Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Huang, Si; Huang, Jiaxing; Guo, Jiawei; Mo, Yushi

doi:10.3390/pr7070431

Cited by 28 publications

(16 citation statements)

References 20 publications

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“…Based on the above overall wear rate results, the relative impact, and abrasive wear amounts, a ratio of each part's wear rate to the overall pump impact wear rate, are presented for different practice conditions in Figures 8 and 9. What stands out in Figure 8 is that the impact wear amount of volute accounts for more than 65% of the overall pump impact wear amount per unit of time, which is generally consistent with the numerical results by Huang et al [6]. Likewise, the abrasive wear amount of volute accounts for more than 71%.…”

Section: Wear Of Flow Partssupporting

confidence: 88%

“…In addition, the effects of particle size, slurry concentration, and particle velocity on the wear rate were investigated. Unlike the numerical methods above, Huang et al [6] applied a Computational Fluid Dynamics (CFD)-Discrete Element Method (DEM) coupling method with an abrasive wear model to study the wear in a centrifugal pump quantitatively. Results claimed that the number of particle collisions with flow parts mainly proportionally followed the wear loss on each part.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of Abrasive and Impact Wear Due to Multi-Shaped Particles in a Centrifugal Pump via CFD-DEM Coupling Method

et al. 2021

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Since solid particles suspended in the fluid can cause wear in centrifugal pumps, intensive attention has been focused on the numerical prediction for the wear of flow parts in centrifugal pumps. However, most numerical studies have focused on only one wear model and a sphere particle model. The impact of particle shape on the wear of flow parts in centrifugal pumps is under-studied, particularly considering abrasive and impact wear simultaneously. In this work, the Computational Fluid Dynamics (CFD)-Discrete Element Method (DEM) coupling method with an abrasive and impact wear prediction model was adopted to study the wear characteristics of a centrifugal pump. Moreover, four regular polyhedron particles and a sphere particle with the same equivalent diameter but different sphericity were mainly analyzed. The results demonstrate that more particles move closer to the blade pressure side in the impeller passage, and particles tend to cluster in specific areas within the volute as sphericity increases. The volute suffers the principal wear erosion no matter what the shapes of particles and wear model are. Both the impact and abrasive wear within the impeller occur primarily on the blade leading edge. The pump’s overall impact wear rate decreases first and then increases with particle sphericity rising, while the pump’s overall abrasive wear rate grows steadily.

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Section: Wear Of Flow Partssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Prediction of Abrasive and Impact Wear Due to Multi-Shaped Particles in a Centrifugal Pump via CFD-DEM Coupling Method

et al. 2021

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“…CFD was computational fluid dynamics, which used the fast computing power of computers to obtain approximate solutions to fluid control equations. Fluent-EDEM coupling [11] is the most common method for dynamic simulation of gassolid two-phase flow [12,13], since the fluid itself does not have a fixed shape, and it is difficult to observe and measure. When a large number of particles collided with each other, the movement and force of each particle were different.…”

Section: Determination Of Edem Simulation Model Parametersmentioning

confidence: 99%

Design and Experimental Study of a Wine Grape Covering Soil-Cleaning Machine with Wind Blowing

Yang

et al. 2021

AgriEngineering

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Due to the cold and dry climate during the winter season of Central Asia, in order to prevent frostbite and vines drying out for wine grapes, the common methods are burying the vines in winter under a thick layer of soil and then cleaning them out in the next spring. The design of existing vine digging machinery is not precise enough and can only remove the outer layer of the soil on both sides and the top. It cannot clean the soil from the central area of the buried vine. Sometimes, the branches and buds get damaged due to uneven driving condition. To solve the problem, an innovative non-contact blower was designed and tested to clean the vine. In this paper, the design specifications and operation parameters of the blower were determined according to the agronomic properties of the grapevines. Fluent-EDEM coupling, that is, with the help of Engineering discrete element method (EDEM) and CFD fluid simulation software Fluent, was the most common method for dynamic simulation of gas-solid two-phase flow. The Fluent-EDEM coupling simulation was used to simulate the dynamics of soil particles under the action of different wind speeds and blowing patterns, with the goal of a high soil cleaning rate. A prototype of the soil cleaning blower was manufactured and tested at the vineyards of Ningxia Yuquanying Farm in China. The results showed that the blower had an operation efficiency of 4669 m2·h−1, with an average soil removal rate of 80%. The efficiency of covering soil cleaning and rattan raising was greatly improved, and the damage rate of the vines, branches and the buds was greatly reduced.

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“…Yin et al (2020) analyzed the liquid-solid two-phase flow characteristics of helical blade pipes based on CFD-DEM coupling method. Huang et al (2019) In this paper, a mathematical model for real catalyst particle was established， and a two-way coupling method based on the CFD and DEM methods was adopted to simulate the liquid-solid two-phase flow in catalyst particles conveying pipeline. The Archard wear model is introduced to explore the distribution law of the wear morphology and maximum wear position of the elbow.…”

Section: Introductionmentioning

confidence: 99%

Study on the Impact Wear Characteristics of Catalyst Particles at 90° Elbow via CFD-DEM Coupling Method

Liu

Zhou

Gao

et al. 2022

JAFM

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In the process of petrochemical production, the catalyst particles in the hydraulic conveying pipeline often cause wear failure accidents due to collisions with wall. Compared with spherical particles, non-spherical particles' trajectory would be different due to its geometric shape, and thereby affecting the flow wear characteristics. In this paper, the shape of catalyst particle model with real aspect ratio was constructed by using multi-cluster method, and a CFD-DEM coupling method was adopted by considering the interaction between particle-particle and particle-wall. The study focuses on the effect of particle shape, radius of curvature and angle of bend in terms of the wear characteristics of liquid-solid two-phase flow. The results indicate that with the increase of the particle aspect ratio, the wear rate and the impact density of particles decrease while the impact velocity increases, the wear area of the elbow mainly distributes in the middle part of the outer wall, and its maximum position appears between 78° and 90° in polar coordinates; With the increase of pipe's curvature radius, the main wear area changes due to the direct collision and the sliding friction of the particles along the pipe wall, and its maximum wear rate shows a downward trend due to the reinforce of buffering effect; With the decrease of bending angle, The main wear area decrease because of the changes in particle flow patterns and it is mainly located in the center of the outer wall.

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Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Cited by 28 publications

References 20 publications

Prediction of Abrasive and Impact Wear Due to Multi-Shaped Particles in a Centrifugal Pump via CFD-DEM Coupling Method

Prediction of Abrasive and Impact Wear Due to Multi-Shaped Particles in a Centrifugal Pump via CFD-DEM Coupling Method

Design and Experimental Study of a Wine Grape Covering Soil-Cleaning Machine with Wind Blowing

Study on the Impact Wear Characteristics of Catalyst Particles at 90° Elbow via CFD-DEM Coupling Method

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