声场中双空化泡的运动特性

摘要

空化泡的运动特性是声场作用下的动力学行为,受空化泡初始半径,声压幅值,驱动声压频率,液体特性等众多因素的影响,是个复杂工程.本文从双空化泡运动方程出发,考虑到液体粘滞系数、空化泡辐射阻尼项的影响,研究了不同初始半径、驱动声压频率、驱动声压幅值、液体粘滞系数下空化泡泡壁的运动情况,研究结果表明不同初始半径、外界驱动声压频率、驱动声压幅值、液体粘滞系数均会对空化泡的膨胀比和空化泡的溃灭时间有一定影响.%The movement characteristics of cavitation bubble is a kind of important dynamic behavior under the sound field.It is influenced by the cavitation bubble initial radius,pressure amplitude and driving frequency of sound pressure.Considering the liquid viscosity coefficient and the radiation damping effect of cavitation bubble,the movement of cavitation bubble wall with different initial radius,driving frequency and driving amplitude of sound pressure,and liquid viscosity coefficients is studied based on the double cavitation bubble motion equation.The results show that different initial radius,external driving frequency and driving amplitude of sound pressure,the liquid viscosity coefficients has a certain influence on expansion ratio and breaking time of cavitation bubble.