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Journal articles on the topic 'Centrifugal-vortex pumps'

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

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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3

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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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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5

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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6

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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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

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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9

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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10

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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11

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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12

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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13

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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14

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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15

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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16

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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17

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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18

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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19

Li, Bowen, Xiaojun Li, Xiaoqi Jia, Feng Chen, and Hua Fang. "The Role of Blade Sinusoidal Tubercle Trailing Edge in a Centrifugal Pump with Low Specific Speed." Processes 7, no. 9 (2019): 625. http://dx.doi.org/10.3390/pr7090625.

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Pressure pulsations may cause high-amplitude vibrations during the process of a centrifugal pump. The trailing edge shape of the blade has a critical influence on the pump’s pressure fluctuation and hydraulic characterization. In this paper, inspired by the humpback whale flipper, the authors research the impact of applying the sinusoidal tubercles to the blade suction side of the trailing edge. Numerical calculation and experiments are carried out to investigate the impact of the trailing edge shape on the pressure pulsations and performance of a centrifugal pump with low specific speed. Two

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20

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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21

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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22

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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23

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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24

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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25

Zhang, Shuwei, Renhui Zhang, Sidai Zhang, and Junhu Yang. "Effect of Impeller Inlet Geometry on Cavitation Performance of Centrifugal Pumps Based on Radial Basis Function." International Journal of Rotating Machinery 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/6048263.

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Aiming at the cavitation problem, the blade leading edge shape has been changed to analyze its impact on the cavitation performance for centrifugal pumps. And the response model has been established based on the Radial Basis Function. The calculation case results show that the leading edge extending forward along the shroud can improve the inlet flow condition and cavitation performance. But the cavitation performance has been reduced immensely when the leading edge extends backward along the shroud. Along with the leading edge which extends forward along the hub, the cavitation performance in

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26

Meng, Long, Min He, Lingjiu Zhou, Jing Yang, Zhengwei Wang, and Bryan Karney. "Influence of impeller-tongue interaction on the unsteady cavitation behavior in a centrifugal pump." Engineering Computations 33, no. 1 (2016): 171–83. http://dx.doi.org/10.1108/ec-09-2014-0179.

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Purpose – The purpose of this paper is to analyze the cavitation dynamics in the blade channel of a centrifugal pump with a particular focus on the direct influence of the pump’s volute. Design/methodology/approach – A homogeneous multiphase model, namely the Zwart-Gerber-Belamri cavitation model, is employed to numerically describe the evolution of the process of cavitation within the pump. The RNG k-e turbulence model is applied to analyze the unsteady turbulent flow. A second order implicit formulation is used for the time discretization for the unsteady flow calculation and a finite volume

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27

Rogovyi, Andrii, Serhiy Lukianets, Artem Neskorozhenyi, Oleksandr Shudryk, and Pavlo Tolstyi. "VORTEX CHAMBER PUMP CHARACTERISTICS DURING OIL PUMPING WITH DIFFERENT SUCTION PRESSURES." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 2 (June 4, 2023): 54–58. http://dx.doi.org/10.20998/2411-3441.2022.2.09.

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Improving the efficiency of oil pumping is an urgent and difficult task due to the significant variety of composition, physical properties and impurities that can enter the oil. Among the means of oil transportation, jet pumps and technologies are gaining popularity. Jet machines and devices have highreliability indicators due to the absence of moving bodies at low efficiency, which is associated with the energy transfer between jets, and vortex chamber superchargers stand out among other jet-type pumps by combining the positive qualities of centrifugal and jet pumps. The aim of the work is to

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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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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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30

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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31

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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32

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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33

SALEH, I., and A. LOTFY. "VORTEX SIMULATION IN RADIAL FLOW IMPELLERS OF CENTRIFUGAL PUMPS AT PART LOADS." International Conference on Aerospace Sciences and Aviation Technology 4, ASAT CONFERENCE (1991): 1–9. http://dx.doi.org/10.21608/asat.1991.25674.

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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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35

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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Zhang, Beile, Ben Niu, Ze Zhang, Shuangtao Chen, Rong Xue, and Yu Hou. "Application and Challenge of High-Speed Pumps with Low-Temperature Thermosensitive Fluids." Energies 17, no. 15 (2024): 3732. http://dx.doi.org/10.3390/en17153732.

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The rapid development of industrial and information technology is driving the demand to improve the applicability and hydraulic performance of centrifugal pumps in various applications. Enhancing the rotational speed of pumps can simultaneously increase the head and reduce the impeller diameter, thereby reducing the pump size and weight and also improving pump efficiency. This paper reviews the current application status of high-speed pumps using low-temperature thermosensitive fluids, which have been applied in fields such as novel energy-saving cooling technologies, aerospace, chemical indus

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Bobkov, Alexandr. "Estimating the optimal value of diameter of the inlet to the impeller of a centrifugal blood pump." E3S Web of Conferences 383 (2023): 04090. http://dx.doi.org/10.1051/e3sconf/202338304090.

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The article is devoted to the optimization of the design of the inlet zone of a centrifugal blood pump. One of the disadvantages of such pumps is the generation of turbulence in the flow of the pumped fluid, which contributes to high blood hemolysis. The reason for turbulence lies in a combination of geometric and kinematic factors, in particular, a 90 degree turn of the flow in the inlet part of the impeller channels and a high circumferential speed of rotation of its channels. The hydrodynamic consequence of this is an increase in the hydraulic resistance of the pump flow path and separation

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Qian, Bing, Yinhui Cai, Qiang Ding, Daoli Zhao, Weipeng Sun, and Like Wang. "Investigation of Tip Leakage Vortex Structure and Trajectory in a Centrifugal Pump with a New Omega Vortex Identification Method." Applied Sciences 12, no. 10 (2022): 5270. http://dx.doi.org/10.3390/app12105270.

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Semi-open centrifugal pumps are widely used in various fields. However, the tip leakage vortex (TLV) has a malign effect on the impeller flow field. The structure and trajectory of a TLV under different discharge conditions were simulated and are discussed herein. Then, the characteristics of the TLV were analyzed using a new omega vortex identification method. The external characteristic and pressure fluctuation of the simulation and experiment were consistent. A secondary leakage vortex near the blade outlet was formed under the high-discharge condition. A leading-edge overflow phenomenon un

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Pochylý, František, David Štefan, and Simona Fialová. "Study of dynamic vortex structures of an incompressible liquid." EPJ Web of Conferences 299 (2024): 01031. http://dx.doi.org/10.1051/epjconf/202429901031.

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The study of non-stationary vortex structures arising at the inlet of centrifugal pumps and at the outlet of turbines of the Kaplan and Francis type is the subject of the presented paper. Specific attention will be paid to spatial vortices, characterized by curvature and twist. Spiral vortices will also be monitored as sources of spatial vortex motion. Their core will be expressed by a mathematical model in curvilinear coordinates. Helicity, which indicates the degree of vorticity, will also be determined by computational simulation of turbulent motion. The swirling motion will be induced by a

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Xiao, Yexiang, Zhonghua Gui, Xuesong Li, Zekui Shu, Guangtai Shi, and Chunwei Gu. "Numerical Investigation of Gas-Liquid Flow in a Multiphase Pump with Special Emphasis on the Effect of Tip Leakage Vortex on the Gas Flow Pattern." Journal of Marine Science and Engineering 10, no. 11 (2022): 1665. http://dx.doi.org/10.3390/jmse10111665.

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In this paper, the gas-liquid flow is comprehensively analyzed under different inlet gas void fractions, and the effect of tip leakage vortex (TLV) on the gas flow pattern in multiphase pumps is revealed. The results show that the gas flow pattern in an impeller is closely related to the centrifugal force, low-pressure region, and vortex motion. Most gas is present near the hub and suction surface of the blade as well as in the TLV. The two- and three-dimensional spatiotemporal evolution of the gas is presented, and the gas motion during the inception, development, and dissipation of TLV is re

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Cui, Baoling, and Chaofan Li. "Influence of Axial Matching between Inducer and Impeller on Energy Loss in High-Speed Centrifugal Pump." Journal of Marine Science and Engineering 11, no. 5 (2023): 940. http://dx.doi.org/10.3390/jmse11050940.

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Studying the axial matching between the inducer and impeller is crucial for optimizing the structure of centrifugal pumps. In this paper, the SST k-ω turbulence model is used to analyze the influence of three axial positions on the internal flow and the energy loss of a centrifugal pump. Additionally, the entropy generation method is used to evaluate the energy loss in the pump. Three sets of inducer design schemes are selected based on the ratio of the distance from the trailing edge of the inducer to the impeller inlet and the impeller inlet diameter, which are λ = 0.6, λ = 0.9 (original sch

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Yuan, Ye, Weihong Gong, Guojun Wang, and Jun Wang. "Research on the Performance Characteristics and Unsteady Flow Mechanism of a Centrifugal Pump under Pitch Motion." Water 15, no. 20 (2023): 3706. http://dx.doi.org/10.3390/w15203706.

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Pitch motion is the key factor affecting the performance characteristics of centrifugal pumps on board ships and exacerbates hydraulic excitation to induce the unsteady vibration of pump units. A hydraulic test platform with swing motion is established to explore the effects of pitch motion on a pump’s performance characteristics. An obvious hump zone exists in the head characteristic curve in the low-flow-rate condition due to the pitch motion. The pump head in the shut-off condition has a significant decrease due to the pitch motion, compared to the static state. The head decrease gradually

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Li, Wei, Xiaofan Zhao, Weiqiang Li, Weidong Shi, Leilei Ji, and Ling Zhou. "Numerical Prediction and Performance Experiment in an Engine Cooling Water Pump with Different Blade Outlet Widths." Mathematical Problems in Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/8945712.

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Changing the blade outlet width is an important method to adjust the performance curves of centrifugal pumps. In this study, three impellers with different blade outlet widths in an engine cooling water pump (ECWP) were numerically simulated based on ANSYS-CFX software. Numerical calculation reliability was validated based on the comparison between simulation results and experimental datum. As the blade outlet width increases, from the performance curves, the investigated ECWP head increases gradually; and the best efficiency point (BEP) offsets to larger flow rate; and the high efficiency reg

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Chui, Betty S., Jay H. Shapiro, Klayton Buckley, E. Lanier Allen, and Gary Lofland. "Use of the Constrained Vortex Pump in Children Under 20 kg." Journal of ExtraCorporeal Technology 23, no. 3 (1991): 98–101. http://dx.doi.org/10.1051/ject/199123398.

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Since the inception of the constrained vortex pump, much controversy has arisen over its use during cardiopulmonary bypass (CPB). Centrifugal pumps used during pediatric perfusion requiring low flow rates have been cited with increased hemolysis and fluctuating flow rates. At the Medical College of Virginia Hospitals, 209 children weighing <20 kg have been placed on CPB utilizing the BioMedicus BP 50 pump. This study describes the technique and evaluates pump induced hemolysis by measuring plasma free hemoglobin (PFH) production. Five consecutive pediatric patients, age 0.2-48 months, (2.8-

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Guo, Chang, Jingying Wang, and Ming Gao. "A Numerical Study on the Distribution and Evolution Characteristics of an Acoustic Field in the Time Domain of a Centrifugal Pump Based on Powell Vortex Sound Theory." Applied Sciences 9, no. 23 (2019): 5018. http://dx.doi.org/10.3390/app9235018.

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The acoustic field distribution and evolution characteristics in a time domain inside a centrifugal pump are studied. During the fluid motion process, the acoustic source and acoustic pressure are basically less than 0, and the minimum value of the two parameters is distributed near the tongue. Additionally, the concentration, break, extend, migration and reaggregation phenomena of the minimum acoustic source region exist. Specifically, as the blade passes through the tongue, the minimum acoustic source region concentrates on the tongue firstly, then extends and migrates downstream slightly wi

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Belkoniene, Mhedi, Saad Abdel-Sayed, Julien Favre, and Ludwig-Karl Von Segesser. "Performance Increase in Venous Drainage for Mini-Invasive Heart Surgery: Superiority of Self-Expanding Cannulas." Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery 9, no. 4 (2014): 297–301. http://dx.doi.org/10.1097/imi.0000000000000083.

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Objective Originally, the Smartcanula principle (collapsed insertion and expansion in situ) was developed for venous drainage by gravity. However, in minimally invasive surgery, augmentation with either constrained force vortex pumps or vacuum is often used. The current study was set up to assess whether smaller diameters of self-expanding venous cannulas are sufficient in conjunction with venous drainage augmentation resulting in smaller access orifices. Methods To evaluate cannulas intended for cardiopulmonary bypass, an in vitro circuit was set up with silicone tubing between the test cannu

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Chen, Bo, and Yuzhe Qian. "Effects of Blade Suction Side Modification on Internal Flow Characteristics and Hydraulic Performance in a PIV Experimental Centrifugal Pump." Processes 10, no. 12 (2022): 2479. http://dx.doi.org/10.3390/pr10122479.

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In this paper, the effects of blade trailing edge (TE) profile modification of the suction side on the internal flow and hydraulic performance in a low-specific speed centrifugal pump are investigated through particle image velocimetry (PIV) analysis. Three impellers with different blade trailing edge profiles named original trailing edge (OTE), arc trailing edge 1 (ATE1), and arc trailing edge 2 (ATE2) are designed for PIV experiments. Results show that blade trailing edge modification of the suction side can significantly change the flow pattern, affecting the hydraulic performance of the mo

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Xie, Chuanliu, Tao Zhang, Zhenyang Yuan, Andong Feng, and Liming Wu. "Optimization Design and Internal Flow Analysis of Prefabricated Barrel in Centrifugal Prefabricated Pumping Station with Double Pumps." Processes 10, no. 9 (2022): 1877. http://dx.doi.org/10.3390/pr10091877.

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In order to improve the hydraulic performance of the centrifugal prefabricated pumping station and improve its internal flow pattern, this paper optimizes the geometric model of the centrifugal prefabricated pumping station based on the orthogonal optimization method. Through the subjective analysis method and range analysis method, it is concluded that the primary and secondary order affecting the hydraulic performance of the prefabricated pumping station is: center distance Y, pump spacing S, inlet radius R, suspension height Z, inlet height H, and the optimal parameter combination is pump s

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Rogovyi, Andrii, Artem Neskorozhenyi, Yevhen Timchenko, Viktoriia Andriievska, and Mykola Yaroshenko. "DEPENDENCE OF THE EFFICIENCY OF A VORTEX CHAMBER EJECTOR ON ITS GEOMETRIC PARAMETERS." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 1 (November 29, 2024): 13–19. https://doi.org/10.20998/2411-3441.2024.1.02.

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The wear and decreased efficiency of superchargers with moving impellers make using jet devices in many technological processes advisable. Using the properties of swirling flows, such as reduced axial pressure, has created vortex ejectors. Still, their energy performance and efficiency are reduced compared to classical direct-flow jet pumps and ejectors. The solution to this problem may be the use of more advanced energy transfer principles and technical solutions in the design of vortex chamber-based jet superchargers. Such superchargers are vortex chamber superchargers, which, due to the use

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Guo, Chang, Ming Gao, and Jingying Wang. "Acoustic distribution study inside centrifugal pump impeller under different blade outlet angles using the Powell vortex sound theory." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 13 (2020): 2595–609. http://dx.doi.org/10.1177/0954406220908732.

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The acoustic distribution characteristics inside centrifugal pump impeller under different blade outlet angles are explored based on the Powell vortex sound theory. It is shown that the increase in the blade outlet angle narrows the fluctuation ranges of the acoustic source and acoustic pressure perturbation at the impeller outlet far away from the tongue, while extends those near the tongue. The total acoustic source intensity and total acoustic pressure level at the impeller outlet far away from the tongue decrease by 1.23% and 1.17%, respectively, while those near the tongue increase by 0.6

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