Hydrodynamic study of pumpjet propulsor with a ring at rotor tip and embedded in the groove of the inner wall of the duct

被引：0

作者：

Ye J.-M. ^{[1
]}

Sun D.-P. ^{[1
]}

Wu Y.-R. ^{[1
]}

Zhang X.-F. ^{[1
]}

机构：

[1] Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan

来源：

Chuan Bo Li Xue/Journal of Ship Mechanics | 2023年 / 27卷 / 03期

关键词：

pumpjet propulsor; rotor tip with ring; tip cavitation; tip flow; tip vortex cavitation;

D O I：

10.3969/j.issn.1007-7294.2023.03.002

中图分类号：

学科分类号：

摘要：

In view of the tip clearance cavitation and the tip vortex cavitation caused by tip flow of the pumpjet propulsor, an improved pumpjet propeller with a ring at the rotor tip and embedded in the groove of the inner wall of the duct was designed in this paper. Based on RANS equations and SST k-ω turbulence model, a numerical simulation of the pumpjet propulsor model behind an underwater vehicle with block grid technique was carried out to analyze the control effect of the structure on tip clearance cavitation and tip vortex cavitation, as well as the influence on the fluctuating pressure of the inner wall of the duct and the pumpjet propulsion performance. The results show that the structure can significantly increase the pressure of the rotor tip and the tip vortex core, reduce the tip vortex intensity, inhibit the occurrence of tip clearance cavitation, delay the occurrence of tip vortex cavitation, effectively reduce the pulsating pressure amplitude of the inner wall of duct, and reduce the excitation source causing the vibration of the duct. The structure has little effect on the propulsion efficiency. The research results provide a new way for the vibration and noise reduction of pumpjet propulsors. © 2023 China Ship Scientific Research Center. All rights reserved.

引用

页码：323 / 334

页数：11

共 12 条

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