Numerical Study of Solid Particle Erosion in a Centrifugal Pump for Liquid–Solid Flow

Lai, Fen; Wang, Yu; EI-Shahat, Saeed A.; Li, Guojun; Zhu, Xiangyuan

doi:10.1115/1.4043580

Cited by 30 publications

(17 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The research shows that the erosion speed of the impeller is faster than that of the diffuser, the erosion rate of the front cover is the fastest, followed by the blade and the erosion rate of the back shroud is the slowest. Lai et al (2019) used Euler-Lagrange model to calculate the erosion of centrifugal pump. The results show that under the design condition, the erosion degree of inlet pipe is the least, the erosion degree of impeller is the most serious, and the average erosion rate and maximum erosion rate of impeller hub are the highest.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical simulation of the influence of mixed sand on erosion characteristics of centrifugal pump

Wang¹,

Wang²,

Chen³

et al. 2022

View full text Add to dashboard Cite

PurposeThe purpose of the paper is to predict the erosion rate of the components of centrifugal pump under certain operating condition to identify the maximum erosion area and to discuss the factors affecting them. This helps to optimize design and estimate service life.Design/methodology/approachIn the paper, the Eulerian–Lagrangian approach method coupled with the erosion model to investigate the mixed sand characteristics on erosion characteristics of centrifugal pump flow-through wall. The hydraulic performance and wear characteristics experiment of the pump is used to verify the accuracy of the numerical simulation.FindingsThe blade erosion area mainly occurs near the blade inlet and the trailing edge of the pressure surface, the main erosion area of the impeller back shroud is near the outlet of the flow passage and the main erosion area of the volute is near the tongue and the I section. With the change of the average diameter and density of sand particles, the average erosion rate on different flow-through walls is positively correlated with the average mass concentration to a certain extent. However, for different sand shape factors, there is little correlation between the average erosion rate and the average mass concentration. In addition, compared with other erosion areas, the increase of average sand particle diameter and density has the greatest impact on the total erosion rate of blade pressure surface, while the shape of sand particles has a greater impact on the total erosion rate of each flow-through wall of centrifugal pump.Originality/valueIn this work, according to the characteristics of the mixed distribution of different sand diameters in the Yellow River Basin, the erosion characteristics of centrifugal pumps used in the Yellow River Basin are studied. The numerical calculation method for predicting the wall erosion of centrifugal pump is established and compared with the experimental results. The results can provide reference for optimizing design and increasing service life.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the influence of mixed sand on erosion characteristics of centrifugal pump

Wang¹,

Wang²,

Chen³

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Dong et al (Xing et al, 2009) analyzed the position and process of pump wear through simulation and experiment and found that the impact of pulverized coal with a certain diameter, shape, impact velocity, and invasion angle on the flowing parts would produce pits on the surface of the flowing parts. Lai et al (2019) combined the rebound model and erosion model proposed by Grant and Tabakoff to study the erosion wear problem of solid particles in a solid-liquid twophase centrifugal pump. The results showed that the maximum erosion rate occurred at the impeller hub, and the most serious erosion area of the blade was located at the leading edge between 55 °and 60 °curvature angle.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Particle Diameter, Mass Concentration, and Impeller Material on the Wear Performance of Solid–Liquid Two-Phase Centrifugal Pump Blade

Wang

et al. 2022

Front. Energy Res.

View full text Add to dashboard Cite

A centrifugal pump is an important solid–liquid mixture conveying machinery, which is widely used in mineral mining, water conservancy engineering, and other fields. Solid particles will wear the impeller of the centrifugal pump in the process of transportation, resulting in lower service life of the impeller, especially in the transportation of a high concentration of solid particles. Many scholars use numerical simulation to study the wear of centrifugal pumps, but few efforts have been made in the wear experiment. In this study, the effect of three factors, namely, diameter of solid particles, mass concentration of particles, and material of impellers on the wear of a solid–liquid two-phase centrifugal pump was studied by the wear experiment. The solid particles are SiO2 with irregular shapes, and the diameter ranges are 0.125–0.212 mm, 0.212–0.425 mm, and 0.425–0.710 mm. The mass concentration of solid particles is 15%, 20%, and 30%. The material of impellers is carbon structural steel (Q235), gray cast iron (HT200), and low-alloy high-strength steel (16 Mn). The amount of wear is determined by measuring the thickness of the impeller material before and after wear experiments. The wear morphology of the impeller was observed by using a digital microscope. The results showed that the wear mainly concentrated on the middle and trailing edges of the blade. Impellers of different materials suffer different wear forms, among which the impeller made of HT200 has the best erosion resistance. The increase of solid mass concentration will aggravate the wear of the impeller. The change of particle diameters also has a great influence on impeller wear.

show abstract

“…Within a certain range, the sharpness of the particles has a greater impact on the wall wear performance. Regarding the effect of particle volume concentration on the wear of solid-liquid two-phase flow, the study of Lai et al [15] showed that the change of volume concentration will affect the position of impeller wear. Zhang's simulation and analysis of two-phase flow showed that the abrasion on the pressure side of the impeller of a centrifugal pump is higher than other parts when conveying high-volume concentration particles [16].…”

Section: Introductionmentioning

confidence: 99%

Wear Characteristics of Dense Fine Particles Solid‐Liquid Two‐Phase Fluid Centrifugal Pump with Open Impellers

Wang

Han

Zhou

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

The demand for a centrifugal pump with open impellers for conveying dense fine particles in solid-liquid two-phase flow has increased significantly in actual engineering. The wear of dense fine particles on the centrifugal pump is also exceedingly prominent, which affects the engineering efficiency and economic benefits. The two-phase flow in the open centrifugal pump is three-dimensional and unsteady; the movement of high-volume concentration particles in the centrifugal pump and its mutual influence on the two-phase flow, which results in the calculation of wear, are very intricate. To study the wear characteristics of the centrifugal pump with open impeller with high-volume concentration particles more accurately, numerical simulation and experimental comparison are carried out for the impeller wear of dense fine particles transported by the centrifugal pump with open impellers. Considering the relationship between particles and walls, we used the Fluent 18.0 built-in rebound function and wear model. The RNG k-ε model and the DDPM model were adopted in the numerical simulation, and the numerical solution for centrifugal pump wear was performed under flow rate (9.6 m3·h−1, 12.8 m3·h−1, 16 m3·h−1, and 19.2 m3·h−1), different particle sizes (0.048 mm, 0.106 mm, 0.15 mm, 0.27 mm, and 0.425 mm), and different particle volume concentrations (10%, 15%, 20%, 25%, and 30%), respectively. By comparing the serious wear positions of the impeller, the experimental results correspond well with the numerical simulation, which can be used to predict and study the wear characteristics of the impeller. The results show that the most serious area of blade wear is the middle part of the pressure surface, followed by the middle part of the upper part of the blade. The wear of the impeller is greatly affected by relevant parameters, such as pump flow rate, particle diameter, and particle volume concentration. These results can provide some basis for the wear-resistant design of dense fine particle impeller.

show abstract

Numerical Study of Solid Particle Erosion in a Centrifugal Pump for Liquid–Solid Flow

Cited by 30 publications

References 52 publications

Numerical simulation of the influence of mixed sand on erosion characteristics of centrifugal pump

Numerical simulation of the influence of mixed sand on erosion characteristics of centrifugal pump

Experimental Study on the Influence of Particle Diameter, Mass Concentration, and Impeller Material on the Wear Performance of Solid–Liquid Two-Phase Centrifugal Pump Blade

Wear Characteristics of Dense Fine Particles Solid‐Liquid Two‐Phase Fluid Centrifugal Pump with Open Impellers

Contact Info

Product

Resources

About