Numercial Simulation On The Motion Equation Of Cavitation Bubble And The Enhancement Of Mass Transfer Due To Ultrasonic

The acoustic cavitation in the liquid due to the ultrasonic which effecting in a energy form and a lot of effects by the reciprocity of the cavitation bubble and the liquid has been applied in many fields, such as physics, chemistry, biology, etc.. It has a great future in these basic research and application technologies. The acoustic cavitation is a very complex process. The generation, growth and collapse of the of the cavitation bubble due to the ultrasonic could arouse many physical and chemic effects such as accelerating the chemic reaction, destroying the biologic organization, generating the luminescence etc.. Therefore, the research of the generation and the motion of the cavitation bubbles are very important.According to the cavitation bubble motion regulation of the generation, growth and collapse of the cavitation bubble; this investigation regards a cavitation bubble as a bob, which is filled with liquid. This investigation has detruded the cavitation bubble motion equation by the method of Rayleigh equation. A numerical simulation on the cavitations bubble motion was done employing by Matlab and the influence on the acoustic cavitations of many correlative parameters was discussed. It was founded that with the decreasing of ultrasonic frequency the amplitude of cavitations bubbles decreased, which made against for cavitation. Meanwhile with the increasing of acoustic pressure the motion of cavitation bubbles was enhanced, which was in favor of acoustic cavitation. It showed that with lower liquid viscosity, lower...