Numerical simulation of solid-liquid two-phase flow in a centrifugal pump with different wear blades degree

Hong, Lei; Xiao, Yexiang; Chen, F N; Ahn, Soo-Hwang; Wang, Z W; Gui, Zhonghua; Luo, Yongyao; Zhao, Xiaoran

doi:10.1088/1755-1315/163/1/012027

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…In recent years, many investigations into the solid-liquid two-phase flow field in the centrifugal pump have been undertaken [1][2][3][4][5]. Also, researchers have conducted numerous investigations on the erosion wear of centrifugal pumps by means of different numerical and experimental methods [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. For example, Noon et al [6] simulated the erosion wear of the volute and found that the tongue and downstream of the volute are the most severe regions of wear.…”

Section: Introductionmentioning

confidence: 99%

“…Shen et al [7] studied the effect of particle parameters on erosion wear in the pump, and found that an increase in particle velocity seriously aggravates erosion wear. Lei et al [10] measured the wear of the impeller blade under different flow conditions, stating that the wear on the blade suction side is more severe than the pressure side under lower flow conditions, and the pressure side wear is more severe under higher flow conditions. Luo et al [13] experimentally studied the erosion wear of the impeller blade and reported that the erosion wear is more severe in the blade leading edge, the pressure side and the rear part of the suction side.…”

Section: Introductionmentioning

confidence: 99%

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

Huang

Guo

et al. 2019

Processes

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By using EDEM–Fluent codes and coupling the continuous fluid medium with a solid particle discrete element, the solid–liquid two-phase flow field in a centrifugal pump was simulated under the same inlet conditions of the particle volume fraction and three flow conditions of 0.7Qd, 1.0Qd and 1.3Qd. By introducing the Archard wear model, the wear was calculated, and the wear law was obtained for the pump flow parts such as the leading edge of the impeller blade, blade tip, blade pressure side, blade suction side, impeller shroud, hub and volute. The results demonstrate that the wear of volute is about 70% of the total wear of pump. The wear in the impeller mainly occurs in the blade leading edge, the junction of the hub and the trailing part of the blade pressure side, and the junction of the shroud and the rear part of the blade suction side. Under lower flow conditions, the wear in the impeller shroud is relatively considerable. As the flow rate increases, the wear in the blade pressure side and the hub increases significantly.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Huang

Guo

et al. 2019

Processes

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“…However, the 30 % solid concentration was insufficient to provide references compared with sediment contents in practical operation conditions. Based on the Eulerian-Lagrangian method, Lei et al [15] analysed the influences of abrasion degree on the external properties of a centrifugal pump by using the SST k-ω turbulence model. They found that with the increase in abrasion degree, the head and efficiency of the pump increase under small flow speeds, but decrease under large flow speeds.…”

Section: State Of the Artmentioning

confidence: 99%

Solid-Liquid Flow of Axial Flow Pump in Loop Reactor and Operating Control with Single Invert

Yan¹,

Wang²,

Shi³

et al. 2019

Int. j. simul. model.

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Solid concentration changes may affect the solid-liquid flow of the axial flow pump in the polypropylene loop reactor, accompanied with unstable operations (e.g., axial power fluctuation). The influencing factors and formation mechanisms of axial power fluctuation were analysed. After that, to discuss the influences of energy allowance of the mixture media in the loop reactor, the internal flow status of the pump under different solid volume fractions were compared. Then a head-correction strategy of operating control with single invert was proposed, to smooth the axial power fluctuation of the axial flow pump. Results demonstrate that viscosity of the mixture media is positively related, whereas the head of the axial flow pump is negatively correlated with solid concentration. Besides, head-correction curves can effectively regulate the off-design operation of pump under different solid volume fractions, with the energy allowance and the axial power fluctuation reduced in the loop reactor and the pump. Researches provide important references for the analysis of internal flow status and the solution of axial power fluctuation of the axial flow pump in the polypropylene loop reactor.

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“…They pointed out that the maximum wear happened on the blade leading edge and hub. Lei et al [4] numerically analyzed the wear on blade surfaces by a Eulerian-Lagrangian method with an impact wear model. Results showed that the impact wear of the blade pressure side is more severe than that of the suction side.…”

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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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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Numerical simulation of solid-liquid two-phase flow in a centrifugal pump with different wear blades degree

Cited by 6 publications

References 7 publications

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

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

Solid-Liquid Flow of Axial Flow Pump in Loop Reactor and Operating Control with Single Invert

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

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