| Citation: | ZHAO Xiao-yu, WU Tian-long, LIN Xing-hua, WU Jian-guo, ZHANG Min-ge. Research on Propeller Cavitation Suppression Based on Pump Jet Rectification Mechanism[J]. Journal of Unmanned Undersea Systems, 2022, 30(1): 68-77. doi: 10.11993/j.issn.2096-3920.2022.01.009
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To prevent cavitation of underwater propellers and improve hydrodynamic performance, based on pump jet rectification mechanism, front and rear stators were installed for conduit propellers. The effects of front and rear stators on cavitation suppression, torque balance, and propulsion efficiency of conduit propellers were studied by computational fluid dynamics simulation analyses and experiments. The results showed that the front stator has an effect on cavitation suppression, and the relative bending has a significant effect on improving the propulsion efficiency, which can balance part of the roll torque. The rear stator has an effect on restraining cavitation in the wake area of the propellers. The section-chord diameter ratio and installation position has the greatest effect on improving the efficiency and torque balance of the propellers. Therefore, the noise level of the propeller can be reduced, cavitation performance can be optimized, and hydrodynamic performance can be improved by installing proper stators before and after the conduit propeller, which provides an important reference for future structural designs of the pump jet propellers.
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