, Available online , doi: 10.6052/1000-0992-25-012
Abstract:
Hydrodynamic cavitation is a prevalent physical phenomenon in ship propulsion and underwater vehicles. To accurate prediction of cavitation noise prediction and cavitation erosion forecasting, this paper reviews key advances over the past two decades: nuclei and inception mechanisms of cavitation, pressure fluctuations and acoustic propagation across cloud cavitating regions, interaction between cavitation and turbulence, transient impact dynamics during cavity collapse and shock wave generation. Current research status and limitations are discussed through perspectives including phase transition model, multiphase flow simulation methodology, and cavitation-turbulence interactions. A concise overview is presented on multi-scale simulation methodologies for cavitating flows, summarizing recent insights into mixed-phase medium characteristics within cavitating zones and spatiotemporal evolution features of cavity fields derived from meso-scale simulations. For future development in multi-scale modeling and engineering forecasting of cavitating flows, the paper identifies two critical theoretical challenges requiring quantitative characterization: (1) fundamental modeling of vapor-water mixture properties in cavitating regions; and (2) precise representation of spatiotemporal dynamics of cavitating flows.
Wang B L, Liu Y Q. Fundamental mechanism and multiscale simulations of hydrodynamic cavitating flows. Advances in Mechanics, in press. doi: 10.6052/1000-0992-25-012.
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