A Review on Hydrodynamic Performance and Design of Pump-Jet: Advances, Challenges and Prospects

A pump-jet, which is generally and widely adopted on underwater vehicles for applications from deep sea exploration to mine clearing, consists of a rotor, stator, duct, with the properties high critical speed, propulsion efficiency, great anti-cavitation performance, low radiated noise. The complex interaction flow field between various components degree coupling appendage result in requirements in-depth research hydrodynamic performance application design. Due initial military complicated structure, there scant literature evaluation pump-jet optimal This paper, comprehensive specialized way, summarizes noise characteristics involving cavitation erosion vortices tip-clearance, rotor stator wake field, as well design pump-jet. merits range numerical experimental methods are overviewed method. It also concludes main challenges faced practical proposes vision future research. was found that compact structure internal external make significantly different, leading higher performance. As focus research, interact instabilities such vibration, noise, erosion. effective approaches reduce minimal influence eliminating tip clearance installing sawtooth duct. Advanced technology can achieve acoustic possessing good prospects. Further developments investigation pump-jets multidisciplinary integration fluid dynamics, acoustics, materials, chemistry, bionics should be