Related Experiment Video
Updated: Jul 31, 2025

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
Published on: February 20, 2019
A novel energy harvester based on dual vibrating mechanisms with self-actuation
Yi Hou1, Lipeng He1,2, Xuejin Liu1
1Key Laboratory of Micro/Nano and Ultra-Precision Manufacturing (Jilin Province), School of Mechatronic Engineering, Changchun University of Technology, Changchun, Jilin 130012, People's Republic of China.
Abstract:
This paper introduced a novel energy harvester with a tunnel and drop-shaped bluffbody for self-actuation and wind speed sensing. The harvester exhibits dual vibrating mechanisms of vortex-induced vibration (VIV) and galloping. Theoretical and numerical analyses were conducted to study the energy conversion relationship and fluid field of the harvester, and the conclusions were verified by controlled variable experiments. The optimal design values of inlet angle I 40°, polyvinylidene fluoride (PVDF) angle P 10°, and exit angle E 10° were demonstrated with the highest output of 10.42 Vp-p at the wind speed of 18 m/s. The output voltage of the PVDF energy harvester has a reliable relationship with the wind speed as a function of wind speed sensor, which could be applied for meteorological information collection and fluid flow rate monitoring with further study conducted underwater.
Related Concept Videos
Energy in Simple Harmonic Motion
Vibrating Concrete
Problem Solving: Energy in Simple Harmonic Motion
Consider the spring in a shock absorber of a car. The spring attached to the wheel executes simple harmonic motion while the car is moving on a bumpy road. The force on the...
Simple Harmonic Motion
Faraday Disk Dynamo
DC Generator

