Results 21 to 30 of about 236,334 (314)

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

open access: yesMathematics, 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   +4 more
doaj   +1 more source

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

open access: yesEnergies, 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   +6 more
doaj   +1 more source

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

open access: yesPolish 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   +5 more
doaj   +1 more source

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

open access: yesJournal 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   +6 more
doaj   +1 more source

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

open access: yesJournal 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

Investigation of Unsteady Pressure Pulsation in New Type Dishwasher Pump with Special Double Tongue Volute

open access: yesShock 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   +5 more
doaj   +1 more source

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

open access: yesApplied 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   +6 more
doaj   +1 more source

Enteral feeding pumps: efficacy, safety, and patient acceptability

open access: yes, 2014
Helen White, Linsey King Nutrition and Dietetic Group, School of Health and Wellbeing, Faculty Health and Social Science, Leeds Metropolitan University, Leeds, United Kingdom Abstract: Enteral feeding is a long established practice across pediatric and ...
White H, King L, White, H, King, L
core   +1 more source

Deep Learning-Based Intelligent Fault Diagnosis Methods Toward Rotating Machinery

open access: yesIEEE 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

Influence of Spanwise Distribution of Impeller Exit Circulation on Optimization Results of Mixed Flow Pump

open access: yesApplied Sciences, 2021
The spanwise distribution of impeller exit circulation (SDIEC) has an important influence on the performance of the impeller. To quantitatively study the influence of SDIEC on optimization results, a comprehensive optimization system composed of the ...
Mengcheng Wang   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy