A Theoretical Model for the Asymmetric Transmission of Powerful Acoustic Wave in Double-Layer Liquids
Xun Wang1 , Wei-Zhong Chen1** , Qi Wang1 , Jin-Fu Liang2
1 Key Laboratory of Modern Acoustics (Ministry of Education), Institute of Acoustics, Nanjing University, Nanjing 2100932 School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001
Abstract ：A theoretical model which couples the oscillation of cavitation bubbles with the equation of an acoustic wave is utilized to describe the sound fields in double-layer liquids, which can be used to realize the asymmetric transmission of acoustic waves. Numerical simulations show that the asymmetry is related to the properties of the host liquids and the input acoustic wave. Asymmetry can be enhanced if the maximum number density or the ambient radius of the cavitation bubbles in the low cavitation threshold liquid increases. Moreover, the direction of rectification will be reversed if the amplitude of the input acoustic wave becomes high enough.
收稿日期: 2017-05-12
出版日期: 2017-07-22
:
43.25.+y
(Nonlinear acoustics)
43.35.+d
(Ultrasonics, quantum acoustics, and physical effects of sound)
47.55.dd
(Bubble dynamics)
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2017, Vol. 34 
