Acoustics and Ionising Radiation Division, National Physical Laboratory, Hampton Road, Teddington TW11 0LW, UK.
Ultrason Sonochem. 2012 Jul;19(4):939-52. doi: 10.1016/j.ultsonch.2011.12.010. Epub 2011 Dec 21.
This paper describes theoretical and experimental methods for characterising the performance of a 25 kHz sonochemical reactor (RV-25), which is being developed as a reference facility for studying acoustic cavitation at the National Physical Laboratory (NPL). Field measurements, acquired in different locations inside the sonoreactor, are compared with finite element models at different temperatures, showing that relatively small temperature variations can result in significant changes in the acoustic pressure distribution (and consequent cavitation activity). To improve stability, a deeper insight into the way energy is transferred from the power supply to the acoustic field is presented, leading to criteria - based on modal analysis - to dimension and verify an effective temperature control loop. The simultaneous use of measurements and modelling in this work produced guidelines for the design of multi-frequency cylindrical sonoreactors, also described.
本文介绍了用于表征 25 kHz 声化学反应器（RV-25）性能的理论和实验方法，该反应器正在作为国家物理实验室（NPL）研究声空化的参考设备进行开发。在不同位置采集的现场测量值与不同温度下的有限元模型进行了比较，结果表明，相对较小的温度变化会导致声压分布（和随之而来的空化活动）发生显著变化。为了提高稳定性，本文更深入地研究了能量从电源传递到声场的方式，从而得出了基于模态分析的尺寸和验证有效温度控制回路的标准。在这项工作中，同时使用测量和建模方法为多频圆柱声反应器的设计提供了指导，也进行了描述。
