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

Andrei Fershalov,

Niell Elvin,

Pieter Orlandini

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 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.

Language: Английский

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

Andrei Fershalov,

Niell Elvin,

Pieter Orlandini

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 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.

Language: Английский

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