Journal
INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING
Volume 13, Issue -, Pages 566-574Publisher
SOC NAVAL ARCHITECTS KOREA
DOI: 10.1016/j.ijnaoe.2021.05.005
Keywords
Bubble-bubble interaction; Bubble cloud; Cavitation model
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Funding
- National Natural Science Foundation of China [11872315, 51679202, 51579209]
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A new cavitation model based on the transport equation is proposed in this study, which has been validated through various test simulations and generally results in better predictions both in microscopic and macroscopical cases compared to previous models.
The process of cavitation involves generation, growth, coalescence, and collapse of small bubbles and is tremendously influenced by bubble-bubble interactions. To understand these interactions, a new cavitation model based on the transport equation is proposed herein. The modified Rayleigh-Plesset equation is analyzed to determine the bubble growth rate by assuming equal-sized spherical bubble clouds. The source term in the transport equation is then derived according to the bubble growth rate with the bubble-bubble interaction. The proposed model is validated by various test simulations, including microscopic bubble cloud evolution as well as macroscopical two- and three-dimensional cavitating flows. Compared with previous models, namely the Kunz and Zwart cavitation models, the newly proposed model does not require adjustable parameters and generally results in better predictions both microscopic and macroscopical cases. This model is more physical. (c) 2021 Society of Naval Architects of Korea. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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