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Journal articles on the topic 'Pumps in two-phase flow'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Cunningham, R. G. "Liquid Jet Pumps for Two-Phase Flows." Journal of Fluids Engineering 117, no. 2 (1995): 309–16. http://dx.doi.org/10.1115/1.2817147.

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Isothermal compression of a bubbly secondary fluid in a mixing-throat and diffuser is described by a one-dimensional flow model of a liquid-jet pump. Friction-loss coefficients used in the four equations may be determined experimentally, or taken from the literature. The model reduces to the liquid-jet gas compressor case if the secondary liquid is zero. Conversely, a zero secondary-gas flow reduces the liquid-jet gas and liquid (LJGL) model to that of the familiar liquid-jet liquid pump. A “jet loss” occurs in liquid-jet pumps if the nozzle tip is withdrawn from the entrance plane of the thro

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2

Furuya, Okitsugu. "An Analytical Model for Prediction of Two-Phase (Noncondensable) Flow Pump Performance." Journal of Fluids Engineering 107, no. 1 (1985): 139–47. http://dx.doi.org/10.1115/1.3242432.

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During operational transients or a hypothetical LOCA (loss of coolant accident) condition, the recirculating coolant of PWR (pressurized water reactor) may flash into steam due to a loss of line pressure. Under such two-phase flow conditions, it is well known that the recirculation pump becomes unable to generate the same head as that of the single-phase flow case. Similar situations also exist in oil well submersible pumps where a fair amount of gas is contained in oil. Based on the one dimensional control volume method, an analytical method has been developed to determine the performance of

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3

Jiang, Qifeng, Yaguang Heng, Xiaobing Liu, Weibin Zhang, Gérard Bois, and Qiaorui Si. "A Review of Design Considerations of Centrifugal Pump Capability for Handling Inlet Gas-Liquid Two-Phase Flows." Energies 12, no. 6 (2019): 1078. http://dx.doi.org/10.3390/en12061078.

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Most of the pumps working under two phase flows conditions are used in petroleum industry applications, like electrical submersible pumps (ESP) for hydrocarbon fluids, in chemistry, nuclear industries and in agriculture for irrigation purposes as well. Two-phase flows always deteriorate overall pump performances compared with single flow conditions. Several papers have been published aiming to understand flow physics and to model all the main mechanisms that govern gas pocket formation and surging phenomena. These mechanisms depend on the pump type, the impeller geometry, the rotational speed,

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4

Harun, Amrin F., Mauricio G. Prado, Siamack A. Shirazi, and Dale R. Doty. "Two-Phase Flow Modeling of Inducers." Journal of Energy Resources Technology 126, no. 2 (2004): 140–48. http://dx.doi.org/10.1115/1.1738124.

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Inducers, which are classified as axial flow pumps with helical path blades, are used within rotary gas separators commonly used in electrical submersible pump installations. A two-phase flow model has been developed to study the inducer performance, focusing on head generation. The proposed model is based on a meridional flow solution technique and utilizes a two-fluid approach. The model indicates that head degradation due to gas presence is a function of flow pattern. The effect of flow pattern diminishes when the void fraction is greater than 15 percent since the centrifugal force dominate

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5

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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6

Noghrehkar, G. R., M. Kawaji, A. M. C. Chan, H. Nakamura, and Y. Kukita. "Investigation of Centrifugal Pump Performance Under Two-Phase Flow Conditions." Journal of Fluids Engineering 117, no. 1 (1995): 129–37. http://dx.doi.org/10.1115/1.2816802.

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A one-dimensional two-fluid model has been used to study the centrifugal pump head degradation phenomena and to analyze the gas-liquid interaction within the pump impeller under high pressure, steam-water two-phase flow conditions. The analytical model was used to predict the two-phase pump head data for the small-scale and full-scale nuclear reactor pumps and the predictions of the head degradation compared favorably with the test data for different suction void fractions. The physical mechanisms responsible for head degradation were also investigated.

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7

Caridad, Jose´, and Frank Kenyery. "CFD Analysis of Electric Submersible Pumps (ESP) Handling Two-Phase Mixtures." Journal of Energy Resources Technology 126, no. 2 (2004): 99–104. http://dx.doi.org/10.1115/1.1725156.

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The behavior of electric submersible pumps (ESP) handling two-phase flow is a subject of primary concern, especially in the petroleum industry, where significant amounts of free gas may be found in oil wells production. In the past, several attempts were made to predict the performance of such kind of pumps, nevertheless, limited success has been achieved due to the complex flow dynamics inside the impeller. Geometry, gas void fraction (GVF) and suction pressure seem to be the main parameters affecting ESP performance. Furthermore, the higher the GVF of the mixture is, the higher the degradati

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8

FURUKAWA, Akinori, and Sinji SATO. "Gas-Liquid Two-Phase Flow Performance of Turbo-Pumps." JAPANESE JOURNAL OF MULTIPHASE FLOW 6, no. 4 (1992): 379–86. http://dx.doi.org/10.3811/jjmf.6.379.

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9

FURUKAWA, Akinori, and Sinzi SATO. "Gas-Liquid Two-Phase Flow Performance of Turbo-Pumps." JAPANESE JOURNAL OF MULTIPHASE FLOW 7, no. 1 (1993): 5–12. http://dx.doi.org/10.3811/jjmf.7.5.

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10

Poullikkas, A. "Two phase flow performance of nuclear reactor cooling pumps." Progress in Nuclear Energy 36, no. 2 (2000): 123–30. http://dx.doi.org/10.1016/s0149-1970(00)00007-x.

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11

Mikhail, S., and Hesham A. M. Abdou. "Two-phase Flow in Jet Pumps for Different Liquids." Journal of Fluids Engineering 127, no. 5 (2005): 1038. http://dx.doi.org/10.1115/1.1990203.

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12

Moisidis, Charalampos T., and Eleftherios G. Kastrinakis. "Two-phase flow pattern transitions of short airlift pumps." Journal of Hydraulic Research 48, no. 5 (2010): 680–85. http://dx.doi.org/10.1080/00221686.2010.515382.

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13

Kassab, Sadek Z., Hamdy A. Kandil, Hassan A. Warda, and Wael H. Ahmed. "Air-lift pumps characteristics under two-phase flow conditions." International Journal of Heat and Fluid Flow 30, no. 1 (2009): 88–98. http://dx.doi.org/10.1016/j.ijheatfluidflow.2008.09.002.

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14

Zhang, Yu-Liang, Jun-Jian Xiao, Jian-Ping Yu, and Ying-Yu Ji. "Startup Characteristics of a Centrifugal Pump Delivering Gas-Liquid Two-Phase Flow." Advances in Mechanical Engineering 6 (January 1, 2014): 782619. http://dx.doi.org/10.1155/2014/782619.

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The transient performance of centrifugal pumps during the startup period has drawn more and more attention in recent years due to urgent engineering needs. In order to make certain the transient startup characteristics of a high specific-speed prototype centrifugal pump delivering the gas-liquid two-phase flow, the transient flows inside the pump are numerically simulated during the startup period using the dynamic slip region method in this paper. The results show that the difference in heads mainly focuses on the later stage of the startup period when the pump is used to transmit the pure wa

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15

Zhang, De-Sheng, Qiang Pan, Zhang Hu, Wei-Dong Shi, Rui-Jie Zhang, and Jin Xing. "Numerical simulation and optimization of solid-liquid two-phase flow in a back-swept axial-flow pump." Thermal Science 21, no. 4 (2017): 1751–57. http://dx.doi.org/10.2298/tsci160310064z.

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The simulation study is proposed to analyze the wear property of the axial flow pump using the sewage as medium. Different axial flow pumps are designed with different back-swept angles, of which are 40?, 65?, and 90?. Numerical simulation results showed the relationship between solid volume fraction and back-swept angle on the pressure/suction surface, as well as the particle diameter. To validate the correctness of numerical investigation, the result of the 65? backswept blade model was compared with a sludge axial flow pump in sewage treatment plant, which showed fair agreement with the sim

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16

Minemura, Kiyoshi, Tomomi Uchiyama, Shinji Shoda, and Kazuyuki Egashira. "Prediction of Air-Water Two-Phase Flow Performance of a Centrifugal Pump Based on One-Dimensional Two-Fluid Model." Journal of Fluids Engineering 120, no. 2 (1998): 327–34. http://dx.doi.org/10.1115/1.2820652.

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To predict the performance of centrifugal pumps under air-water two-phase flow conditions, a consistent one-dimensional two-fluid model with fluid viscosity and air-phase compressibility in a rotating impeller is proposed by considering energy changes in the transitional flow from the rotating impeller to the stationary volute casing. The two-fluid model is numerically solved for the case of a radial-flow pump after various constitutive equations are applied. The head and shaft power predicted are found to agree well with the measured values within ±20 percent of the rated flow capacity.

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17

Shahid, Salman, Sharul Sham Dol, Abdul Qader Hasan, Omar Mustafa Kassem, Mohamed S. Gadala, and Mohd Shiraz Aris. "A Review on Electrical Submersible Pump Head Losses and Methods to Analyze Two-Phase Performance Curve." WSEAS TRANSACTIONS ON FLUID MECHANICS 16 (February 9, 2021): 14–31. http://dx.doi.org/10.37394/232013.2021.16.3.

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Electrical submersible pumps (ESP) are referred to as a pump classification whose applications arebased upon transporting fluids from submersible elevations towards a fixed pipeline. Specific ESP pumps areutilized in offshore oil and gas facilities that are frequently employed in transport of Liquefied Natural Gas(LNG) terminals. Transport of LNG is a multiphase process that causes operational challenges for ESP due topresence of air pockets and air bubbles; presenting difficulties, such as cavitation and degradation to pumpcomponents. This performance degradation causes an economic risk to co

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18

Neve, R. S. "Diffuser performance in two-phase jet pumps." International Journal of Multiphase Flow 17, no. 2 (1991): 267–72. http://dx.doi.org/10.1016/0301-9322(91)90019-y.

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19

Zhang, Wenwu, Zhiyi Yu, Yongjiang Li, Jianxin Yang, and Qing Ye. "Numerical analysis of pressure fluctuation in a multiphase rotodynamic pump with air–water two-phase flow." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 74 (2019): 18. http://dx.doi.org/10.2516/ogst/2018101.

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Pressure fluctuation in single-phase pumps has been studied widely, while less attention has been paid to research on multiphase pumps that are commonly used in the petroleum chemical industry. Therefore, this study investigates the pressure fluctuation for a multiphase rotodynamic pump handling air–water two-phase flow. Simulations based on the Euler two-fluid model were carried out using ANSYS_CFX16.0 at different Inlet Gas Void Fractions (IGVFs) and various flow rate values. Under conditions of IGVF = 0% (pure water) and IGVF = 15%, the accuracy of the numerical method was tested by compari

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20

Sun, Datong, and Mauricio Prado. "Modeling Gas-Liquid Head Performance of Electrical Submersible Pumps." Journal of Pressure Vessel Technology 127, no. 1 (2005): 31–38. http://dx.doi.org/10.1115/1.1845473.

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This study presents a new gas-liquid model to predict electrical submersible pumps head performance. The newly derived approach based on gas-liquid momentum equations along pump channels has improved the Sachdeva model (Sachdeva, R., Doty, D. R., and Schmidt, Z., 1988, “Two-Phase Flow through Electrical Submersible Pumps,” Ph.D. dissertation, The University of Tulsa, Oklahoma; 1994, “Performance of Electric Submersible Pumps in Gassy Wells,” SPE Prod. Facil., 9, pp. 55–60) in the petroleum industry and generalized the Minemura model (Minemura, K., Uchiyama, T., Shoda, S. and Kazuyuki, E., 1998

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21

Shui, Qingjiao, Ting Jiang, Binghui Pan, Tianxing Yang, and Wei Pan. "Numerical Research on Performance of High-Speed Partial Emission Pump." Shock and Vibration 2021 (January 18, 2021): 1–11. http://dx.doi.org/10.1155/2021/6697063.

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The high-speed partial emission pump is a small flow and high-head pump, which has been widely used. To study the main factors affecting the performance of high-speed partial emission pumps, numerical simulation methods were used to calculate the performance parameters of high-speed partial emission pumps with and without inducers, and the external characteristic parameters were verified through comparison test values. The results show that the head of the high-speed partial emission pump with inducer is nearly 15 m higher than that of the high-speed partial emission pump without inducer. Cons

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22

Si, Zhang, Bois, Zhang, Cui, and Yuan. "Experimental Investigations on the Inner Flow Behavior of Centrifugal Pumps under Inlet Air-Water Two-Phase Conditions." Energies 12, no. 22 (2019): 4377. http://dx.doi.org/10.3390/en12224377.

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Centrifugal pumps are widely used and are known to be sensitive to inlet air-water two-phase flow conditions. The pump performance degradation mainly depends on the changes in the two-phase flow behavior inside the pump. In the present paper, experimental overall pump performance tests were performed for two different rotational speeds and several inlet air void fractions (αi) up to pump shut-off condition. Visualizations were also performed on the flow patterns of a whole impeller passage and the volute tongue area to physically understand pump performance degradation. The results showed that

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23

Abed, Rashal, Mohamed M. Hussein, Wael H. Ahmed, and Sherif Abdou. "Two-Phase Flow Mass Transfer Analysis of Airlift Pump for Aquaculture Applications." Fluids 6, no. 6 (2021): 226. http://dx.doi.org/10.3390/fluids6060226.

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Airlift pumps can be used in the aquaculture industry to provide aeration while concurrently moving water utilizing the dynamics of two-phase flow in the pump riser. The oxygen mass transfer that occurs from the injected compressed air to the water in the aquaculture systems can be experimentally investigated to determine the pump aeration capabilities. The objective of this study is to evaluate the effects of various airflow rates as well as the injection methods on the oxygen transfer rate within a dual injector airlift pump system. Experiments were conducted using an airlift pump connected

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24

Zhang, Fan, Ke Chen, Lufeng Zhu, Desmond Appiah, Bo Hu, and Shouqi Yuan. "Gas–Liquid Two-Phase Flow Investigation of Side Channel Pump: An Application of MUSIG Model." Mathematics 8, no. 4 (2020): 624. http://dx.doi.org/10.3390/math8040624.

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This paper introduces a novel application of a multiphase flow model called the Multi-Size-Group model (MUSIG) to solve 3D complex flow equations in a side channel pump, in order to analyze the flow dynamics of the gas phase distribution and migration under different inlet gas volume fractions (IGVFs). Under different IGVF, the suction side is more likely to concentrate bubbles, especially near the inner radius of the impeller, while there is very little or no gas at the outer radius of the impeller. The diameter of bubbles in the impeller are similar and small for most regions even at IGVF =

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25

Zhang, Fan, Martin Böhle, and Shouqi Yuan. "Experimental investigation on the performance of a side channel pump under gas–liquid two-phase flow operating condition." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 231, no. 7 (2017): 645–53. http://dx.doi.org/10.1177/0957650917713090.

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Side channel pump is a kind of small volume vane pump with low flow rate but high head and most side channel pumps can transport gas–liquid two-phase flow. In order to investigate the performance of this type of pump depending on the blade suction angle under gas–liquid two-phase flow operating condition, an experimental study has been carried out. The head and efficiency curves, and the influence of blade suction angle changes on these curves for different inlet gas volume fraction states are analyzed in detail. Moreover, the gas transporting capability of the impeller with three different bl

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26

Hasan, Abdulqader, Mohamed S. Gadala, Salman Shahid, Mohd Shiraz Aris, Sharul Sham Dol, and Mohammed Alavi. "Numerical Investigation of Wall Shear Stress under Single-Phase and Two-Phase Flow in the Electrical Submersible Pump." WSEAS TRANSACTIONS ON FLUID MECHANICS 16 (August 4, 2021): 158–67. http://dx.doi.org/10.37394/232013.2021.16.15.

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The effects of the wall shear stress on an Electrical Submersible Pump (ESP) was investigated in this paper. A CFD model in ANSYS Fluent was proposed to simulate actual single-phase and two-phase flow. The bottom hole pressure was minimized by utilizing the artificial lift methods. The flowing fluids in pumps and pipes causes shear stress on surface interacting. In multiphase flow application pump damages on head degradation as well as shear stress affects. The K-ω turbulence model and the multiphase Mixture approach with the sliding technique used to solve the Navier-Stokes equation. To study

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27

Bunt, E. A., B. Parsons, and F. Holtzhausen. "Role of Dissipation Characteristics in Predicting Flow from Dissimilar Centrifugal Pumps." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 208, no. 4 (1994): 285–94. http://dx.doi.org/10.1243/pime_proc_1994_208_049_02.

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Examination of flows in a particular case of dissimilar pumps coupled in series or in parallel (without check valves) showed that the ‘classical’ graphical solution of combined characteristics in the [+H, +Q] quadrant did not accord with the output field in certain regions. To predict the full flow fields, it was necessary to take into account dissipative flow characteristics in two other quadrants: for low-output parallel flow (when there is still flow available from the pump of higher head when the ‘weaker’ pump's flow has been reduced to zero), that in the [+H, –Q] quadrant; and for high se

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28

Cunningham, R. "Liquid jet pumps for two-phase flows." International Journal of Multiphase Flow 22 (December 1996): 147. http://dx.doi.org/10.1016/s0301-9322(97)88574-6.

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29

Kumar, A. N., and P. R. Burchett. "Operational capability of heat transport pumps under two-phase flow conditions." Tribology International 22, no. 3 (1989): 205–11. http://dx.doi.org/10.1016/0301-679x(89)90158-8.

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30

Zhang, Fan, Lufeng Zhu, Ke Chen, Weicheng Yan, Desmond Appiah, and Bo Hu. "Numerical Simulation of Gas–Liquid Two-Phase Flow Characteristics of Centrifugal Pump Based on the CFD–PBM." Mathematics 8, no. 5 (2020): 769. http://dx.doi.org/10.3390/math8050769.

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This work seeks to apply the computational fluid dynamics–population balance model (CFD–PBM) to investigate the gas distribution and flow mechanism in the gas–liquid two-phase flow of a centrifugal pump. The findings show that the numerical simulation accurately captures the bubble distribution characteristics in the process of coalescence and breakage evolution. In addition, comparing the CFD–PBM with the Double Euler, the hydraulic head of the pump are similar, but the efficiency using the Double Euler is much higher—even close to single-phase. This is in contrast to previous experimental re

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31

Ligus, Grzegorz, Daniel Zając, Maciej Masiukiewicz, and Stanisław Anweiler. "A New Method of Selecting the Airlift Pump Optimum Efficiency at Low Submergence Ratios with the Use of Image Analysis." Energies 12, no. 4 (2019): 735. http://dx.doi.org/10.3390/en12040735.

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This paper presents experimental studies on the optimization of two-phase fluid flow in an airlift pump. Airlift pumps, also known as mammoth pumps, are devices applied for vertical transport of liquids with the use of gas. Their operating principle involves the existence of a density gradient. This paper reports the results of experimental studies into the hydrodynamic effects of the airlift pump. The studies involved optical imaging of two-phase gas-liquid flow in a riser pipe. The visualization was performed with high-speed visualization techniques. The studies used a transparent model of a

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32

Shi, Baocheng, and Jinjia Wei. "Numerical Simulation of 3D Solid-Liquid Turbulent Flow in a Low Specific Speed Centrifugal Pump: Flow Field Analysis." Advances in Mechanical Engineering 6 (January 1, 2014): 814108. http://dx.doi.org/10.1155/2014/814108.

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For numerically simulating 3D solid-liquid turbulent flow in low specific speed centrifugal pumps, the iteration convergence problem caused by complex internal structure and high rotational speed of pump is always a problem for numeral simulation researchers. To solve this problem, the combination of three measures of dynamic underrelaxation factor adjustment, step method, and rotational velocity control means according to residual curves trends of operating parameters was used to improve the numerical convergence. Numeral simulation of 3D turbulent flow in a low specific speed solid-liquid ce

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33

Si, Qiaorui, Chunhao Shen, Asad Ali, Rui Cao, Jianping Yuan, and Chuan Wang. "Experimental and Numerical Study on Gas-Liquid Two-Phase Flow Behavior and Flow Induced Noise Characteristics of Radial Blade Pumps." Processes 7, no. 12 (2019): 920. http://dx.doi.org/10.3390/pr7120920.

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Miniature drainage pumps with a radial blade are widely used in situations with critical constant head and low noise requests, but the stable operation state is often broken up by the entraining gas. In order to explore the internal flow characteristics under gas–liquid two phase flow, pump performance and emitted noise measurements were processed under different working conditions. Three-dimensional numerical calculations based on the Euler inhomogeneous model and obtained experimental boundaries were carried out under different inlet air void fractions (IAVFs). A hybrid numerical method was

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34

Minemura, Kiyoshi, and Tomomi Uchiyama. "Prediction of Pump Performance Under Air-Water Two-Phase Flow Based on a Bubbly Flow Model." Journal of Fluids Engineering 115, no. 4 (1993): 781–83. http://dx.doi.org/10.1115/1.2910213.

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This paper is concerned with the determination of the performance change in centrifugal pumps operating under two-phase flow conditions using the velocities and void fractions calculated under the assumption of an inviscid bubbly flow with slippage between the two phases. The estimated changes in the theoretical head are confirmed with experiments within the range of bubbly flow regime.

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35

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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36

Yu, Li Juan, Xue Cheng Zhang, and Xiao Dong Wang. "The Research on the Theory of Flow and Method of Ripple Control of the External Gear Pump Group." Advanced Materials Research 706-708 (June 2013): 1827–30. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.1827.

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In this paper, the theory of flow and method of ripple control of the external gear pump group are studied with two same-parameter external gear pumps which are installed in the form of parallel and different phase. In this thesis, the external gear pump group is known as a low ripple gear pump group, and the theory of ripple control is based on the theory that two periodic and quadratic function curves of different phase superposition can reduce the amplitude variation. According to this method, the thesis starts to analyze the instantaneous flow of the low ripple gear pump group, moreover wh

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37

Zhang, Zhonghua, Song Chen, Shuyun Wang, Junwu Kan, Jianming Wen, and Can Yang. "Performance evaluation and comparison of a serial–parallel hybrid multichamber piezoelectric pump." Journal of Intelligent Material Systems and Structures 29, no. 9 (2018): 1995–2007. http://dx.doi.org/10.1177/1045389x18758181.

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To improve the output capability of piezoelectric pumps, researchers have made an attempt to combine multiple single-chamber pumps either in series or in parallel. In this article, a serial–parallel hybrid multichamber piezoelectric pump is presented. The novel serial–parallel hybrid multichamber piezoelectric pump structure is characterized by the simultaneous occurrence of serial/parallel forms through a combination of synchronous and asynchronous modes of piezoelectric actuators. Moreover, the pump can be operated in multiple working modes to obtain the desired chamber volume and number thr

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38

MINATO, Akihiko. "Analysis of head and torque of centrifugal pumps in two-phase flow." Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 30, no. 7 (1988): 633–42. http://dx.doi.org/10.3327/jaesj.30.633.

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39

de Crecy, F. "Modeling of stratified two-phase flow in pipes, pumps and other devices." International Journal of Multiphase Flow 12, no. 3 (1986): 307–23. http://dx.doi.org/10.1016/0301-9322(86)90010-8.

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40

Royer, Timothy. "Maximum Flow Rates Achievable Through Peripherally Inserted Central Catheters Using Standard Hospital Infusion Pumps." Journal of the Association for Vascular Access 17, no. 2 (2012): 78–83. http://dx.doi.org/10.1016/j.java.2012.05.005.

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Abstract Purpose: To determine maximum flow rates through peripherally inserted central catheters (PICCs) using a standard hospital infusion pump. Background: Two questions asked with the use of PICCs and flow rates are (1) can a PICC be used to give nonemergent fluid boluses, and (2) can standard hospital infusion pumps develop enough pressure to rupture a catheter? Methods: New PICCs of different brands and gauges were gathered. Six standard hospital infusion pumps and tubing of the same brand and model were used. The pressure sensor was set at 600 mm Hg. The pumps were connected through the

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41

Wang, Zhineng, Yong Kang, Xiaochuan Wang, Deng Li, and Dong Hu. "Investigating the flow characteristics of air-lift pumps operating in gas–liquid two-phase flow." Chinese Journal of Chemical Engineering 26, no. 2 (2018): 219–27. http://dx.doi.org/10.1016/j.cjche.2017.09.011.

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42

Hundshagen, Markus, Michael Mansour, Dominique Thévenin, and Romuald Skoda. "3D simulation of gas-laden liquid flows in centrifugal pumps and the assessment of two-fluid CFD methods." Experimental and Computational Multiphase Flow 3, no. 3 (2020): 186–207. http://dx.doi.org/10.1007/s42757-020-0080-4.

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Abstract An assessment of a two-fluid model assuming a continuous liquid and a dispersed gas phase for 3D computational fluid dynamics (CFD) simulations of gas/liquid flow in a centrifugal research pump is performed. A monodisperse two-fluid model, in conjunction with a statistical eddy-viscosity turbulence model, is utilized. By a comprehensive measurement database, a thorough assessment of model inaccuracies is enabled. The results on a horizontal diffuser flow reveal that the turbulence model is one main limitation of simulation accuracy for gas/liquid flows. Regarding pump flows, distincti

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Wang, Biaobiao, Haoyang Zhang, Fanjie Deng, Chenguang Wang, and Qiaorui Si. "Effect of Short Blade Circumferential Position Arrangement on Gas-Liquid Two-Phase Flow Performance of Centrifugal Pump." Processes 8, no. 10 (2020): 1317. http://dx.doi.org/10.3390/pr8101317.

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In order to study the internal flow characteristics of centrifugal pumps with a split impeller under gas-liquid mixed transportation conditions, this paper conducted a steady calculation of the flow field in the centrifugal pump under the conditions of different inlet gas volume fractions based on the Eulerian-Eulerian heterogeneous flow model, using air and water as the working media and the Schiller Nauman model for the interphase resistance. This paper takes a low specific speed centrifugal pump as the research object, through the controlling variables, using the same pump body structure an

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Ali, Asad, Jianping Yuan, Fanjie Deng, et al. "Research Progress and Prospects of Multi-Stage Centrifugal Pump Capability for Handling Gas–Liquid Multiphase Flow: Comparison and Empirical Model Validation." Energies 14, no. 4 (2021): 896. http://dx.doi.org/10.3390/en14040896.

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The working capability of multi-stage pumps, such as electrical submersible pumps (ESPs) handling multiphase flow, has always been a big challenge for petroleum industries. The major problem is associated with the agglomeration of gas bubbles inside ESP-impellers, causing pump performance degradation ranging from mild to severe deterioration (surging/gas pockets). Previous literature showed that the two-phase performance of ESPs is greatly affected by gas involvement, rotational speed, bubble size, and fluid viscosity. Thus, it is necessary to understand which parameter is actually accountable

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Ahmai, Somayeh, and Ahmed Al-Makky. "Simulation of two-phase flow in elbow with problem solving." International Journal of Modern Physics C 25, no. 12 (2014): 1441007. http://dx.doi.org/10.1142/s0129183114410071.

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Multiphase flows occurring in circular curved pipes exhibit important physical phenomena.They are characterized by a large pressure drop and are composed of different phases. In the past, erosion–corrosion was measured through the use of experimental methods. Today numerical simulation models provide a more in depth look into the problem of erosion. Solid particle erosion is of major concern in the industrial engineering sector. In this study, erosion occurring in a (90)-degree elbow has been simulated. The generated two-dimensional data was done through the use of the Commercial software ANSY

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Zhou, Weidong, Zhimei Zhao, T. S. Lee, and S. H. Winoto. "Investigation of Flow Through Centrifugal Pump Impellers Using Computational Fluid Dynamics." International Journal of Rotating Machinery 9, no. 1 (2003): 49–61. http://dx.doi.org/10.1155/s1023621x0300006x.

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With the aid of computational fluid dynamics, the complex internal flows in water pump impellers can be well predicted, thus facilitating the design of pumps. This article describes the three-dimensional simulation of internal flow in three different types of centrifugal pumps (one pump has four straight blades and the other two have six twisted blades). A commercial three-dimensional Navier-Stokes code called CFX, with a standardk–εtwo-equation turbulence model was used to simulate the problem under examination. In the calculation, the finite-volume method and an unstructured grid system were

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V. S., Shagapov, Borodin S. L., Gubaidullin A. A., Duong Ngoc Hai, and Musakaev N. G. "The theoretical research of an upward two-phase flow with phase's changes in a vertical well." Vietnam Journal of Mechanics 32, no. 4 (2010): 211–21. http://dx.doi.org/10.15625/0866-7136/32/4/290.

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By methods of mechanics of multiphase systems the mathematical model describing an upward gas-and-oil flow in a vertical well is constructed. The model considers phase's changes, deposition of oil paraffin on the elevating column's walls of the well, influence of an installation of electrical centrifugal pumps on parameters of the gas-and-oil flow, and also heat exchange of the well with surrounding rock. It is shown, that at the using of an installation of electrical centrifugal pumps and variation of its metering characteristic, depth of its setting, it is possible to achieve the optimum tem

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Dmitrieva, O. Yu, A. S. Buchnev, A. A. Drobyshev, and G. P. Itkin. "Hemolysis research of implantable axial flow pump for two -step heart transplantation in children." Russian Journal of Transplantology and Artificial Organs 19, no. 1 (2017): 22–27. http://dx.doi.org/10.15825/1995-1191-2017-1-22-27.

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Introduction.One of the main indicators characterizing mechanical circulatory support devices (artificial valve, implantable pumps, etc.) is trauma of blood cells. Therefore, while developing new pumps, one of the key studies in vitro is to evaluate blood hemolysis. For an objective hemolysis analysis of pump it is required to create a standardized methodology of hemolysis studies. The object of the study in this paper is implantable axial pump DON for two-step heart transplantation in children.The aimof study is to develop a standardized methodology of hemolysis studies of blood pumps and to

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Zhang, Renhui, Lei Tian, Guangqiang Guo, and Xuebing Chen. "Gas-liquid two-phase flow in the axial clearance of liquid-ring pumps." Journal of Mechanical Science and Technology 34, no. 2 (2020): 791–800. http://dx.doi.org/10.1007/s12206-020-0127-2.

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Monte Verde, William, Jorge Luiz Biazussi, Natache Arrifano Sassim, and Antonio Carlos Bannwart. "Experimental study of gas-liquid two-phase flow patterns within centrifugal pumps impellers." Experimental Thermal and Fluid Science 85 (July 2017): 37–51. http://dx.doi.org/10.1016/j.expthermflusci.2017.02.019.

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