Numerical Investigation of a High-Speed Electrical Submersible Pump with Different End Clearances

Zhou, Lian; Wang, Wanhong; Hang, Jianwei; Shi, Weidong; Yan, Hao; Zhu, Yong

doi:10.3390/w12041116

Cited by 42 publications

(27 citation statements)

References 40 publications

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“…To obtain the high-qualified grid and ensure the accuracy of numerical calculation [24,25], this article applied the ANSYS-ICEM 17.0 software to create the hexahedral structured mesh for each part of the calculation domain. The mesh near the wall was refined by the boundary layer to meet the requirement of wall functions [26][27][28]. The overall structured grid of the calculation domain is shown in Figure 2.…”

Section: Meshingmentioning

confidence: 99%

Numerical Calculation of Energy Performance and Transient Characteristics of Centrifugal Pump under Gas-Liquid Two-Phase Condition

Zhou

Han

et al. 2020

Micromachines

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The unstable operation of a centrifugal pump under the gas-liquid two-phase condition seriously affects its performance and reliability. In order to study the gas phase distribution and the unsteady force in an impeller, based on the Euler-Euler heterogeneous flow model, the steady and unsteady numerical calculations of the gas-liquid two-phase full flow field in a centrifugal pump was carried out, and the simulation results were compared with the test data. The results show that the test results are in good agreement with the simulation data, which proves the accuracy of the numerical calculation method. The energy performance curve of the model pump decreases with the increase of the gas content, which illustrates a serious impact on the performance under the part-load operating condition. The results reveal that the high-efficiency-operating range become narrow, as the gas content increases. The gas phase is mainly distributed on the suction surface of the impeller blades. When the gas content reaches a certain value, the gas phase separation occurs. As the inlet gas content increases, the radial force on the impeller blades decreases. The pattern of the pressure pulsation is similar to that under pure water and low gas content conditions, and the number of peaks during the pulsation is equal to the number of the impeller blades. After the gas content reaches a certain value, the pressure fluctuates disorderly and the magnitude and the direction of radial force change frequently, which are detrimental to the operation stability of the pump. The intensity of the pressure pulsations in the impeller flow channel continues to increase in the direction of the flow under pure water conditions. The pressure pulsation intensities at the blade inlet and the volute tongue become more severe with the increase of the gas content.

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Section: Meshingmentioning

confidence: 99%

Numerical Calculation of Energy Performance and Transient Characteristics of Centrifugal Pump under Gas-Liquid Two-Phase Condition

Zhou

Han

et al. 2020

Micromachines

Self Cite

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“…A number of studies have been carried out to analyze the flow pattern in the forebay and pump. At present, scholars mainly carried out a combination of model test and numerical simulation [5][6][7][8]. At the same time, substantial practical engineering problems have been solved using mathematical methods [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Diversion Piers of Lateral Intake Pumping Station Based on Orthogonal Test

Zhou

Zhao

Wang

et al. 2021

Shock and Vibration

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To explore the rectification parameters of the diversion piers optimized for the forebay of the pump station with a lateral angle of 45°, the orthogonal experiment and computational fluid dynamics methods are used to analyze the flow characteristics of the diversion piers under different parameter combinations. The flow pattern in the forebay of the side water inlet is improved. The rectification effect of the diversion piers under 16 schemes is analyzed, considering the length, width, radian, and relative height of the diversion piers. Combined with numerical simulation, a better rectification scheme is provided, and finally, a reasonable range of values for the rectification parameters of the forebay diversion pier of the side 45° bend angle pump station is obtained.

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“…Pump performance has an important influence on realizing an efficient pump operation. Given the extensive application of pumps in different fields, including hydraulic engineering, chemical industry, manufacturing, and environmental protection [1,2], studies on the performance of centrifugal [3,4], axial flow [5], sewage [6], submersible well [7], fully tubular [8], and multistage [9,10] pumps have been conducted using various advanced methods and technologies, such as numerical simulation [11], experimental analysis, and intelligent fault diagnosis [12,13]. Focus should also be placed on the operating process of pump units because, sometimes, actual working conditions may exceed the designed range, which means that pump performance is effectively influenced by external conditions with frequent change.…”

Section: Introductionmentioning

confidence: 99%

Optimal Operation of a Single Unit with an Adjustable Blade in an Interbasin Water Transfer Pumping Station Based on Successive Approximation Discretization for Blade Angle

Gong

Cheng

Che³

et al. 2021

Shock and Vibration

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In the mathematical model of the optimal operation of a single pump unit with a fully adjustable blade in the Chinese South-to-North Water Diversion Project, the decision variable, namely, blade angle, was uniformly dispersed in its feasible region in a fixed step size in consideration of the requirements of the pumping head and matching motor power. 1D dynamic programming was applied to solve the original model. When the obtained blade for each time period was set as the middle reference value and the discrete region of the blade was reduced to two times of the step size in the previous time, the blade angle was correspondingly reduced and dispersed in this new discrete region, thus eliminating unnecessary optimization space. Then, 1D dynamic programming was applied again to optimize the blade angle of the single pump unit further. After a series of successive approximation discretization of the blade angle and corresponding solutions of the obtained mathematical model, the optimization process was considered completed when the given control precision met the requirement. A case study showed that under typical operating conditions, the total cost saving percentage of water pumping quantity reached 0.048%–0.463%, with an average saving rate of 0.192%. The actual total water pumping quantity of the single unit decreased by 2153 m3 on the average. The proposed discretization method exerted a better optimization effect and needed a smaller computational amount compared with traditional one-time uniform discretization in the original feasible region of the blade angle.

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Numerical Investigation of a High-Speed Electrical Submersible Pump with Different End Clearances

Cited by 42 publications

References 40 publications

Numerical Calculation of Energy Performance and Transient Characteristics of Centrifugal Pump under Gas-Liquid Two-Phase Condition

Numerical Calculation of Energy Performance and Transient Characteristics of Centrifugal Pump under Gas-Liquid Two-Phase Condition

Optimal Design of Diversion Piers of Lateral Intake Pumping Station Based on Orthogonal Test

Optimal Operation of a Single Unit with an Adjustable Blade in an Interbasin Water Transfer Pumping Station Based on Successive Approximation Discretization for Blade Angle

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