Abstract
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
Original language | English |
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Pages (from-to) | 20150024- |
Number of pages | 12 |
Journal | Interface focus |
Volume | 5 |
DOIs | |
Publication status | Published - 2015 |
Keywords
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