矩形声化学反应器空化场分布的研究  

Cavitation field distribution in rectangular sonochemical reactor

作　　者：李娟[1] 张明铎[1] 马奭文 王鲜艳[1] 

机构地区：[1]陕西师范大学应用声学研究所陕西省超声学重点实验室,陕西西安710062

出　　处：《化学工程》2012年第11期52-55,共4页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(10574086);陕西省教育厅科研计划基金项目(05JK165)

摘　　要：文章研究了分析反应器尺寸及液体深度对矩形声化学反应器空化场分布的影响。在刚性边界条件下,理论分析得出了纵向声压分布公式。用MATLAB仿真分析了纵向声压分布情况,并用染色法进行了实验验证。结果表明:声场中声压有多种简正声波和高次同相振动叠加而成。近场区总声压幅值以高次同相振动为主,声压幅值随液体深度的增大而迅速衰减;远场区则以简正声波为主,声压幅值随液体深度的增大而起伏变化。当满足一定条件时,在槽体可发生长度共振。The influence of the reactor size and the liquid depth on the cavitation field distribution in the rectangular sonochemical reactor was analyzed. In rigid boundary conditions, the formula of longitudinal pressure distribution was obtained through the theoretical analysis. The situation of longitudinal pressure distribution was simulated and analyzed by means of MTLAB, which was experimentally verified by staining method. The result shows that the sound pressure is superposed by normal sound wave and higher vibration in-phase. In the near-field region, the higher vibration in-phase is the main effect in the total sound pressure amplitude, and the sound pressure amplitude attenuates very fast with the increasing of liquid depth; in the far-field region, the normal sound wave is the main effect in the total sound pressure amplitude, and the sound pressure amplitude fluctuates with the increasing of liquid depth. When meeting the certain conditions, length resonance and transverse resonance may occur in the tank.

关 键 词：声化学反应器 空化场 纵向声场 液体深度 反应器尺寸 

分 类 号：TQ021[化学工程]