Results 11 to 20 of about 593 (134)
Effects of cavitation on the hydrodynamic loading and wake vortex evolution of a pre-swirl pump-jet propulsor [PDF]
Ocean Engineering, 2022 The purpose of this study is to investigate the effects of cavitation on the hydrodynamic loading and wake vortex evolution in a pre-swirl pump-jet propulsor, and also the cavitation-vortex interaction mechanism.
Geng, Linlin +4 more
core +6 more sources
Numerical investigation on hydrodynamic performance of a pre-swirl stator pump-jet propulsor with special emphasis on energy loss mechanism [PDF]
Ocean Engineering, 2023 The objective of this paper is to evaluate the hydrodynamic performance of the newly developed pre-swirl stator pump-jet propulsor (PJP) and to investigate its underlying flow characteristics and energy loss mechanisms.
Shen, Xi +4 more
core +3 more sources
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
doaj +3 more sources
Design, build, test and flight of the world's fastest electric aircraft
IET Electrical Systems in Transportation, Volume 12, Issue 4, Page 380-402, December 2022., 2022 Project ACCEL pushed the limits of energy management, thermal management, and mass saving, while maintaining measured safety for the pilot and crew to ultimately achieve world record‐breaking flights. The blank sheet design of the ESS and powertrain allowed for an appropriately optimised solution, swiftly moving into physical testing allowed for rapid ...
Timothy Bingham +3 more
wiley +1 more source
A Review of Progress and Hydrodynamic Design of Integrated Motor Pump-Jet Propulsion
Applied Sciences, 2022 The integrated motor pump-jet (IMP) propulsion system is a form of modern underwater vehicle propulsion that uses a modular design paradigm. The integrated motor propulsor is a compact construction consisting of a permanent magnet (PM) and a pump-jet ...
Qiao Li +2 more
doaj +1 more source
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 +4 more
doaj +1 more source
Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020 The linear jet propulsion system, unlike pump‐jets which are widely used in underwater bodies, is installed inside a tunnel under the vessel and can be used for high‐speed crafts, tugs, and service boats. However, this system has not received adequate attention by researchers, which is the subject of the current study.
Negin Donyavizadeh +2 more
wiley +1 more source
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 +1 more source
Influence of Various Stator Parameters on the Open-Water Performance of Pump-Jet Propulsion
Journal of Marine Science and Engineering, 2021 In order to improve the hydrodynamic performance of pump-jet propulsion (PJP) when matching stator with the rotor, the RANS method with SST k-ω turbulence model is employed to study the influence of six kinds of stator parameters, which are classified ...
Fuzheng Li +4 more
doaj +1 more source
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 +3 more
doaj +1 more source