超音波應用在近幾十年來蓬勃發展，其中聲化學是一門新興的超音波應用，主要指利用超音波空蝕汽泡反覆崩裂下汽泡內部產生極高的溫度及壓力，加速化學反應或觸發新的反應通道，以提高化學反應產率或獲取新的化學反應物。本文使用有限元素分析及基因演算法對高效率流室聲化學反應器全系統設計最佳化尺寸，再藉由LabVIEW串連訊號產生器及示波器加以控制化學反應過程中的頻率，使聲化學反應器在此控制下，能使聲化學反應器產生最大的平均聲壓，並量測出Cavitation yield隨時間產生的變化。本文將採用四組自製的壓電換能器驅動聲化學反應器，並量測其聲化學反應效率。實驗結果與COMSOL顯示本文設計出的流室式反應器可以在消耗較少能量的情況下其Cavitation yield較文獻中已發表的實驗數據來得大，且LabVIEW控制頻率對聲化學效率有獲得改善，但Cavitation yield仍會隨時間有降低的趨勢。

Over the decades, ultrasound and sonochemical effects had been studied for accelerating and enhancing some chemical reactions. The studies and applications of sonochemistry are indeed prosperous. Therefore, this study aims at developing a high-efficiency ultrasonic flow cell by building the numerical model with COMSOL Multiphysics and associated with the optimization algorithm software MatLab. I took over previous works of my senior to consider the reason why the cavitation yield decreases as time increases. In this study, I employed COMSOL finite element method genetic algorithm to optimize ultrasonic transducers and flow cell at the same time in order to avoid the effect of the simulation accuracy. By driving homemade Langevin-type transducers with specific frequency that is controlled by LabVIEW, so that frequency can be adjust as long as the power get fewer and fewer.
The results of experiments show that using LabVIEW controlling the function generator can increase the cavitation yield and the instantaneous power. Besides, it also show that acoustic field get centralized after simulating by COMSOL.

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