Abstract

Recently, K. W. Commander and A. Prosperetti [J. Acoust. Soc. Am. 85, 732–746 (1989)] presented a model for the acoustics of bubbly liquids containing a distribution of bubbles sizes. They also analyzed the reflection and transmission of waves normally incident on a layer of bubbly liquid. In this paper the reflection and transmission of oblique plane waves at the interface between a liquid and a bubbly liquid are analyzed. The analysis is based on a variational theory for the acoustics of a bubbly liquid with a distribution of bubble sizes [J. A. Hawkins, Jr. and A. Bedford, J. Acoust. Soc. Am. Suppl. 1 86, S42 (1989)]. It is shown that the reflection and transmission coefficients are relatively insensitive to the bubble size distribution.

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