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工程力学  2013 

气泡群振荡及噪声数值模拟研究

DOI: 10.6052/j.issn.1000-4750.2012.05.0391, PP. 293-298

Keywords: 气泡群,Rayleigh-Plesset方程,辐射噪声,拉格朗日有限体积法,数值模拟

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Abstract:

针对水中气泡群振荡及辐射噪声问题,基于均质混合流模型,考虑气泡动力学作用,建立数学模型;并采用拉格朗日有限体积法,对气泡群振荡过程及辐射噪声进行数值模拟。重点研究了初始气泡半径、含气率及气泡群尺度等对振荡辐射噪声的影响。结果表明,随着初始含气率、气泡群尺度增大,气泡辐射噪声频率逐渐减小、声压幅值逐渐增大即声强增大;初始气泡半径对辐射噪声频率影响较小,但声压幅值随其增大而减小。

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