Results 1 to 10 of about 628,564 (131)
Ocean Engineering, 2021 Abstract There is a strong gap flow exists between the pump rotor tip and the inside of the duct of the pump jet propulsor. To predict the hydrodynamic performance of a pump jet propulsor more accurately, considering the influence of fluid viscosity in the gap area, a gap flow model suitable for a pump jet propulsor is proposed.
Hu Jian +4 more
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Analysis of influence of duct geometrical parameters on pump jet propulsor hydrodynamic performance
Journal of Marine Science and Technology, 2019To analyze the influence of duct geometrical parameters on hydrodynamic performance of pump jet propulsor, this paper presents a surface panel method for predicting performance of pump jet propulsor. And, moreover, a meshing method for blade, based on circular conical surface, is proposed.
Chunyu Guo, Xin Chang
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The hydrodynamic performance analysis of a submarine with new pump-jet propulsor
Ocean Engineering, 2022Wenquan Wang
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Investigation on the Propulsion of a Pump-Jet Propulsor in an Effective Wake
Journal of Fluids Engineering, 2022Abstract The propulsion and vortical flow of a preswirl pump-jet propulsor (PJP) under effective wake conditions are numerically investigated by improved delayed detached eddy simulation. The numerical results agree well with the experiments.
Han Li, Qiaogao Huang, Guang Pan
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Wake instabilities of a pre-swirl stator pump-jet propulsor
Physics of Fluids, 2021The wake of a pump-jet propulsor (PJP) with a pre-swirl stator is investigated using stress-blended eddy simulations. The flow field is analyzed in detail through a systematic comparison of the wake morphology under different loading conditions, allowing the destabilization process and the mechanism of wake instabilities to be inspected.
Han Li +3 more
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The scale effects on the open water performance of a pump-jet propulsor
Journal of Marine Science and Technology, 2021In this work, the scale effects on the open water performance of a pump-jet propulsor (PJP) with pre-swirl stator are considered and implemented based on systematic numerical calculations. With considering the effects of mesh density and time-step size, the unsteady open water performance at the design advance coefficient both in full scale and model ...
Han Li +3 more
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Numerical Design Study of Duct and Stator for a Pump-Jet Propulsor
Volume 6B: Ocean Engineering, 2020Abstract The pump-jet propulsor consists of a duct, a rotor and stators which are installed upstream of the rotor to provide pre-swirl flow or downstream of rotor to absorb the kinetic energy in the flow. The strong interactions between the three components and the vehicle are closely related to their design and exert great effect on ...
Chen-Jun Yang, Xiaoqian Dong, Xueqin Ji
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Design of pump-jet propulsor based on data-driven optimization method
Ocean EngineeringHuachao Dong +2 more
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Numerical investigation of the scale effects of pump-jet propulsor with a pre-swirl stator
Physics of Fluids, 2023In this study, the performance of a pump-jet propulsor (PJP) with pre-swirl stator in open water is numerically investigated. Both full-scale and model-scale configurations are considered. The Reynolds-averaged Navier–Stokes equations and shear stress transport k−ω turbulence model are used in the numerical calculation.
Chunyu Guo +5 more
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