双超声空泡相互作用研究

Interaction between two ultrasonic cavitations

应用Rayleigh方程的推导方法,考虑多种影响空泡运动的参数,把空泡看作一个以液体为负载的振子,得出了空泡的运动方程,并对单、双空泡运动方程的异同在理论上进行了比较.应用Matlab语言模拟出了单双空泡运动瞬时半径随时间的变化曲线.结果表明:不同参数对空泡运动影响很大,直接关系到声空化效果,双空泡的运动与两泡间距离L有关.当L趋于无穷大时,两空泡间的相互作用可以等效于单空泡运动情况.

Following the method of Rayleigh equation and taking into account the parameters of the bubble,the movement equations of the bubble which is seen as a liquid load of the oscillator are obtained.The differences of the equations of single and double bubbles are analyzed.The curve relationships of both equations are simulated by using the Matlab methods.The results show that different parameters have great influences on the movement of the bubbles and are directly related to the effects of the acoustic cavitations,while the movement status of two bubbles are connected with the distance between them.