Results 21 to 30 of about 163,806 (264)

The Cavitation Nuclei Transient Characteristics of Lennard-Jones Fluid in Cavitation Inception

Polish Maritime Research, 2018
In the field of ocean engineering, cavitation is widespread, for the study of cavitation nuclei transient characteristics in cavitation inception, we applied theoretical analysis and molecular dynamics (MD) simulation to study Lennard-Jones (L-J) fluid ...
Qiang Fu, Benying Zhang, Yuanyuan Zhao, Rongsheng Zhu, Gang Liu, Mengyuan Li   +5 more
doaj   +1 more source

Research on Vertical SEC Centrifugal Pump Multi-Fault Diagnosis Based on WPT–SVM

Energies, 2023
To diagnose common failures in vertical Essential Service Water Pumps (SEC), a method combining the wavelet packet transform (WPT) and the support vector machine (SVM) was adopted.
Rongsheng Zhu, Yunpeng Li, Qian Huang, Sihan Li, Xinyu Zhang, Huairui Li, Qiang Fu   +6 more
doaj   +1 more source

Comprehensive Research on the Effects of Different Launch Conditions on Pump-jet Propulsor Performance [PDF]

Journal of Applied Fluid Mechanics
This 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
doaj   +1 more source

Research on the Hydrodynamic Noise Characteristics of a Mixed-Flow Pump

Journal of Marine Science and Engineering, 2023
This study presents a comprehensive investigation of the internal noise characteristics of a mixed-flow pump by combining computational fluid dynamics (CFD) and computational acoustics. The turbulent flow field of the pump is simulated using the unsteady
Qiaoyue Yang, Wei Li, Leilei Ji, Weidong Shi, Wei Pu, Yu Long, Xinrui He   +6 more
doaj   +1 more source

Improvement of Internal Flow Performance of a Centrifugal Pump-As-Turbine (PAT) by Impeller Geometric Optimization

Mathematics, 2020
Rotor-stator interaction (RSI) in the centrifugal pump-as-turbine (PAT) is a significant source of high amplitude of the pressure pulsation and the flow-induced vibration, which is detrimental to the stable operation of PAT. It is therefore imperative to
Jian Xu, Longyan Wang, Stephen Ntiri Asomani, Wei Luo, Rong Lu   +4 more
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Investigation of Unsteady Pressure Pulsation in New Type Dishwasher Pump with Special Double Tongue Volute

Shock and Vibration, 2022
Through numerical simulations, this work analyzes the unsteady pressure pulsation characteristics in new type of dishwasher pump with double tongue volute and single tongue volute, under volute static and rotation conditions.
Jinfeng Zhang, Yilei Zhu, Yalin Li, Ping Huang, Hui Xu, Feng Zheng   +5 more
doaj   +1 more source

Dynamic Analysis of Cavitation Tip Vortex of Pump-Jet Propeller Based on DES

Applied Sciences, 2020
When a pump-jet propeller rotates at high speeds, a tip vortex is usually generated in the tip clearance region. This vortex interacts with the main channel fluid flow leading to the main energy loss of the rotor system.
Jianping Yuan, Yang Chen, Longyan Wang, Yanxia Fu, Yunkai Zhou, Jian Xu, Rong Lu   +6 more
doaj   +1 more source

Deep Learning-Based Intelligent Fault Diagnosis Methods Toward Rotating Machinery

IEEE Access, 2020
Fault diagnosis of rotating machinery plays a significant role in the industrial production and engineering field. Owing to the drawbacks of traditional fault diagnosis methods, such as heavily dependence on human knowledge and professional experience ...
Shengnan Tang, Shouqi Yuan, Yong Zhu
doaj   +1 more source

Effect of Induced Wheel and Impeller Inlet Diameter on the Hydrodynamic Performance of High-speed Centrifugal Pumps [PDF]

Journal of Applied Fluid Mechanics
The high-speed centrifugal pump plays a crucial role in fields such as aerospace and petrochemical industries, owing to its characteristics of elevated rotational speed and high head.
Y. Long, H. Wang, R. Wang, B. He, Q. Fu, R. Zhu   +5 more
doaj   +1 more source

Hydraulic Optimization of Two-Way Counter-rotating Axial Flow Pump Turbine

Frontiers in Energy Research, 2020
The two-way counter-rotation technology is mainly applied to the tidal power station. In this paper, the hydrodynamic optimization of the two-way counter-rotating axial-flow pump turbine is carried out.
Wang Xiuli, Lin Bin, Li Yang, Zhang Yan, Zhu Rongsheng, Long Yun, Fu Qiang   +6 more
doaj   +1 more source