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Journal articles on the topic 'Centrifugal-vortex pump'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Makarov, V., V. Potapov, E. Churakov, and N. Makarov. "Ways to improve the energy efficiency of shaft centrifugal pumps." Transbaikal State University Journal 27, no. 5 (2021): 26–35. http://dx.doi.org/10.21209/2227-9245-2021-27-5-26-35.

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The increase in the efficiency and competitiveness of mining enterprises is limited by the insufficient efficiency and adaptability of the currently used centrifugal pumps. Using the vortex theory of turbomachines, Theorems Stokes’ and Helmholtz, the principles of hydrodynamic analogy and superpositions, a mathematical model of the hydrodynamic calculation of centrifugal pumps with adaptive vortex sources integrated into the impeller blades is obtained. A significant influence on the hydrodynamic parameters and adaptability of pumps of the energy characteristics of adaptive vortex sources has

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2

Dickinson, Timothy A., Jack Prichard, and Faye Rieckens. "A Comparison of the Benefits of Roller Pump Versus Constrained Vortex Pump in Adult Open-Heart Operations Utilizing Outcomes Research." Journal of ExtraCorporeal Technology 26, no. 3 (1994): 108–13. http://dx.doi.org/10.1051/ject/1994263108.

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The purpose of this study was to compare roller pump and centrifugal pump technologies in routine adult open-heart operations to demonstrate the usefulness of applying a proven method of uniform risk stratification (outcomes research). Objective and readily available preoperative patient data was collected retrospectively on 102 non-randomized and consecutive adult openheart operations. Group 1 consisted of 51 adult open-heart operations utilizing a roller pump for arterial blood perfusion. Group 2 consisted of 51 adult open-heart procedures utilizing a constrained vortex pump for arterial blo

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3

Pochylý, František, Pavel Jandourek, Simona Fialová, and Pavel Rudolf. "Analysis of the inlet recirculation in centrifugal pumps." IOP Conference Series: Earth and Environmental Science 1483, no. 1 (2025): 012042. https://doi.org/10.1088/1755-1315/1483/1/012042.

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Abstract Conference article is focused on theoretical and practical deepening of knowledge associated with inlet recirculation in centrifugal pumps, especially with higher specific speed pumps. The conditions of instability of the vortex structures and the causes of recirculation are studied theoretically and experimentally. The methodology is based on the analysis of the Navier-Stokes equations for an incompressible fluid depending on the boundary conditions. The result of the theoretical analysis is the design of various types of dampers in the suction part of the pump, to limit the occurren

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4

Pan, Chong Chao, Zheng Qian Feng, Peng Cheng Li, and Hai Hong Chen. "The Research on Energy Saving of Pump Fluid Conveying System." Advanced Materials Research 860-863 (December 2013): 704–8. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.704.

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In order to determine the energy saving effect of the pump system after the energy saving technical reconstruction project implementation, this paper mainly researches on how to measure and verify the pump system energy saving after the energy saving technical reconstruction project implementation for AC drive (drag) centrifugal, mixed flow, axial flow, vortex pumps and reciprocating pumps. This paper also puts forward the related definitions, boundaries, methods, technical requirements of measurement and verification, etc.

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5

Tu, Yongsha, Xueying Zhao, Lifeng Lu, et al. "Flow Characteristics and Pressure Pulsation Analysis of Cavitation Induced in a Double-Volute Centrifugal Pump." Water 17, no. 3 (2025): 445. https://doi.org/10.3390/w17030445.

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Cavitation is a complex multiphase flow phenomenon, and the generation of transient phase transitions between liquid and vapor during cavitation development leads to multi-scale vortex motion. The transient cavitation dynamics and centrifugal pump’s rotor–stator interaction will induce pressure fluctuations in the impeller and the volute fluid of the centrifugal pump, resulting in a complex flow field structure. Based on the Schnerr–Sauer cavitation model and SST k-ω turbulence model, this paper studies the transient characteristics of the cavitation-induced unsteady flow in the centrifugal pu

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6

Великанов, Н. Л., and В. А. Наумов. "The criterion of energy efficiency in the design of the ship's water supply system." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII)</msg> 1, no. 4(62) (2023): 271–76. http://dx.doi.org/10.37220/mit.2023.62.4.032.

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Рассмотрено судно проекта RDB 63.01, разработанного проектно-конструкторским бюро «Стапель». Тип судна – самоходное сухогрузное судно. Назначение судна – перевозка минерально-строительных материалов, тарно-штучных, навалочных и генеральных грузов, включая зерно и опасные грузы (уголь и сера). В системе водоснабжения судна использован вихревой насос. Вихревые насосы имеют ряд выгодных преимуществ, по сравнению с центробежными насосами. Среди них меньшая масса и размеры, при одинаковых с центробежными насосами величинах подачи и напора. Долгое время именно это преимущество способствовало использ

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7

Ali-Hikmat Ahmadov, Ali-Hikmat Ahmadov, and Musayev Anar Musayev Anar. "INVESTIGATION OF THE ENERGY CHARACTERISTICS OF CENTRIFUGAL PUMPS." ETM - Equipment, Technologies, Materials 14, no. 02 (2023): 77–83. http://dx.doi.org/10.36962/etm14022023-77.

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A hydraulic device that is used to suck up liquid, move it under pressure or pump it, is called a pump. As a rule, any movement of a liquid by similar aggregates is carried out due to the transfer of potential or kinetic energy to it. Depending on the technical indicators, different types of pumps are used. At the same time, they differ in efficiency, power, volumes of fluid pumped per unit time, maximum head and resulting pressure. The most used group of pumps are vane pumps. Their distinctive feature is the impeller rotating in a fixed housing, equipped with blades. Depending on the warehous

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8

Dong, Wei, Diyi Chen, Jian Sun, Yan Dong, Zhenbiao Yang, and Junle Yan. "Influence of Balance Hole Diameter on Leakage Flow of the Balance Chamber in a Centrifugal Pump." Shock and Vibration 2021 (February 5, 2021): 1–11. http://dx.doi.org/10.1155/2021/8860493.

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The balancing holes in centrifugal pumps with seals mounted in both suction and discharge sides are one of the approaches used by pump manufacturers to reduce the axial thrust. The balance hole diameter directly affects the axial force of the centrifugal pump. The flow characteristics in the balance chamber are closely related to the balance hole diameter. However, research is not very clear on the internal flow of the balanced chamber, due to the small axial and radial sizes and the complicated flow conditions in the chamber. In this paper, we analyzed the influence of the balance hole diamet

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9

Cui, Baoling, Chenliang Zhang, Yuliang Zhang, and Zuchao Zhu. "Influence of Cutting Angle of Blade Trailing Edge on Unsteady Flow in a Centrifugal Pump Under Off-Design Conditions." Applied Sciences 10, no. 2 (2020): 580. http://dx.doi.org/10.3390/app10020580.

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The parameters of blade trailing edge have an important influence on the performance of centrifugal pump and internal unstable flow. In this study, the influences of cutting angles of blade trailing edge on unstable pressure pulsation and unstable flow structure are investigated using a centrifugal pump under off-design conditions through large eddy simulation. Three typical blade trailing edges, namely, original trailing edge (OTE), 15° cutting angle of blade trailing edge (OBS15) and 30° cutting angle of blade trailing edge (OBS30), are analysed. Results show that the cutting angle of blade

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10

Si, Qiaorui, Gérard Bois, Minquan Liao, Haoyang Zhang, Qianglei Cui, and Shouqi Yuan. "A Comparative Study on Centrifugal Pump Designs and Two-Phase Flow Characteristic under Inlet Gas Entrainment Conditions." Energies 13, no. 1 (2019): 65. http://dx.doi.org/10.3390/en13010065.

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Capability for handling entrained gas is an important design consideration for centrifugal pumps used in petroleum, chemistry, nuclear applications. An experimental evaluation on their two phase performance is presented for two centrifugal pumps working under air-water mixture fluid conditions. The geometries of the two pumps are designed for the same flow rate and shut off head coefficient with the same impeller rotational speed. Overal pump performance and unsteady pressure pulsation information are obtained at different rotational speeds combined with various inlet air void fractions (α0) u

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11

Si, Qiaorui, Qianglei Cui, Keyu Zhang, Jianping Yuan, and Gérard Bois. "Investigation on centrifugal pump performance degradation under air-water inlet two-phase flow conditions." La Houille Blanche, no. 3 (June 2018): 41–48. http://dx.doi.org/10.1051/lhb/2018031.

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In order to study the flow characteristics of centrifugal pumps when transporting the gas-liquid mixture, water and air were chosen as the working medium. Both numerical simulation and experimental tests were conducted on a centrifugal pump under different conditions of inlet air volume fraction (IAVF). The calculation used URANS k-epsilon turbulence model combined with the Euler-Euler inhomogeneous two-phase model. The air distribution and velocity streamline inside the impeller were obtained to discuss the flow characteristics of the pump. The results show that air concentration is high at t

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12

Zhao, Jiantao, Ji Pei, Jianping Yuan, and Wenjie Wang. "Numerical investigation of vortex structure and unsteady evolution in multi-stage double-suction centrifugal pump." Journal of Physics: Conference Series 2707, no. 1 (2024): 012017. http://dx.doi.org/10.1088/1742-6596/2707/1/012017.

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Abstract Multi-stage double-suction centrifugal pump is constructed to handle situations with large flow rates and high head. However, due to the complex internal flow structure, the pump can experience hydraulic excitation caused by the presence of numerous vortical structures. Such excitation can lead to unstable pump operation and increased energy losses. In this study, we aim to analyze the multi-stage double-suction centrifugal pump by combining numerical simulation using detached eddy simulation (DES) and experiments to accurately capture the vortical structure and elucidate the mechanis

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13

Meng, Qinghui, Xi Shen, Xutao Zhao, Gang Yang, and Desheng Zhang. "Numerical Investigation on Cavitation Vortex Dynamics of a Centrifugal Pump Based on Vorticity Transport Method." Journal of Marine Science and Engineering 11, no. 7 (2023): 1424. http://dx.doi.org/10.3390/jmse11071424.

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Cavitation is one of the most important aspects of the stable and safe operation of a centrifugal pump. To examine the dynamics of cavitation vortex in a centrifugal pump, the cavitating flow is investigated by using the modified shear stress transport (SST) k-ω turbulence model with the Zwart cavitation model. The numerical results are confirmed by comparing them with those obtained from experimental tests. The results show that there is a critical cavitation number of σc at each flow rate condition. As the cavitation number σ exceeds σc, the pump head remains stable. Conversely, the head rap

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14

Song, Wen-wu, Li-chao Wei, Jie Fu, Jian-wei Shi, Xiu-xin Yang, and Qian-yu Xu. "Analysis and control of flow at suction connection in high-speed centrifugal pump." Advances in Mechanical Engineering 9, no. 1 (2017): 168781401668529. http://dx.doi.org/10.1177/1687814016685293.

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The backflow vortexes at the suction connection in high-speed centrifugal pumps have negative effect on the flow field. Setting an orifice plate in front of the inducer is able to decrease the negative effect caused by backflow vortexes. The traditional plate is able to partially control the backflow vortexes, but a small part of the vortex is still in the inlet and the inducer. Four new types of orifice plates were created, and the control effects on backflow vortexes were analyzed. The ANSYS-CFX software was used to numerically simulate a high-speed centrifugal pump. The variations of stream

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15

Rogovyi, Andrii, Qingsheng Ren, Xingrong Wang, Artem Neskorozhenyi, and Yevhen Timchenko. "IMPROVEMENT OF DIMENSIONS AND CHARACTERISTICS OF THE VORTEX CHAMBER PUMP FOR COAL-WATER MEDIUM DELIVERING." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 2 (January 24, 2024): 16–23. http://dx.doi.org/10.20998/2411-3441.2023.2.02.

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The vortex chamber pump combines the positive characteristics of the centrifugal pump and the jet pump, and its efficiency is much higher than that of the classical jet pump. This pump differs from the vortex injector by having the pump flow into the tangential outlet channel, which is not available in the vortex injector. The traditional bulk material pump in many aspects has certain shortcomings, these shortcomings limit its application scope and use effect, the traditional bulk material pumps mechanical parts and seals rapidly wear, resulting in short service life. Based on solving the Reyn

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16

CHEN, Xuan, Jia LI, Bin LI, Xueqi ZOU, and Feichao CAI. "The multi-stage adding strategy on Kriging and applied to cavitation optimization of centrifugal impeller." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 42, no. 3 (2024): 467–76. http://dx.doi.org/10.1051/jnwpu/20244230467.

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In order to realize the intelligent optimization design of cavitation performance of fuel centrifugal pump, a multi-stage active learning adding strategy based on Kriging is proposed. The focus is to establish the three-stage adding strategy by using MSE, EI and CV, and clarify the switching criteria for each stage. Based on the test functions such as one-dimensional function and multi-dimensional function, it is compared with the single-stage adding strategy to verify the effectiveness of the proposed strategy. Furthermore, for a certain type of fuel centrifugal pump, the optimization applica

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17

Yang, Yang, Ling Zhou, Hongtao Zhou, et al. "Optimal Design of Slit Impeller for Low Specific Speed Centrifugal Pump Based on Orthogonal Test." Journal of Marine Science and Engineering 9, no. 2 (2021): 121. http://dx.doi.org/10.3390/jmse9020121.

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Marine centrifugal pumps are mostly used on board ship, for transferring liquid from one point to another. Based on the combination of orthogonal testing and numerical simulation, this paper optimizes the structure of a drainage trough for a typical low-specific speed centrifugal pump, determines the priority of the various geometric factors of the drainage trough on the pump performance, and obtains the optimal impeller drainage trough scheme. The influence of drainage tank structure on the internal flow of a low-specific speed centrifugal pump is also analyzed. First, based on the experiment

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18

Churakov, Evgeny O., Vladimir N. Makarov, Nikolay V. Makarov, and Anna M. Belskikh. "Stages of Technical Improvement of Mine Drainage Centrifugal Pumps." Transbaikal State University Journal 30, no. 1 (2024): 81–89. http://dx.doi.org/10.21209/2227-9245-2024-30-1-81-89.

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The article shows the timeliness of an in-depth analysis of changes in the main hydrodynamic parameters of centrifugal pumps for the main drainage of mines, depending on their depth and time history, as well as for processing plants of various technological processes. The requirements for the characteristics of drainage pumping equipment, determined by modern needs for mining in the conditions of technical and economic possibilities for mining, taking into account the geological features of the most accessible deposits explored and accepted for development are determined up by the authors. The

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19

Mihalić, Tihomir, Zvonimir Guzović, and Andrej Predin. "CFD flow analysis in the centrifugal vortex pump." International Journal of Numerical Methods for Heat & Fluid Flow 24, no. 3 (2014): 545–62. http://dx.doi.org/10.1108/hff-05-2012-0124.

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Purpose – Aging of the oil wells leads to a decrease in reservoir pressure and also to an increase in the water, gas and abrasive particles content. Therefore, there is a need for the oil pumps exploitation characteristics improvements. This paper aims to generate a valuable numerical model which will provide a useful tool to study various cases. Design/methodology/approach – Computational fluid dynamics (CFD) analysis of the generation of so-called coherent structures of eddies and turbulence in the peripheral area of the vortex rotor mounted at the back side of centrifugal rotor was undertak

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20

Bobkov, Alexandr, and Irina Katalazhnova. "Analysis of the hydrodynamic causes of thrombosis and hemolysis in the centrifugal pump of the artificial blood supply system." BIO Web of Conferences 130 (2024): 04006. http://dx.doi.org/10.1051/bioconf/202413004006.

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The article is devoted to the analysis of the hydrodynamic causes of complications of the use of centrifugal pumps in artificial circulation systems. In the treatment of cardiovascular diseases, rotary pumps began to be used: centrifugal, axial and disk. Of the three types of rotary pumps, centrifugal pumps have the highest power density due to the use of centrifugal force. Statistics show that the greatest blood damage in the form of thrombosis and hemolysis is observed in these pumps. The article concludes that the main hydrodynamic cause of thrombosis and hemolysis is the force field formed

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21

Yang, Zihan, Ze Chen, Yong Liu, Hongbo Zhang, Shilin Li, and Jingyue Zhang. "Design and Structure Optimization of a Spiral Centrifugal Pump for Sludge Transportation." Advances in Computer and Materials Scienc Research 2, no. 1 (2025): 261. https://doi.org/10.70114/acmsr.2025.2.1.p261.

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At present, the head of the existing spiral centrifugal pump in China is generally low, which can not meet the transportation requirements of sludge and other high viscosity medium. A new type of spiral centrifugal pump was designed, and its structure was optimized for the transport of high viscosity sludge. Through the numerical simulation of the internal flow, the flow and pressurization laws in the pump are revealed, and the vortex loss near the tail of the blade and the outlet pipe is found. The basic design requirements were achieved. Then the structure of spiral centrifugal pump was furt

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22

Zhao, Zhizhou, Wenwu Song, Yongxin Jin, and Lei He. "Numerical study on flow stall and kinetic energy conversion of low-specific-speed centrifugal pump." Physics of Fluids 35, no. 4 (2023): 044104. http://dx.doi.org/10.1063/5.0143316.

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Stall is a common phenomenon in centrifugal pumps under low-flow conditions; it has a significant impact on fatigue and can even damage mechanical structural components. Computational fluid dynamics was used to perform high-precision numerical calculations to describe multiple operating conditions in the computational domain. The accuracy of these numerical simulations was verified by comparing the results with the single-flow channel flow patterns captured by time-resolved particle image velocimetry and the external characteristics of the centrifugal pump. On this basis, the unsteady spatiote

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23

Lin, Peifeng, Yongzheng Li, Wenbin Xu, Hui Chen, and Zuchao Zhu. "Numerical Study on the Influence of Inlet Guide Vanes on the Internal Flow Characteristics of Centrifugal Pump." Processes 8, no. 1 (2020): 122. http://dx.doi.org/10.3390/pr8010122.

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In order to make the centrifugal pump run efficiently and stably under various working conditions, the influences of the incoming vortex flow in the inlet pipe on the main flow in the impeller is studied numerically, based on the k − ω SST turbulence model. Some guide vanes with different offset angle were added to change the statistical characteristic of the internal flow in the inlet pipe of the centrifugal pump. Both contour distributions of internal flow and statistical results of external performance are obtained and analyzed. The results show that the existence of vanes can divide the la

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24

Rogovyi, Andrii, and Serhiy Lukianets. "KINEMATIC PARAMETERS OF THE OIL FLOW IN A VORTEX CHAMBER PUMP." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 1 (November 14, 2022): 59–65. http://dx.doi.org/10.20998/2411-3441.2022.1.09.

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The difficult operating conditions of oil pumps require high levels of reliability, durability and efficiency from hydraulic machines. The gas dissolved in oil leads to the appearance of regions with variable density in the pumps flow parts and to a breakdown in performance. The use of jet pumps is limited due to low efficiency. Therefore, the operation of new vortex chamber pumps for oil production and transportation is quite promising due to the increase in pumping efficiency indicators using the advantages of centrifugal and jet technology in these pumps. On the other hand, to date, no stud

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25

Lu, Lifeng, Ziwei Ren, Zhongzan Wang, et al. "A Study on the Transient Characteristics of the Power-Off Transition Process of a Double-Volute Centrifugal Pump." Water 16, no. 12 (2024): 1707. http://dx.doi.org/10.3390/w16121707.

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A double-volute centrifugal pump is a very important pump type; the internal flow field of a centrifugal pump will change drastically during the transition process of power failure, which will affect the safety and stability of the pump’s operation. In this paper, the CFD numerical simulation method is used, and the UDF procedure is developed to realize the continuous update of the impeller speed at each time step. The working parameters, such as the torque and flow rate at the instantaneous moment, are obtained through the sequential iteration of each small step, and a numerical simulation of

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26

Yuan, Jian Ping, Wei Sun, Long Yan Wang, and Yun Liang. "Numerical Simulation Research on Vortex Characteristics of Centrifugal Pump Inlet Recirculation." Advanced Materials Research 468-471 (February 2012): 2235–40. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.2235.

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The 3-D steady turbulent flow in a centrifugal pump under different conditions was simulated by ANSYS CFX software. The intensity, location and the morphology of the inlet recirculation vortex were analyzed using standard k-ε turbulent model through steady simulation. Based on the results, the turbulent flow in the impeller inlet was simulated by Large Eddy Simulation. The dynamic characters and the whole changing process of the recirculation vortex during the rotation of the impeller were analyzed. The results indicate that the critical flow rate of the recirculation onset is 0.7Qd. As the fl

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27

Wang, Like, Jinling Lu, Weili Liao, Yaping Zhao, and Wei Wang. "Numerical Simulation of the Tip Leakage Vortex Characteristics in a Semi-Open Centrifugal Pump." Applied Sciences 9, no. 23 (2019): 5244. http://dx.doi.org/10.3390/app9235244.

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Tip leakage vortex has an important influence on the performance of semi-open centrifugal pumps. Simulations based on the three-dimensional Reynolds-Averaged Navier–Stokes were conducted to study the structural characteristics of tip leakage vortex and its effects on the internal flow field, and the Shear Stress Transport k-ω turbulence model was used to simulate the whole flow passage of centrifugal pumps with tip clearances of 0 mm and 1 mm. Then, the tip leakage vortex was analyzed using the relative vorticity transport equation. The numerical data and experimental results agreed well. The

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28

Zhai, Lulu, Chao Lu, Jia Guo, Zuchao Zhu, and Baoling Cui. "Flow Characteristics and Energy Loss of a Multistage Centrifugal Pump with Blade-Type Guide Vanes." Journal of Marine Science and Engineering 10, no. 2 (2022): 180. http://dx.doi.org/10.3390/jmse10020180.

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Multistage pumps with blade-type guide vanes are widely used in offshore oil production, the petrochemical and coal-chemical industries, and nuclear power fields for its advantages of large flow rate, high pressure, and excellent operation stability. However, the internal flow of this kind of pump is complex; in particular, the hydraulic, flow, and pressure pulsation characteristics of the different stages are quite different, which has a great impact on the design and performance predictions of this kind of pump. Thus, in this paper, the hydraulic performance, unsteady flow characteristics, e

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Zheng, Su-Lu, Xiang-Ping Wang, Rui-Hang Zheng, Ai-Ping Xia, Yi-Nian Wang, and Yu-Liang Zhang. "Computation of Viscous Flow Inside a Double-Channel Centrifugal Pump." Open Mechanical Engineering Journal 8, no. 1 (2014): 613–18. http://dx.doi.org/10.2174/1874155x01408010613.

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The double-channel centrifugal pumps are widely used to transport the two-phase flow including big solid particles in industry and agriculture. However, the related design theory and the design method are immature by far. In practice, the revised design method based on the pure water medium is still the main method for the solid-liquid twophase double-channel pump. Therefore, it is very necessary to deeply study the flow characteristics on the condition of the pure water medium. In this paper, in order to study the flow characteristics inside a prototype double-channel centrifugal pump in the

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Denisov, K. E., and A. K. Liamasov. "Movable blade systems of low specific speed centrifugal pumps." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 9, no. 1 (2025): 37–45. https://doi.org/10.25206/2588-0373-2025-9-1-37-45.

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One of the most common types of pumping units used in industry are centrifugal pumps. In turn, there is a classification of centrifugal pumps according to design features. So-called low specific speed pumps are designed for low flow and high pressure. This type of pump is widely used in the chemical and oil industries due to its operating conditions, which involve overcoming the resistance of long technological pipelines. At the same time, low specific speed centrifugal pumps have low energy efficiency due to extensive vortex formation the moving fluid inside the flow area. In order to increas

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Song, Xijie, Dunzhe Qi, Lijuan Xu, et al. "Numerical Simulation Prediction of Erosion Characteristics in a Double-Suction Centrifugal Pump." Processes 9, no. 9 (2021): 1483. http://dx.doi.org/10.3390/pr9091483.

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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

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32

Tan, Lei, Baoshan Zhu, Yuchuan Wang, Shuliang CAO, and Shaobo Gui. "Numerical study on characteristics of unsteady flow in a centrifugal pump volute at partial load condition." Engineering Computations 32, no. 6 (2015): 1549–66. http://dx.doi.org/10.1108/ec-05-2014-0109.

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Purpose – The purpose of this paper is to elucidate the detailed flow field and cavitation effect in the centrifugal pump volute at partial load condition. Design/methodology/approach – Unsteady flows in a centrifugal pump volute at non-cavitation and cavitation conditions are investigated by using a computation fluid dynamics framework combining the re-normalization group k-e turbulence model and the mass transport cavitation model. Findings – The flow field in pump volute is very complicated at part load condition with large pressure gradient and intensive vortex movement. Under cavitation c

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Jing, Teng, Haoran Sun, Jianan Cheng, and Ling Zhou. "Optimization of a Screw Centrifugal Blood Pump Based on Random Forest and Multi-Objective Gray Wolf Optimization Algorithm." Micromachines 14, no. 2 (2023): 406. http://dx.doi.org/10.3390/mi14020406.

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The centrifugal blood pump is a commonly used ventricular assist device. It can replace part of the heart function, pumping blood throughout the body in order to maintain normal function. However, the high shear stress caused by the impeller rotating at high speeds can lead to hemolysis and, as a consequence, to stroke and other syndromes. Therefore, reducing the hemolysis level while ensuring adequate pressure generation is key to the optimization of centrifugal blood pumps. In this study, a screw centrifugal blood pump was used as the research object. In addition, pressure generation and the

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Xin, Tang, Liu Zhili, Zhao Meng, et al. "Analysis of Unsteady Flow Characteristics of Centrifugal Pump under Part Load Based on DDES Turbulence Model." Shock and Vibration 2021 (June 14, 2021): 1–11. http://dx.doi.org/10.1155/2021/9970800.

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To better reveal the mechanism of the rotor-stator interference between the impeller and the guide vane and the evolution process of the stall vortex under the part-load conditions, numerical simulation is carried out based on the DDES turbulence model, which can better capture vortex structure. And the pressure pulsation and the radial velocity distribution of the centrifugal pump are studied. The vortex structure and pressure fluctuation of pump internal flow field under part-load condition of Q = 0.4 Qdes are mainly analyzed. The analysis results show that the stall vortex is formed at the

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Quan, Hui, Yanan Li, Lei Kang, Xinyang Yu, Kai Song, and Yongkang Wu. "Influence of Blade Type on the Flow Structure of a Vortex Pump for Solid-Liquid Two-Phase Flow." Machines 9, no. 12 (2021): 353. http://dx.doi.org/10.3390/machines9120353.

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Vortex pumps have good non-clogging performance owing to their impellers being retracted into retraction cavities, but they are much less efficient than ordinary centrifugal pumps. In this paper, numerical simulations were performed on a model of the 150WX200-20 vortex pump for four different blade types, and the influence of blade structure on pump performance was determined. The simulations revealed the existence of axial vortices in the flow passage between the blades in the impeller region. The geometric characteristics of these axial vortices were more regular in two-phase solid-liquid fl

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36

Jia, Xiao-Qi, Bao-Ling Cui, Yu-Liang Zhang, and Zu-Chao Zhu. "Study on Internal Flow and External Performance of a Semi-open Impeller Centrifugal Pump with Different Tip Clearances." International Journal of Turbo & Jet-Engines 32, no. 1 (2015): 1–12. http://dx.doi.org/10.1515/tjj-2014-0010.

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AbstractTo study the influence of tip clearance on internal flow characteristics and external performance of a prototype centrifugal pump with a semi-open impeller, the unsteady numerical simulation and performance experiments are carried out in this paper. The evolution process of leakage vortex with time

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37

Zhao, Siwei, Yiming Li, Ling Zhang, Kai Wang, and Guangzhao Luo. "Influence of the Volute Tongue Shape on Cavitation Performance in Aviation Fuel Centrifugal Pump." Scanning 2023 (February 22, 2023): 1–15. http://dx.doi.org/10.1155/2023/7189771.

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During the operation of an aviation fuel centrifugal pump, the performance of the pump dropped sharply due to cavitation, which caused cavitation damage near the volute tongue, which seriously threatened the safe and stable operation of the aircraft. According to the characteristics that the cavitation in the volute tongue region occurs in large flow rate, the volute tongue shape of aviation fuel centrifugal pump was improved in this paper, and the influence of the volute tongue shape on the cavitation characteristics of aviation fuel centrifugal pump at 1.2 times of design flow rate was studi

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38

Jian, Dong, Lu Jinling, Liang Wuke, Wang Wei, and Ai Gaigai. "An Improved Grey Wolf Optimizer(IGWO) algorithm for optimization of centrifugal pump with guide vane." Journal of Physics: Conference Series 2854, no. 1 (2024): 012061. http://dx.doi.org/10.1088/1742-6596/2854/1/012061.

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Abstract To improve the hydraulic performance of a centrifugal pump with guide vane, an improved grey wolf optimizer (IGWO) algorithm is proposed. First, the IGWO algorithm enhances the diversity and global exploration of the initial population with optimal Latin hypercube sampling. Then, the convergence factor is improved by combining the Tanh function to meet the needs of complex non-linear optimization problems. Finally, a search mechanism that enhances population communication is constructed and combined with a mutation-driven search scheme to improve the ability to avoids the local optima

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39

Wu, Xianglong, Yongfei Yang, Weidong Shi, Sihao Wu, and Yongxin Jin. "Numerical Simulation Study on Flow Characteristics of Multistage Centrifugal Pumps under Different Inlet Gas Void Fractions." Sustainability 15, no. 21 (2023): 15485. http://dx.doi.org/10.3390/su152115485.

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The flow characteristics of multistage centrifugal pumps in transporting gas–liquid mixed media are highly complex; particularly, the unstable flow of the passage at high gas contents exacerbates energy losses, leading to a decrease in pump efficiency and stability. The excess energy loss in the pump is not conducive to the concept of sustainable development. In this study, a numerical simulation of multistage centrifugal pumps was conducted based on the Euler–Euler heterogeneous two-fluid model. This research revealed that gas primarily accumulates on the suction side of each impeller stage,

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Song, Zhengkai, Yuxuan Chen, Tao Yu, et al. "Influence of the Trailing Edge Shape of Impeller Blades on Centrifugal Pumps with Unsteady Characteristics." Processes 12, no. 3 (2024): 508. http://dx.doi.org/10.3390/pr12030508.

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The flow field structure and pressure pulsation characteristics in two series of trailing edges of a centrifugal pump are investigated using the SST k-w turbulence model. Series 1 involves varying the impeller exit angle, and Series 2 involves varying the impeller exit shape. The entropy generation rate analysis method is used to evaluate the numerical simulation results. Vortex cores within the flow field are identified by applying the Ω criterion. The influence of different trailing edge configurations on the energy loss characteristics of the pumps is explored. The dynamic mode decompositio

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Soyama, Hitoshi, Tomoyoshi Okamura, Sumio Saito, Hiroharu Kato, and Risaburo Oba. "Observations of Severely Erosive Vortex Cavitation in a Centrifugal Pump." Transactions of the Japan Society of Mechanical Engineers Series B 59, no. 560 (1993): 1140–44. http://dx.doi.org/10.1299/kikaib.59.1140.

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42

Ge, X. F., Z. X. Gao, Y. Zheng, and M. H. Shen. "Efficiency calculation and the vortex characteristics research of centrifugal pump." IOP Conference Series: Earth and Environmental Science 15, no. 3 (2012): 032031. http://dx.doi.org/10.1088/1755-1315/15/3/032031.

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43

Shang, Yong, Xiao Bing Liu, and Xue Jun Yu. "Numerical Simulation and Experimental Study on Hydraulic Performance of Centrifugal Pump's Impeller Based on FINE." Applied Mechanics and Materials 444-445 (October 2013): 390–94. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.390.

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By using the FINE software developed by NUMECA Company, the hydraulic performance of the impeller of a centrifugal pump with spatial guide vanes was numerically simulated. The S-A turbulent model was used to numerically calculate the three-dimensional flow field in the centrifugal pump under three different conditions. The flow analysis shows that the pressure gradient on the vane surface gradually reduces with the increasing of the flow rate; the position of axial vortex between vanes has nothing to do with the flow rate; the tangential flow gradient in the flow passage decreases with the inc

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Li, Hui, Yongjun Chen, Yang Yang, Shixin Wang, Ling Bai, and Ling Zhou. "CFD Simulation of Centrifugal Pump with Different Impeller Blade Trailing Edges." Journal of Marine Science and Engineering 11, no. 2 (2023): 402. http://dx.doi.org/10.3390/jmse11020402.

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The centrifugal pump is one of the most widely used types of power machinery in the field of ship and ocean engineering, and the shape of the impeller blade trailing edge has an important influence on their performance. To reveal the mechanism of the effect of different trailing edges on external performance, the internal flow of 16 types of impeller blade trailing edges of a centrifugal pump, consisting of Bezier trailing edges, rounding on the pressure side, cutting on the suction side, and the original trailing edge is studied by numerical simulation. The reverse flow, shaft power, and ener

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Bai, Yongming, Desmond Appiah, and Yi Tao. "Computational turbulent flow characteristics in a centrifugal pump." AIP Advances 12, no. 7 (2022): 075025. http://dx.doi.org/10.1063/5.0100915.

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This investigation provides the 3D numerical simulations of a six-blade centrifugal pump that is commonly applied in agriculture and food processing sectors. The simulations were carried out using the unsteady Reynolds averaged Navier–Stokes equations. The k-omega turbulence model was used as a closure for the equations. The velocity and pressure flow fields were used to predict the turbulent flows in the pump under three different operating conditions ( part-load 0.8Qd, design 1.0 Qd, and overload 1.2 Qd). The omega vortex identification criterion was further applied to visualize the coherent

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Dong, Liang, Yuhang Zhang, Zhipeng Ge, Cui Dai, and Jinnan Guo. "Study and Verification of Large-Scale Parallel Mesh Generation Algorithm for Centrifugal Pump." Mathematical Problems in Engineering 2020 (April 14, 2020): 1–11. http://dx.doi.org/10.1155/2020/1956852.

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In order to reveal the details of the internal flow in a centrifugal pump, a large-scale mesh is needed. However, the mesh generated by the serial grid algorithm cannot meet the calculation requirements due to the huge amount of time. A large-scale parallel mesh generation algorithm of a centrifugal pump for high-performance computers is presented in this paper. First, a grid point set for the 3D Delaunay triangular mesh on the surface of the centrifugal pump is generated. Then, the S-H (Sutherland–Hodgman) algorithm for cropping and segmenting these grid point sets on the surface is employed.

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Song, Xijie, Kuizheng Zhu, and Zhengwei Wang. "Research on the Influence of Symmetrical Installation of Blade on the Sediment Erosion in a Multi-Stage Centrifugal Pump." Symmetry 16, no. 12 (2024): 1636. https://doi.org/10.3390/sym16121636.

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Double suction pumps are widely used in the Yellow River in the China water intake pump stations, which face serious sediment wear. A prediction model for gap erosion in gas-liquid solid three-phase flow was constructed. A gas core factor has been added to the gap erosion model to achieve accurate prediction of particle impact velocity and impact angle caused by cavitation air core deformation. The influence mechanism of cavitation flow and sand-laden suction vortex on the sediment erosion. Usually, double suction pumps are one type. This study aims to explore the effects of the symmetrical an

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Xu, Zhenfa, Fanyu Kong, Hongli Zhang, Kun Zhang, Jiaqiong Wang, and Ning Qiu. "Research on Visualization of Inducer Cavitation of High-Speed Centrifugal Pump in Low Flow Conditions." Journal of Marine Science and Engineering 9, no. 11 (2021): 1240. http://dx.doi.org/10.3390/jmse9111240.

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Inducer is often used to improve the cavitation performance of pump. In order to study the cavitation characteristics of inducer under low flow condition of high-speed pump, high-speed photography technology was employed in this paper to carry out visual experiments on the inducer of a high-speed centrifugal pump. In low flow rates, Cavitation distribution and evolution among the inducer were captured. The experimental results revealed that a band-shaped backflow vortex in the inlet pipe would occur when the flow rate was less than 0.3 Qd. Moreover, the backflow vortex in the inlet pipe rotate

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49

Hoerr, Harry R., Michael F. Kraemer, J. Lynne Williams, et al. "In Vitro Comparison of the Blood Handling by the Constrained Vortex and Twin Roller Blood Pumps." Journal of ExtraCorporeal Technology 19, no. 3 (1987): 316–21. http://dx.doi.org/10.1051/ject/1987193316.

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(J. Extra-Corpor. Technol. 19[3] p. 316-321 Fall 1987, 30 ref.) Several authors and manufacturers refer to the superior blood handling capability of the constrained vortex blood pump (CVP) design compared to the roller pump (RP). Little, if any, scientific evidence has been presented to support this thinking. The hypothesis that the RP and the CVP are equivalent in regard to trauma to blood cellular elements and proteins was tested. The RP, a Cobe Roller Pump (CRP), was tested utilizing a new longterm formulation of PVC tubing. Two models of the CVP were tested, the Bio-Medicus Centrifugal Pum

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50

Ke, Qidi, Lingfeng Tang, Wenbin Luo, and Jingzhe Cao. "Parameter Optimization of Centrifugal Pump Splitter Blades with Artificial Fish Swarm Algorithm." Water 15, no. 10 (2023): 1806. http://dx.doi.org/10.3390/w15101806.

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Low specific speed centrifugal pumps typically suffer from low efficiency and severe backflow; adding optimally structured splitter blades can play a role. In this paper, the distribution of pressure and velocity in the flow channel is analyzed using CFD simulation for a low specific speed centrifugal pump. The geometric parameters of the splitter blade are optimized using an orthogonal test and an artificial fish swarm algorithm; then the optimal splitter blade structure is obtained. Results showed that the splitter blade not only effectively solves the backflow of the flow channel and compre

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