A new cavitation model considering inter-bubble action

Yazhen Shi, Kai Luo, Xiaopeng Chen, Daijin Li, Laibing Jia

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Abstract

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.
Original languageEnglish
Pages (from-to)566-574
Number of pages9
JournalInternational Journal of Naval Architecture and Ocean Engineering
Volume13
Early online date8 Jun 2021
DOIs
Publication statusE-pub ahead of print - 8 Jun 2021

Keywords

  • bubble-bubble interaction
  • bubble cloud
  • cavitation model

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