Using Numerical Simulation of Fluid-Structure Interaction Model for Energy Harvesting with Piezoelectric Material

• Main Authors: ZHENG-LIANG SHI, 施政良
• Other Authors: Chun-Yin Wu
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/68px4h

碩士 === 大同大學 === 機械工程學系(所) === 107 === With the rapid development of science and technology, the Earth's resources and energy are gradually being exhausted. Therefore, this paper uses green energy as the main axis to develop equipment similar with hydroelectric power, and its energy is derived from the flow of water in the rivers. In this study the finite element method (FEM) software COMSOL uses to perform simulation on the fluid-structure Interaction problem. The simulation is applied to analyze the stress and deformation of piezoelectric material induced by the flow of water in the river. The piezoelectric material is deformed and the electric energy is generated. The force-electric coupling theory can be used to find the electrical energy that is directly proportional to the strain energy of the piezoelectric material. Therefore, the total strain energy of piezoelectric material generated during analysis time period is used as the design goal for energy harvesting device. The optimization method of COMSOL is applied to find the optimum geometric parameters of the fluid-induced energy harvesting device with maximum electric energy converted by strain energy generated by the fluid-induced vibration of device.