Interference effects on flow-induced oscillation of three tandem cylinders with passive turbulence control DOI
Huaijun Li, Michael M. Bernitsas,

Hai Sun

и другие.

Journal of Offshore Mechanics and Arctic Engineering, Год журнала: 2024, Номер 147(2)

Опубликована: Июль 16, 2024

Abstract The characteristics of flow-induced oscillation (FIO) multiple tandem cylinders with passive turbulence control (PTC) change due to interference between PTC cylinders. Identifying positive and negative interferences is vital for designing marine structures involving on elastic supports. Experiments a single cylinder, two three in were conducted study the placing an identical oscillating cylinder upstream, downstream, both upstream downstream. Critical parameters (damping, stiffness) Reynolds number (Re) are varied tests. onset inflow velocity reduced back-to-back vortex-induced vibration (VIV) galloping achieved, when vicinity basic oscillator. downstream enhances FIO In VIV region, one more effective than enhancement improves lower stiffness damping ratios. tends suppress oscillator higher stiffness. suppression vigorous that opposite true region. When placed oscillator, its enhanced whilst it suppressed

Язык: Английский

Energy harvesting of unequal-height cylindrical FIV considering wind direction DOI

Bowen Tang,

Xiantao Fan, Jiawei Wang

и другие.

International Journal of Mechanical Sciences, Год журнала: 2025, Номер unknown, С. 110118 - 110118

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Missing critical mass ratio in VIV of rigidly connected cylinders DOI
Zhipeng Yu, Huan Ping, Enhao Wang

и другие.

International Journal of Mechanical Sciences, Год журнала: 2025, Номер unknown, С. 110236 - 110236

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0

Vibration‐Based Energy Harvesting From a Two‐Degree‐of‐Freedom Auxetic Beam Element With Variable Stiffness DOI Creative Commons
Fevzi Çakmak Bolat, Beysim Çetin, Neven Alujević

и другие.

Wind Energy, Год журнала: 2025, Номер 28(7)

Опубликована: Июнь 2, 2025

ABSTRACT In this study, energy harvesting was carried out by creating a piezoelectric‐based two‐degree‐of‐freedom aeroelastic structure. It is aimed to obtain more gluing the piezoelectric material on auxetic region. addition, second degree of freedom created connecting three thin rods between beam element and flow disruptor geometry. By changing number these springs, effects different stiffness values harvest structure were examined. As result design, unique nonlinear harvester that can be adapted resonance frequencies with variable connection elements has been developed. Beam vibrations measured image processing method, its accuracy determined comparing them measurements taken laser sensor. The equations motion system obtained using Lagrange natural determined. experimental taken, dynamics confirmed performing numerical modal analysis in ANSYS environment. Model ensured open circuit voltage Finally, resistance connected structure, load value would provide optimum power output through

Язык: Английский

Процитировано

0

Enhancing energy harvesting through hybrid bluff body at a predefined angle of attack coupling vortex-induced vibration and galloping DOI

Haobo Huang,

Zhiyong Zhou, Pei Zhu

и другие.

Ocean Engineering, Год журнала: 2024, Номер 312, С. 119029 - 119029

Опубликована: Авг. 23, 2024

Язык: Английский

Процитировано

2

Interference effects on flow-induced oscillation of three tandem cylinders with passive turbulence control DOI
Huaijun Li, Michael M. Bernitsas,

Hai Sun

и другие.

Journal of Offshore Mechanics and Arctic Engineering, Год журнала: 2024, Номер 147(2)

Опубликована: Июль 16, 2024

Abstract The characteristics of flow-induced oscillation (FIO) multiple tandem cylinders with passive turbulence control (PTC) change due to interference between PTC cylinders. Identifying positive and negative interferences is vital for designing marine structures involving on elastic supports. Experiments a single cylinder, two three in were conducted study the placing an identical oscillating cylinder upstream, downstream, both upstream downstream. Critical parameters (damping, stiffness) Reynolds number (Re) are varied tests. onset inflow velocity reduced back-to-back vortex-induced vibration (VIV) galloping achieved, when vicinity basic oscillator. downstream enhances FIO In VIV region, one more effective than enhancement improves lower stiffness damping ratios. tends suppress oscillator higher stiffness. suppression vigorous that opposite true region. When placed oscillator, its enhanced whilst it suppressed

Язык: Английский

Процитировано

0