Hatanaka Shin-ichi, Mitome Hideto, Yasui Kyuichi, Hayashi Shigeo
Department of Applied Physics and Chemistry, The University of Electro-Communications, Chofugaoka, Chofu, Tokyo, Japan.
Ultrasonics. 2006 Dec 22;44 Suppl 1:e435-8. doi: 10.1016/j.ultras.2006.05.022. Epub 2006 Jun 2.
Forced fluid flow can cause the enhancement of multibubble sonoluminescence (SL) under suitable conditions. The effect of directional flow with a circulator is similar to that of rotating flow with a stirrer. The mechanism of the enhancement is that both flows prevent cavitation bubbles from coalescing and clustering, which are responsible for the quenching of SL. The intensity of sonochemiluminescence (SCL) in an aqueous luminol solution increases with flow speed at higher ultrasonic powers more significantly than that of SL in distilled water. However, in the range of low ultrasonic power, the intensities of SL and SCL decrease with flow speed. Therefore, an optimum flow speed exists in relation to ultrasonic power and frequency.
在适当条件下，强制流体流动可导致多泡声致发光（SL）增强。使用循环器的定向流效果与使用搅拌器的旋转流效果相似。增强的机制是这两种流动都能防止空化气泡合并和聚集，而空化气泡合并和聚集会导致SL猝灭。在较高超声功率下，鲁米诺水溶液中的声化学发光（SCL）强度随流速增加，比蒸馏水中SL强度的增加更显著。然而，在低超声功率范围内，SL和SCL的强度随流速降低。因此，相对于超声功率和频率存在一个最佳流速。
