Cantilever beam vibration from fluid interactions with triangular shape blunt body for energy harvesting application

摘要

This paper presents a cantilever beam vibration from fluid interactions with triangular shape blunt-body for energy harvesting application. The cantilever beam produces mechanical energy by interacting between fluid and blunt-body and then converts it into an electrical energy through the piezoelectric effect. The cantilever beam has been developed in the COMSOL software by using the finite element method. In this work, Reynolds number, the lift and drag coefficients have been chosen to analyze two blunt-bodies of circular shape and triangular shape to identify the right blunt-body for optimized cantilever based energy harvester design. To harvest the energy from the vibration viewpoint, it is essential to calculate the frequency of vibrations at different fluid speeds. The main motive here is to seek a higher synchronized region of frequencies for the oscillation amplitudes for a range of fluid velocity and to calculate the lift and drag coefficients. The result of the proposed method outperforms better than the other compared methods and the result proved that the triangular shape blunt-body has higher lifting force compared to the circular shape that produces 0.5V.