【摘要】 基于双气泡耦合振动方程,研究了强声场中初始半径为10μm以上的两个球形气泡之间的次Bjerknes力,并探讨了驱动声压振幅、驱动频率、气泡间距和双泡的初始半径对次Bjerknes力的影响。结果表明:强声场中气泡运动的非线性效应,使泡间的次Bjerknes力增加,进而导致气泡大量聚集,互相牵制,形成稳定的气泡结构,即气泡群聚现象。更多还原

【Abstract】 The secondary Bjerknes force between two big spherical bubbles is obtained based on the nonlinear equations of two bubbles.The influence of driving pressure,driving frequency and the initial radii of two bubbles,the distance between two bubbles on the secondary Bjerknes force are investigated.The results show that the secondary Bjerknes force between two big spherical bubbles is enhanced under the inlinear oscillation.Under such attract force,the bubbles are gathered,and form stable structure(bubble accumulation).更多还原