中文摘要：

目的研究侧面辐射声化学反应器的声场分布。方法从三维声波方程出发，根据声化学反应器的声学边界条件，推导其中的声压表达式。结果声场中声压由多种简正声波和高次同相振动叠加而成。结论声压幅值的横向分布取决于声源的振动方式，纵向分布取决于反应容器的几何尺寸、声源振动频率、液体中的声速以及液体的深度等。近场区以高次同相振动为主，声压幅值随着纵向距离的增大而迅速衰减；远场区则以简正声波为主，声压幅值随着纵向距离的增大而起伏变化。

英文摘要：

Ahn To study the sound field of sonochemical reactor which radiates sound from the side wall of the reactor. Methods Based on the acoustic wave eqation in three-dimensional, the sound pressure in the reactor was sought according to the acoustic boundary conditoin of the reactor. Results The sound pressure is superposed by normal sound wave and higher vibration in phase. Conclusion The transverse sound pressure amplitude lies on the vibration mode of the sound source. And the lognitudinal sound pressure amplitude lies on the geometrical dimension of the reactor, the vibration frequency of the source, the sound velocity of the liquid in the reactor and the liquid depth. In the field near the source, the higher vibration in phase is dominant in the field and the sound pressure amplitude decays rapidly as the lognitudinal distance increases. In the field far from the source, the normal sound wave is dominant in the field and the sound pressure amplitude changes up and down as the lognitudinal distance increases.