Vibration Analysis of a Piezoelectric Ultrasonic Atomizer to Control Atomization Rate
Vibration Analysis of a Piezoelectric Ultrasonic Atomizer to Control Atomization Rate
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DOI：
10.3390/app11188350
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发表时间：
2021-09-01
影响因子：
2.7
通讯作者：
Loh, Kenneth J.
中科院分区：
文献类型：
--
作者：
Guerra-Bravo, Esteban;Lee, Han-Joo;Loh, Kenneth J.
本文对超声雾化器进行了机械振动分析，以控制其雾化传质速率。超声雾化器是一种由压电环耦合到带微孔的金属圆形薄板上的装置。由于流体传递和动力力学之间的耦合作用，雾化传质机理是一个复杂的现象，难以模拟。本文采用有限元方法，对与压电环耦合的网格薄板在振动过程中的微孔形状以及谐振频率模式的影响进行了数值研究，并与理论和实验结果进行了比较。共振频率和原子化速率的预测结果与实验结果具有良好的相关性。
In this work, a mechanical vibrational analysis of an ultrasonic atomizer is carried out to control its atomization mass transfer rate. An ultrasonic atomizer is a device constructed with a piezoelectric ring coupled to a metallic circular thin plate with micro-apertures. The mechanism of mass transfer by atomization is a complex phenomenon to model because of the coupling effect between the fluid transfer and dynamic mechanics controlled by a piezoelectric vibrating ring element. Here, the effect of the micro-apertures shape of the meshed thin plate coupled to a piezoelectric ring during vibration, as well as the resonance frequency modes, are numerically studied using a finite element analysis and compared with theoretical and experimental results. Good correlations between the predicted and experimental results of the resonant frequencies and atomization rates were found.