HU Shu-fang, WU Sheng-ju*, SU Jie, YUAN Yuan
(College of Physics and Information Technology, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
The effect of the standing wave field in distilled water on the tiny particles is studied, the motion behaviour of particles is observed and analysed with the theory of acoustic streaming and radiation pressure. Finally, the cavitation phenomena in the standing wave field is discussed by the method of spectrum analysis. The result indicated that most of the particles are gathered in the pressure loop.But in the pressure node, the ultraharmonics are appeared clearly, which shows the acoustic cavitation occurs in pressure node.
KeyWords:
standing wave field; particles; acoustic streaming; acoustic radiation pressure; acoustic cavitation
