A Novel Fluid-Flow Based Micro Energy Harvester for Bio-medical device
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The key challenge for successful deployment of Energy Harvester (EH) technology remains in the provision of adequate energy. This book aims to address this challenge by investigating on a Finite Element Analysis (FEA) EH device to enhance output power in µW levels of a fluid flow induced vibration based piezoelectric EH. Firstly, a simplified analytical model of a unimorph cantilever capable of transforming low-level vibrations into electricity has been developed based on Euler-Bernoulli method. Later, the cantilever utilized MATLAB based Genetic Algorithm (GA) optimization routine to find th...
The key challenge for successful deployment of Energy Harvester (EH) technology remains in the provision of adequate energy. This book aims to address this challenge by investigating on a Finite Element Analysis (FEA) EH device to enhance output power in µW levels of a fluid flow induced vibration based piezoelectric EH. Firstly, a simplified analytical model of a unimorph cantilever capable of transforming low-level vibrations into electricity has been developed based on Euler-Bernoulli method. Later, the cantilever utilized MATLAB based Genetic Algorithm (GA) optimization routine to find the optimum geometric parameters. Based on Reynolds number analysis of few bluff-body shapes, a D-shaped bluff body has been chosen to be integrated with the optimized micro cantilever. The whole structure is assembled inside a three-dimensional micro channel to develop the complete fluid flow based EH in COMSOL. The novelty of the design relies on integrating the optimized micro cantilever with the D-shaped bluff body that implies piezoelectric micro cantilever as a direct vortex shedding EH instead of using parasitic vibration. The EH can be utilized for low duty cycle sensors applications.
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