期刊
INTERFACE FOCUS
卷 5, 期 5, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rsfs.2015.0024
关键词
bubbly liquid; vapour bubbles; multiphase flow; cavitation
类别
资金
- US National Science Foundation [CBET 1335965]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1335965] Funding Source: National Science Foundation
In addition to the vapour of the liquid, bubbles in cavitating flows usually contain also a certain amount of permanent gas that diffuses out of the liquid as they grow. This paper presents a simplified linear model for the propagation of monochromatic pressure waves in a bubbly liquid with these characteristics. Phase change effects are included in detail, while the gas is assumed to follow a polytropic law. It is shown that even a small amount of permanent gas can have a major effect on the behaviour of the system. Particular attention is paid to the low-frequency range, which is of special concern in flow cavitation. Numerical results for water and liquid oxygen illustrate the implications of the model.
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