Open-water Characteristics of Shaftless Pump-jet Thruster

doi:10.3969/j.issn.1000-1093.2021.04.017

Abstract

Abstract: The shaftless pump-jet thruster (SPT) is a new type of integrated motor propulsion (IMP) device, which combines both the characteristics of shaftless propulsion and pump-jet propulsion technologies. In order to study the difference of hydrodynamic performance between SPT and conventional thruster, the computational fluid dynamics (CFD) approach is used to analyze and compare the hydrodynamic performances of SPT, traditional mechanical pump-jet thruster and E779A propeller. The definition of hydrodynamic efficiency of SPT is also discussed. The results show that the open-water efficiency of SPT reaches 0.662, which is lower than that of the conventional propeller. The high-efficiency working range of SPT is rather wider than that of the propeller, which means that SPT is able to work efficiently under more working conditions. Finally, a test bench is designed for the hydrodynamic test of SPT and the verification of the numerical simulation model of SPT above.

Key words: shaftlesspump-jetthruster, hydrodynamicperformance, numericalcalculation, open-waterefficiency, hydrodynamictest

CLC Number:

U664.34

ZHU Hao, JIN Shuanbao, WANG Dong, WANG Gongbao, WEI Yingsan, HU Pengfei, WU Xingyu, HE Shengyang, HU Fengge. Open-water Characteristics of Shaftless Pump-jet Thruster[J]. Acta Armamentarii, 2021, 42(4): 835-841.

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