Design Parameters Affecting the Performance of Vortex-Induced Vibration Harvesters

Micromachines, Journal Year: 2025, Volume and Issue: 16(2), P. 122 - 122

Published: Jan. 22, 2025

Vortex-induced vibration harvesters are usually equipped with small piezoelectric patches mounted near the cantilever clamp, where largest longitudinal stress occurs. This paper, aiming to improve energy harvesting performance, investigates possibilities of extending patch length and modifying mass a bluff body on harvester induce vortex shedding. A novel analytical model based dimensionless numbers is presented determine output voltage generated by subjected periodic highlights design parameters having influence performance provides guidance planning experimental tests interpretation results. Some prototype different designs built. First, carried out identify natural frequencies damping ratios prototypes; then, prototypes tested in wind tunnel assess performance. The best achieved when about 20% length, long, its reaches minimum value. result agrees prediction model.

Language: Английский

Superhydrophobic Piezoelectric Device for Efficient Raindrop Energy Harvesting

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 22, 2025

Language: Английский