Results 11 to 20 of about 628,564 (131)
Experimental study of controlling tip clearance flow in a pump-jet propulsor
Zhongguo Jianchuan Yanjiu, 2023 ObjectiveThis paper aims to suppress the adverse effects of tip clearance flow on the hydrodynamic performance and unsteady excitation force of a pump-jet propulsor. MethodAs for the pre-swirl stator pump-jet propulsor, an annular flexible seal structure
Ruilin HAN +5 more
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Numerical analysis of unsteady hydrodynamic performance of pump-jet propulsor in oblique flow
International Journal of Naval Architecture and Ocean Engineering, 2020 In this study, the SST k−ω turbulence model and the sliding mesh technology based on RANS method have been adopted to simulate the exciting force and hydrodynamic of a pump-jet propulsor in different oblique inflow angle (0°, 10°, 20°, 30°) and different
Chengcheng Qiu +3 more
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Study on Vibration Attenuation Performance of Pump-Jet Propulsor Duct with an Axial Slot Structure
Journal of Marine Science and Engineering, 2023 To reduce the structural vibration of the duct structure in pump-jet propulsors (PJPs) and lower the induced vibration noise, this study learned from the “processor box” in an aero-engine and set a certain number of axial slots in the PJP.
Lin Ke, Jinming Ye, Xiaoyu Zou
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Xibei Gongye Daxue XuebaoTo address the difficulty of obtaining high fidelity flow field information for unmanned underwater vehicle pump-jet propulsor, the accuracy of super-resolution flow field reconstruction by using a hybrid down-sampling skip connection/multi-scale ...
ZHANG Yong +4 more
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Numerical analysis of unsteady forces in a pump-jet propulsor due to dynamic tip-clearance changes [PDF]
Zhongguo Jianchuan YanjiuObjectiveThis study aims to investigate the effects of dynamic variations in rotor tip-clearance on the unsteady forces of a pump-jet propulsor, while analyzing the role of a flexible isolation system in influencing the excitation characteristics of the ...
Huiyao LI +5 more
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Comprehensive Research on the Effects of Different Launch Conditions on Pump-jet Propulsor Performance [PDF]
Journal of Applied Fluid MechanicsThis paper compares the cavitation of a pump-jet propulsor under different launch conditions and discusses the effects of cavitation on the performance and noise of the pump-jet propulsor rotor blade.
Q. Fu, Y. Duan, W. Shi, H. Li, R. Zhu
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Journal of Marine Science and Engineering, 2022 The cavitation performance of an oblique flow field is different from that under a pure axial flow field. This study analyzed the hydrodynamic performance, bearing force, and tip clearance flow field under different rotating speeds and different ...
Chengcheng Qiu, Qiaogao Huang, Guang Pan
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Effect of Hub-to-tip Ratio on Performance of High Speed Pump-jet Propulsor for Undersea Vehicle
水下无人系统学报To investigate the influence of the hub-to-tip ratio on the high-speed pump-jet propulsors of undersea vehicles, this study took an impeller with specific speed of 1 920 as the research object and conducted numerical calculation, performance result ...
Gongchang GAN
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Numerical investigation of the hydrodynamics of a submarine with pump-jet propulsor in oblique sailing under wave-current coupling [PDF]
Scientific ReportsThe influence of surface waves on the hydrodynamic performance of a submarine could be significant when a submarine is in drift process near the water surface.
Xin-ran Li, Yun Ding
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Journal of Marine Science and EngineeringThis study investigated the impact of different load distribution ratios between two rotors on the unsteady performance of dual-stage pump-jet propulsors using Computational Fluid Dynamics (CFDs) and experimental methods. The Shear Stress Transport (SST)
Jiansheng Zhang +6 more
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