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arXiv 1607.04142physics.flu-dyn
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声空泡云中的定位

Localization in an acoustic cavitation cloud

Boya Miao, Yu An

摘要:

使用一个非线性声波方程的气泡液体结合气泡脉动的方程,我们预测和实验证明的频谱的一个声波在空泡云包括气泡传播的间隙的外观。对于环境半径为100 μm的气泡,计算结果表明该间隙对应于声波局域化现象。对于周围半径为120 μm的气泡,该谱隙与声波的禁带有关。在实验中,我们在苏打水中观察到了频谱中的预测间隙;然而,在自来水中,由于气泡远小于100 μm,因此不存在频谱间隙。

英文摘要:

Using a nonlinear sound wave equation for a bubbly liquid in conjunction with an equation for bubble pulsation, we predict and experimentally demonstrate the appearance of a gap in the frequency spectrum of a sound wave propagating in a cavitation cloud comprising bubbles. For bubbles with an ambient radius of 100 μm, the calculations revealed that this gap corresponds to the phenomenon of sound wave localization. For bubbles with an ambient radius of 120 μm, this spectral gap relates to a forbidden band of the sound wave. In the experiment, we observed the predicted gap in the frequency spectrum in soda water; however, in tap water, no spectral gap was present because the bubbles were much smaller than 100 μm.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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