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Dynamics of cavitation bubbles in acoustic field near the rigid wall

机译：刚性壁附近声场中空化气泡的动力学

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Dynamics of multiple cavitation bubbles near the rigid wall subjected to the incident acoustic wave with different arrangements is researched in this paper. Wave equation is used to approximate the prophase and anaphase motion of cavitation bubble to consider the compressibility of fluid. The modified Bernoulli equation is deduced as the boundary condition for cavitation bubble in acoustic field. Influences of compressibility, acoustic wave frequency and amplitude, incident angle, and the bubble arrangements on the dynamics of cavitation bubbles are presented. Numerical results show that the compressibility of fluid will impact the intensity of motion. The dynamics of bubbles is affected by the incident amplitude and frequency, and limited by the rigid wall. The different incident angles and arrangements of bubbles will change the acting pressure phase and interaction between bubbles and rigid wall, which will lead to the motion advancement or delay. The radius difference will increase with the large phase difference and the strong rejection. The jet will be oblique to the incident direction, as well as the rigid wall and bubbles around. (C) 2015 Elsevier Ltd. All rights reserved.
机译：研究了刚性壁附近在不同声波作用下入射声波作用下的多个空化泡动力学。波动方程用于近似空化气泡的前期和后期运动，以考虑流体的可压缩性。推导了修正的伯努利方程作为声场中空化气泡的边界条件。提出了可压缩性，声波频率和振幅，入射角以及气泡排列对空化气泡动力学的影响。数值结果表明，流体的可压缩性将影响运动强度。气泡的动力学受入射振幅和频率的影响，并受刚性壁的限制。气泡的不同入射角和排列将改变作用压力相位以及气泡与刚性壁之间的相互作用，这将导致运动的进行或延迟。半径差将随着较大的相位差和较强的抑制而增大。射流，入射壁以及周围的刚性壁和气泡将倾斜于入射方向。 （C）2015 Elsevier Ltd.保留所有权利。

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