Research progresses and prospects of vortex cavitation dynamics
Vortex cavitation,a cavitation phenomenon that occurs at the vortex center on propeller blades,often appears first on propeller prototypes.Once it occurs,it will seriously affect the acoustic stealth performance of naval vessels(the noise can increase by more than 10 dB),which limits the fur-ther increase in the critical speed of naval vessels to a great extent.Therefore,it has long been one of the key and challenging topics in the field of cavitation hydrodynamics.In this paper,the characterist-ics of vortex cavitating flow compared with other forms of cavitating flow are briefly introduced first,with tip vortex cavitation as the main research object.The evolution behaviors and flow mechanisms of vortex cavitation inception and development are then expounded.At the same time,the influential factors of vortex cavitation inception and development and their mechanisms are discussed in depth from the perspective of cavitation elements.In addition,the relevant research progress on several key issues,including scale effect and flow control in vortex cavitating flow,is reviewed.The internal causes of vortex cavitation scale effect and the controlling methods and ideas for vortex cavitating flow are systematically sorted.Finally,aimed at the key and tricky problems in the current research field of vortex cavitation,the experimental measurement and numerical simulation technologies used in the fu-ture research on vortex cavitating flow are summarized and outlooked.
CavitationVortex cavitationVortex modelScale effectFlow control
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