Results 11 to 20 of about 208,857 (298)

Concentrated separation vortex induced by non-uniform suction flow and its role in performance breakdown of a water-jet pump

Advances in Mechanical Engineering, 2017
Many water-jet pumps have a suction velocity profile, which is non-uniform and unfavorable for the pump performance. This article applies the numerical method to investigate the generation mechanism of performance breakdown in a water-jet pump under non ...
Puyu Cao, Yang Wang, Zhang Xiang, Guidong Li, Gang Yin   +4 more
doaj   +2 more sources

Experimental and numerical study on cavitation pulsating pressure of water-jet propulsion axial-flow pump.

PLoS ONE
Cavitation may occur in water-jet pump during operation of water-jet propulsion vessel, and once cavitation occurs, the tip clearance pulsating pressure of the impeller may be intensified, resulting in increased vibration of the water-jet propulsion unit.
Ji-Tao Qiu, Teng-Yan Liu, Xia-Yong Liu, Yuan-Xing Dai, Zong-Long Wang, You-Lin Cai   +5 more
doaj   +2 more sources

Transient Hydrodynamic Characteristics of a High-Speed Axial Flow Water-Jet Pump during Variable Speed Process

Journal of Marine Science and Engineering, 2023
To investigate the transient characteristics of high-speed axial flow water-jet pumps during start-up and emergency acceleration as well as to analyze how different accelerations affect the performance of internal flow, the k–ω turbulence model of the ...
R. Zhu, Wenhao Shi, Gongchang Gan, Huairui Li, Dawei Yang, Y. Duan, Q. Fu   +6 more
semanticscholar   +1 more source

Study of the Operating Characteristics for the High-Speed Water Jet Pump Installed on the Underwater Vehicle with Different Cruising Speeds

Journal of Marine Science and Engineering, 2021
Due to the higher propulsive efficiency, lesser vibration, and better maneuverability, the water jet pump is widely applied to high-speed underwater vehicles.
Yeming Lu, Haoran Liu, Xiaofang Wang, Hui Wang   +3 more
semanticscholar   +1 more source

An experimental study of the effect of the projection ratio and throat-aspect ratio on the efficiency and loss coefficient of a water jet pump

Journal of Mechanical Engineering and Sciences, 2021
This study focuses on the influence of dimensionless geometry parameters on the performance and loss coefficient of the throat and diffuser of the water jet pump apparatus.
Muhammad Penta Helios, W. Asvapoositkul
semanticscholar   +1 more source

Numerical studies for effect of geometrical parameters on water jet pump performance via entropy generation analysis

Journal of Mechanical Engineering and Sciences, 2021
This paper presented an implementation of entropy generation analysis in the main flow field of a water jet pump via the CFD method. This study aimed to identify the inefficient location of energy conversion and to analyse entropy generation sources in ...
Muhammad Penta Helios, W. Asvapoositkul
semanticscholar   +1 more source

Experimental study of shock pressure and erosion characteristics of high‐pressure gas–liquid two‐phase jet: Exploration for improving coalbed methane extraction efficiency

Energy Science & Engineering, 2023
Coalbed methane extraction promotes energy exploitation and alleviates the greenhouse effect. This study aimed to analyze the technical potential of a high‐pressure gas–liquid two‐phase jet in increasing coalbed permeability and promoting coalbed methane
Longyong Shu, Yongpeng Fan, Yunlong Yang, Xin Song, Haijun Guo   +4 more
doaj   +1 more source

Dynamic Characteristics and Effect on Thrust of Jet Tail Vortex Ring for Pump Jet Propulsion

Frontiers in Energy Research, 2022
When a pump is propelled by a propeller, the nozzle flooding of the jet wake area will produce a turbulent quasi-sequence structure and have a certain impact on the outflow field structure and thrust characteristics of the water jet propulsion pump.
Wei Han, Zhixiong Li, Rennian Li, Huimin Feng, Lingbo Nan, Lingbo Nan, Jun Xu, Mingzhen Xiao   +7 more
doaj   +1 more source

PERBAIKAN DAN PEMELIHARAAN MOTOR LISTRIK PENGGERAK WATER JET PUMP DI AREA WASTE HEAT RECOVERY SYSTEM PT CEMINDO GEMILANG

JURAL RISET RUMPUN ILMU TEKNIK, 2022
Electricity is one of the vital needs that is indispensable for all humans and other places, one of which is PT. Cemindo Gemilang, engaged in the cement-producing industry, requires a huge electricity capacity.
Feri Febrian Syah, Endi Permata
semanticscholar   +1 more source

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, Haiting YU, Hongxing HUA, Huiyao LI, Xiuchang HUANG, Xiaoqian DONG   +5 more
doaj   +1 more source