Modeling and validation of a tri-section beam based multi-directional galloping energy harvester

Mechanical Systems and Signal Processing, Год журнала: 2025, Номер 226, С. 112354 - 112354

Опубликована: Янв. 16, 2025

Язык: Английский

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Turbulent separation control with a tilted wavy wall: A promising approach for energy savings in aerodynamic systems

Energy, Год журнала: 2025, Номер unknown, С. 135758 - 135758

Опубликована: Март 1, 2025

Язык: Английский

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Harvesting sustainable energy through vortex-induced vibrations of finite length cylinder

Physics of Fluids, Год журнала: 2025, Номер 37(4)

Опубликована: Апрель 1, 2025

Vortex-induced vibration (VIV) has emerged as a promising method for small-scale energy harvesting. This research explores the key parameters affecting VIV in cylinder-cantilever beam system within Reynolds number range of 400–7500. The investigation focused on identifying airflow velocity thresholds that initiate vibrations, measuring peak amplitudes, and determining critical velocities where vibrations are maximized. By systematically varying mass, stiffness, cylinder diameter, we examined their distinct effects behavior. Key outcomes indicate larger diameters lead to increased amplitudes broader operational bandwidths, while adding mass reduces bandwidth. Higher stiffness boosts both maximum amplitude bandwidth, shifting these higher velocities. lock-in regime was observed at Strouhal (St) between 0.175 0.197, with cessation occurring an approximately consistent each diameter. occurred St ≈ 0.16, fluctuations less than 5% across all models. Additionally, wake structure behind its behavior bandwidth were analyzed using flow visualization techniques. A hot-wire anemometer positioned downstream measured from vortex shedding. These findings offer practical insights optimizing VIV-based harvesting, linking response power output. study contributes understanding harvesters provides foundation validating numerical models enhancing efficiency sustainable systems.

Язык: Английский

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Improving piezoelectric wind energy harvesting performance with snowflake-shaped bluff bodies

International Journal of Mechanical Sciences, Год журнала: 2025, Номер unknown, С. 110244 - 110244

Опубликована: Апрель 1, 2025

Язык: Английский

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High-efficiency bi-directional wind energy harvesting based on wake interactions in bluff body tandem configuration

Mechanical Systems and Signal Processing, Год журнала: 2025, Номер 234, С. 112835 - 112835

Опубликована: Май 12, 2025

Язык: Английский

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