Energy harvesting using piezoelectric sheet fixed on a flexible plate attached to a cylinder in free stream flow

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

Published: Feb. 1, 2025

We experimentally investigate the piezoelectric energy harvesting of ambient wind due to flow-induced vibration a flexible plate. A sheet is glued on thin plate and composite attached lee side circular cylinder subjected free stream flow. study seven cases this simple configuration, comprising only pasted plates with varying lengths thicknesses. The velocity external load resistance are varied in range 4.8–17.1 m/s 5–100 kΩ, respectively, test large practical conditions. describe dynamics by analyzing displacement, frequency response, phase plane, oscillation envelopes. In addition, voltage power output recorded analyzed. Furthermore, we illustrate budget assessment estimate efficiency system. An optimum for maximum an transduction found lock-in regime. (order mW) observed at different ranges flow velocities cases. circuit designed demonstrate harvested can multiple light-emitting diodes. plate, therefore, increases two three orders magnitude compared using sheet.

Language: Английский

---

Analysing wave power absorption by deformable plate wave energy converter placed under an ice cover using a novel numerical technique

Ocean Engineering, Journal Year: 2025, Volume and Issue: 321, P. 120373 - 120373

Published: Jan. 20, 2025

Language: Английский

---

A review of flow-induced vibration in wind and oceanic flow: Mechanisms, applications, optimizations, and challenges

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

Published: March 3, 2025

Language: Английский

---

Enhancing wind energy harvesting performance through staggered dual cylinders inspired by migrant bird lift sharing effect

Renewable Energy, Journal Year: 2025, Volume and Issue: unknown, P. 122905 - 122905

Published: March 1, 2025

Language: Английский

---

Ferroelectric hydrogels from amino acids and oleic acid

iScience, Journal Year: 2024, Volume and Issue: 27(9), P. 110601 - 110601

Published: July 27, 2024

Language: Английский

---

Amplification of flow-induced vibrations of a circular cylinder by an oscillating minute attachment

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(8)

Published: Aug. 1, 2024

The presence and circumferential oscillation of rivulets can excite large-amplitude vibrations for cables. Inspired by this phenomenon, a minute attachment was employed to simulate the upper-rivulet motion successfully excited vibration circular cylinder in wind tunnel. By attachment, we mean stainless-steel strip exhibiting morphological dimensional characteristics analogous rivulet. role circumferentially oscillating on flow-induced explored detailed flow structural measurements. experimental results demonstrated that as velocity increased, amplitude model progressively impact aerodynamics increased well. It also found wake behavior shifted from alternating vortex shedding periodic “expansion–contraction” flapping boundary layers with increasing velocity. In particular, could control layer separation form “low zone” upper surface varied attachment. Then, aerodynamic lift force synchronized frequency, which equal natural frequency vibrating cylinder. As consequence, rapidly developed.

Language: Английский

---

Ferroelectric soft materials formed with alkanolamines and unsaturated fatty acids

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: unknown, P. 126823 - 126823

Published: Dec. 1, 2024

Language: Английский

---