Results 1 to 10 of about 593 (134)
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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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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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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Numerical study of the wake evolution behind a shaftless pump-jet propulsor
Applied Ocean ResearchTo identify the evolution of the vortices hidden in the wake behind a shaft-less pump-jet propulsor, the delayed detached eddy simulation is performed on a computational domain comprising 22.8 million cells to analyze the wake evolution behind a ...
Peng Li +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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Numerical investigation of the hydrodynamics of a submarine with pump-jet propulsor in oblique sailing under wave-current coupling. [PDF]
Sci RepThe 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.
Li XR, Ding Y.
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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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Applied SciencesThe potential value of the new type of vector propulsor in submarine movement has been confirmed. However, some key mechanical issues are not fully understood, especially the hydrodynamic characteristics during oblique motion.
Tongqing Xue +5 more
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Numerical Study of Scale Effects of Tip Clearance Flow Field of Pump-Jet Propulsor
Shanghai Jiaotong Daxue xuebaoDue to the tip clearance of the pump-jet propulsor (PJP), the flow field characteristics in the PJP are more complicated. To explore the influence of scale effects on the tip clearance flow field of PJP, the unsteady Reynolds-averaged Navier-Stokes ...
YANG Chun, GUO Chunyu, SUN Cong, WANG Chao, YUE Qihui
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4D Printing of Humidity‐Driven Seed Inspired Soft Robots
Advanced Science, Volume 10, Issue 9, March 24, 2023., 2023 The internal structure and biomechanics of Pelargonium appendiculatum (L.f.) wild seeds are investigated to develop a model for the design and 4D printing of a soft robot. The robot mimics the movement and performances of the natural seed. Driven by environmental humidity, the artificial seed can explore a sample soil, adapting its morphology to ...
Luca Cecchini +5 more
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