Design and Experimental Evaluation of Synthetic Jet Piezo-Actuators

• Main Author: 陳華斌
• Other Authors: 羅正忠
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/90202937486649528113

碩士 === 大葉大學 === 機械工程學系碩士班 === 91 === The primary objective of active flow control research is to develop a cost-effective technology that has the potential for revolutionary advances in aerodynamic performance and maneuvering compared to conventional approaches. The development of such systems have many implications for aerospace vehicles including: reduced mechanical complexity and hydraulic failure, reduced noise and weight, lower energy and fuel consumption, lower downtime and maintenance, enhanced maneuvering and agility with enhanced aerodynamic performance and safety. Interest in active flow control for aerospace applications has stimulated the recent development of innovative actuator designs that create localized disturbances in a flowfield. The primary objective of this dissertation is to observe the influence of the geometry parameters (cavity depth and lip thickness) on the characteristic of piezoelectric synthetic jet actuator (natural frequency, amplitude and flow speed) by experimental measurement. And find the optimum geometry parameters for piezoelectric synthetic jet actuator. This dissertation will develop an impedance model of piezoelectric synthetic jet actuators. In impedance modeling, the individual components of a synthetic jet are modeled as an element of an equivalent electrical circuit. A transfer function will be find out to provide referral for designing.