The Key Laboratory of Modern Acoustics, Ministry of Education, Institution of Acoustics, Nanjing University, Nanjing 210093, China.
The Key Laboratory of Modern Acoustics, Ministry of Education, Institution of Acoustics, Nanjing University, Nanjing 210093, China.
Ultrason Sonochem. 2021 May;73:105535. doi: 10.1016/j.ultsonch.2021.105535. Epub 2021 Mar 24.
Using a model that with or without considering the interaction between bubbles through the radiated pressure waves, numerical simulations of cavitation bubbles have been performed in order to study the effect of the bubble-bubble interaction on radial pulsations of bubbles. Comparing the results obtained by with or without considering the bubble-bubble interaction, it is suggested that the suppression or enlargement property of expansion ratios of bubbles due to the bubble-bubble interaction largely depends on the ultrasound parameters, the ambient bubble radii, the distances between bubbles and the number of bubbles (in multi-bubble environment, the last two aspects can be expressed using the coupling strength). The frequency response curve of expansion ratio decreases and shifts to left due to the bubble-bubble interaction and the larger the coupling strength is, the more the left-shifting is.
采用考虑或不考虑气泡间相互作用的模型，通过辐射压力波对空化气泡进行了数值模拟，以研究气泡间相互作用对气泡径向脉动的影响。通过比较考虑或不考虑气泡间相互作用的结果，表明气泡间相互作用对气泡膨胀比的抑制或放大特性在很大程度上取决于超声参数、环境气泡半径、气泡间距离以及气泡数量（在多气泡环境中，后两个方面可以用耦合强度来表示）。由于气泡间相互作用，膨胀比的频率响应曲线会下降并向左移动，而且耦合强度越大，向左移动的程度越大。
