To address the issue of performance degradation in high-speed centrifugal pumps due to cavi-tation,a three-dimensional model of a high-speed centrifugal pump was established based on the RNG κ-ε tur-bulence model and the Zwart-Gerber-belamri cavitation model.Holes were made in the front and rear shrouds of the impeller.CFX was used to perform numerical calculations and simulations of the flow field in the perfo-rated impeller high-speed centrifugal pump under different cavitation numbers.The results show that the im-peller opening can effectively reduce the pressure of the flow field,reduce the volume fraction of bubbles when cavitation occurs,alleviate the blockage of the bubble flow channel when cavitation occurs,and effectively im-prove the cavitation performance of the high-speed centrifugal pump.It provides a reference for further re-search on improving the cavitation performance of centrifugal pumps.
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