A novel energy harvester based on dual vibrating mechanisms with self-actuation

Author:

Hou Yi1ORCID,He Lipeng12ORCID,Liu Xuejin1ORCID,Wang Shuangjian1,Tian Xiaochao3ORCID,Yu Baojun1,Cheng Guangming4

Affiliation:

1. Key Laboratory of Micro/Nano and Ultra-Precision Manufacturing (Jilin Province), School of Mechatronic Engineering, Changchun University of Technology 1 , Changchun, Jilin 130012, People’s Republic of China

2. 2 Key, Laboratory of CNC Equipment Reliability, Ministry of Education, Jilin University, Changchun, Jilin 130025, People’s Republic of China

3. School of Mechanical and Vehicle Engineering, Changchun University 3 , Changchun, Jilin 130022, People’s Republic of China

4. Institute of Precision Machinery, Zhejiang Normal University 4 , Jinhua, Zhejiang 321004, 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.

Funder

Education Department of Jilin Province

Opening Project of the Key Laboratory of CNC Equipment Reliability

National Natural Science Youth Foundation of China

Publisher

AIP Publishing

Subject

Instrumentation

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