Results 1 to 10 of about 629,952 (70)

Prediction of Cavitation Performance over the Pump-Jet Propulsor Using Computational Fluid Dynamics and Hybrid Deep Learning Method

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
doaj   +4 more sources

Effects of Blade Number on the Propulsion and Vortical Structures of Pre-Swirl Stator Pump-Jet Propulsors

Journal of Marine Science and Engineering, 2021
Reducing the noise of the underwater propulsor is gaining more and more attention in the marine industry. The pump-jet propulsor (PJP) is an extraordinary innovation in marine propulsion applications.
Han Li, Qiaogao Huang, Guang Pan, Xinguo Dong, Fuzheng Li   +4 more
doaj   +2 more sources

Comparative analysis of the hydrodynamic performance of pre-swirl stator pump-jet propulsor under different rotational speeds

Xibei Gongye Daxue Xuebao, 2021
The pump-jet propulsor(PJP) performances under various rotational speeds (20~50 r/s) are analyzed for further studying the influence of the Reynolds number (Re) on the hydrodynamics of PJP, before this, the calculation model is verified by using the ...
LI Fuzheng, HUANG Qiaogao, PAN Guang, LI Han   +3 more
doaj   +2 more sources

Numerical Study of Scale Effects of Tip Clearance Flow Field of Pump-Jet Propulsor

Shanghai Jiaotong Daxue xuebao
Due 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
doaj   +2 more sources

Numerical investigation of the hydrodynamics of a submarine with pump-jet propulsor in oblique sailing under wave-current coupling. [PDF]

Sci Rep
The 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.
europepmc   +2 more sources

Experimental evaluation of pumpjet propulsor for an axisymmetric body in wind tunnel [PDF]

International Journal of Naval Architecture and Ocean Engineering, 2010
Design of a Pump Jet Propulsor (PJP) was undertaken for an underwater body with axisymmetric configuration using axial flow compressor design techniques supported by Computational Fluid Dynamics (CFD) analysis for performance prediction.
Ch. Suryanarayana, B. Satyanarayana, K. Ramji, A. Saiju   +3 more
doaj   +2 more sources

Performance evaluation of an underwater body and pumpjet by model testing in cavitation tunnel

International Journal of Naval Architecture and Ocean Engineering, 2010
Experimental investigations were carried out on an Axi-symmetric Body Model fitted with Pump-jet Propulsor (PJP) in the Cavitation Tunnel at Naval Science and Technological Laboratory (NSTL).
Ch. Suryanarayana, B. Satyanarayana, K. Ramji   +2 more
doaj   +1 more source

The hydrodynamic and flow noise generation mechanisms of XLUUV based on a numerical comparative study

Applied Ocean Research
As a key component of an underwater vehicle’s propulsion system, the pump-jet propulsor (PJP) performance is also strongly related to the hull wake. There are mainly rotating hulls represented by an idealized submarine (SUBOFF) and non-rotating hulls ...
Xing He, Qiaogao Huang, Han Li, Jing Liu, Sijie Zheng, Xinming Li   +5 more
doaj   +1 more source

Research on cavitation performance of a pump-jet propulsor and its interaction with vortexes

Results in Engineering
The pump-jet propulsor (PJP) has become a key propulsion system for underwater vehicles due to its high efficiency and low noise characteristics. However, its cavitation issues under high-speed or non-uniform inflow conditions severely threaten its ...
Sijie Zheng, Qiaogao Huang, Han Li, Xing He, Xinming Li, Bo Lu, Xihui Wang, Li Zhou   +7 more
doaj   +1 more source

A Comparative Numerical Study of Hydrodynamic and Acoustic Performance Between Contracted and Loaded Tip Pump-Jet and Conventional Pump-Jet

Journal of Marine Science and Engineering
This study employs a Contracted and Loaded Tip (CLT) propeller to replace the conventional pump-jet rotor, and a comparative analysis is conducted using the Detached Eddy Simulation (DES) method. The reliability of the numerical method is first validated
Yu Zhao, Chao Wang, Cong Sun, Yi-Ming Hu, Hao-Yu Liu, Min Liu   +5 more
doaj   +1 more source