Bjerknes forces between small cavitation bubbles in a strong acoustic held
Bjerknes forces between small cavitation bubbles in a strong acoustic held
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DOI：
10.1103/physreve.56.2924
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发表时间：
1997-09-01
影响因子：
2.4
通讯作者：
Lauterborn, W
中科院分区：
文献类型：
--
作者：
Mettin, R;Akhatov, I;Lauterborn, W
本文用数值方法研究了在强声场（Pa> 1bar，f = 20 kHz）中小空化气泡（R-0 < 10 μ m）之间的相互作用。我们假设球对称和耦合的气泡振荡。我们的结果表明，所产生的二次Bjerknes力的强度，甚至方向有很大的不同，从著名的线性理论的预测。这对于理解和模拟声空化和多泡声致发光中的结构形成过程具有直接的意义。
The mutual interaction between small oscillating cavitation bubbles (R-0 < 10 mu m) in a strong acoustic field (P-a > 1 bar, f = 20 kHz) is investigated numerically. We assume spherical symmetry and a coupling of the bubble oscillations. Our results show that the strength and even the directions of the resulting secondary Bjerknes forces differ considerably from predictions of the well-known linear theory. This is of immediate consequence for understanding and modeling structure formation professes in acoustic cavitation and multi-bubble sonoluminescence.