Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump

The double-suction centrifugal pumps installed along the Yellow River in China face serious sediment erosion due to the high sediment content which causes the poor operation efficiency of the pump units. The particle motion characteristics and erosion characteristics in a pump under different flow r...

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Main Authors: Xijie Song, Dunzhe Qi, Lijuan Xu, Yubin Shen, Wei Wang, Zhengwei Wang, Yan Liu
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Processes
Subjects:
Online Access:https://www.mdpi.com/2227-9717/9/9/1483
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spelling doaj-7d77a08a14684e329295337d85f0918e2021-09-26T01:04:18ZengMDPI AGProcesses2227-97172021-08-0191483148310.3390/pr9091483Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal PumpXijie Song0Dunzhe Qi1Lijuan Xu2Yubin Shen3Wei Wang4Zhengwei Wang5Yan Liu6State Key Laboratory of Hydro Science and Engineering & Department of Thermal Engineering, Tsinghua University, Beijing 100084, ChinaWater Conservancy Project Construction Center of Ningxia Hui Autonomous Region, Yinchuan 750000, ChinaWater Conservancy Project Construction Center of Ningxia Hui Autonomous Region, Yinchuan 750000, ChinaWater Conservancy Project Construction Center of Ningxia Hui Autonomous Region, Yinchuan 750000, ChinaState Key Laboratory of Hydro Science and Engineering & Department of Thermal Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro Science and Engineering & Department of Thermal Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro Science and Engineering & Department of Thermal Engineering, Tsinghua University, Beijing 100084, ChinaThe double-suction centrifugal pumps installed along the Yellow River in China face serious sediment erosion due to the high sediment content which causes the poor operation efficiency of the pump units. The particle motion characteristics and erosion characteristics in a pump under different flow rates and different particle concentrations were numerically simulated based on the particle track model of solid-liquid two-phase flow. The results show that the flow rate has a significant effect on the particle tracks and the erosion caused by the particles in the impeller. The total erosion rate is positively correlated with the flow rate, and increases with the increase in flow rate. The vortex and secondary flow in the impeller have obvious influence on the particle trajectory, which increases the particle concentration at the trailing edge of the pressure surface and intensifies the impact erosion in this area. The particles carried by the vortex intensifies the local erosion. The particle concentration mainly affects the erosion rate, but has little effect on the erosion position. The influence of flow rate on pump erosion is greater than that of the particle properties. These results provide a reference for optimization of the design of anti-erosion blades of double-suction pumps and the regulation and operation of pumping stations.https://www.mdpi.com/2227-9717/9/9/1483centrifugal pumpimpellererosionparticle trackparticle concentrationflow rate
collection DOAJ
language English
format Article
sources DOAJ
author Xijie Song
Dunzhe Qi
Lijuan Xu
Yubin Shen
Wei Wang
Zhengwei Wang
Yan Liu
spellingShingle Xijie Song
Dunzhe Qi
Lijuan Xu
Yubin Shen
Wei Wang
Zhengwei Wang
Yan Liu
Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump
Processes
centrifugal pump
impeller
erosion
particle track
particle concentration
flow rate
author_facet Xijie Song
Dunzhe Qi
Lijuan Xu
Yubin Shen
Wei Wang
Zhengwei Wang
Yan Liu
author_sort Xijie Song
title Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump
title_short Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump
title_full Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump
title_fullStr Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump
title_full_unstemmed Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump
title_sort numerical simulation prediction of erosion characteristics in a double-suction centrifugal pump
publisher MDPI AG
series Processes
issn 2227-9717
publishDate 2021-08-01
description The double-suction centrifugal pumps installed along the Yellow River in China face serious sediment erosion due to the high sediment content which causes the poor operation efficiency of the pump units. The particle motion characteristics and erosion characteristics in a pump under different flow rates and different particle concentrations were numerically simulated based on the particle track model of solid-liquid two-phase flow. The results show that the flow rate has a significant effect on the particle tracks and the erosion caused by the particles in the impeller. The total erosion rate is positively correlated with the flow rate, and increases with the increase in flow rate. The vortex and secondary flow in the impeller have obvious influence on the particle trajectory, which increases the particle concentration at the trailing edge of the pressure surface and intensifies the impact erosion in this area. The particles carried by the vortex intensifies the local erosion. The particle concentration mainly affects the erosion rate, but has little effect on the erosion position. The influence of flow rate on pump erosion is greater than that of the particle properties. These results provide a reference for optimization of the design of anti-erosion blades of double-suction pumps and the regulation and operation of pumping stations.
topic centrifugal pump
impeller
erosion
particle track
particle concentration
flow rate
url https://www.mdpi.com/2227-9717/9/9/1483
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AT yubinshen numericalsimulationpredictionoferosioncharacteristicsinadoublesuctioncentrifugalpump
AT weiwang numericalsimulationpredictionoferosioncharacteristicsinadoublesuctioncentrifugalpump
AT zhengweiwang numericalsimulationpredictionoferosioncharacteristicsinadoublesuctioncentrifugalpump
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