Numerical Analysis of Vortex Shedding Behavior of Piezoelectric Microgenerator from Dynamic Airflow-Induced Vibration

Abstract:

Computational fluid dynamics (CFD) method is applied to analyze airflow field of acoustic-induced vibration piezoelectric generator. In this paper, numerical simulation has been performed for the unsteady flow field of nozzle vortex shedding with inlet and outlet boundary conditions. Distribution of velocity, pressure and vortices field has been calculated and analyzed in the process of vortex shedding in order to provide a reference for optimizing source frequency. The result shows that jetting initially shows vortex shedding when adopting the nozzle of variable flow tube structure, which is an equal section flow tube with necking cross section flow tube. The analysis method of this paper is laid the foundation for the design of power airflow acoustic source generator.

• Periodical: Advanced Materials Research (Volumes 694-697)
• Pages: 1595-1601
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.694-697.1595
• Online since: May 2013
• Authors: Fei Li, He Juan Chen
• Keywords: Dynamic Airflow-Induced Vortex, Piezoelectric Microgenerator, Vortex Shedding, Vortex-Induced Vibration (VIV)

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