声场作用下两空化泡相互作用的研究

建立了声场作用下两空化泡泡壁的运动方程，得出了双空化泡的共振频率，振动半径及空化噪声声压．由频率方程，振动半径和声压方程可以看出两气泡的运动情况与单气泡的运动情况有着明显的不同．共振频率，共振振幅及声压与两气泡之间的间距有关．在一定的简化条件下，运用MATLAB语言对共振频率，共振振幅及空化噪声声压进行了数值求解，发现共振频率和共振振幅随空泡间距的增大而增大，空化噪声声压随距离增大先增大后减小． 关键词： 超声 空化 频率 声压

Two-bubble interaction under the sound field

The paper established the motion equation of two-bubble walls under the sound field, and obtained the resonant frequency, vibration radius and radiation pressure of the double-bubble cavitation. From the frequency equation, radius of vibration and sound pressure equation we can see that the movement of two-bubble is different from a single bubble. Resonance frequency, resonance amplitude and radiation pressure are related to the distance between the bubble. By carrying out the numerical solution by MATLAB, we found that the resonance frequency and amplitude resonance increased with the distance between the two-bubble.