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Статті в журналах з теми "Liquid-liquid flows"

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Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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1

Vempati, Bhadraiah, Mahesh V. Panchagnula, Alparslan Öztekin, and Sudhakar Neti. "Numerical Investigation of Liquid-Liquid Coaxial Flows." Journal of Fluids Engineering 129, no. 6 (December 8, 2006): 713–19. http://dx.doi.org/10.1115/1.2734223.

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Анотація:
This paper presents numerical results of the interfacial dynamics of axisymmetric liquid-liquid flows when the denser liquid is injected with a parabolic inlet velocity profile into a coflowing lighter fluid. The flow dynamics are studied as a function of the individual phase Reynolds numbers, viscosity ratio, velocity ratio, Bond number, and capillary number. Unsteady, axisymmetric flows of two immiscible fluids have been studied using commercial software, FLUENT® with the combination of volume of fluid (VOF) and continuous surface force (CSF) methods. The flows have been categorized as “flow-accelerated regime (FAR) and “flow-decelerated regime” (FDR) based on acceleration/deceleration of the injected fluid. The injected jet diameter decreases when the average inlet velocity ratio is less than unity. The outer fluid velocity has a significant effect on the shape and evolution of the jet as it progresses downstream. As the outer liquid flow rate is increased, the intact jet length is stretched to longer lengths while the jet radius is reduced due to interfacial stresses. The jet radius appears to increase with increasing viscosity ratio and ratio of Bond and capillary numbers. The results of numerical simulations using FLUENT agree well with experimental measurements and the far-field self-similar solution.
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2

Angeli, P., and G. F. Hewitt. "Pressure gradient in horizontal liquid–liquid flows." International Journal of Multiphase Flow 24, no. 7 (November 1999): 1183–203. http://dx.doi.org/10.1016/s0301-9322(98)00006-8.

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3

Ioannou, Karolina, Ole Jorgen Nydal, and Panagiota Angeli. "Phase inversion in dispersed liquid–liquid flows." Experimental Thermal and Fluid Science 29, no. 3 (March 2005): 331–39. http://dx.doi.org/10.1016/j.expthermflusci.2004.05.003.

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4

Vigneaux, P., P. Chenais, and J. P. Hulin. "Liquid-liquid flows in an inclined pipe." AIChE Journal 34, no. 5 (May 1988): 781–89. http://dx.doi.org/10.1002/aic.690340508.

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5

SOTOWA, Ken-Ichiro. "Gas-Liquid and Liquid-Liquid Multiphase Flows and Microreaction Technology." JAPANESE JOURNAL OF MULTIPHASE FLOW 27, no. 3 (2013): 258–65. http://dx.doi.org/10.3811/jjmf.27.258.

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6

Hewitt, Geoffrey, C. P. Hale, B. Hu, W. L. Wong, and S. M. Richardson. "GAMMAS AND X-RAY TOMOGRAPHY OF LIQUID-LIQUID AND GAS-LIQUID-LIQUID FLOWS." Multiphase Science and Technology 19, no. 3 (2007): 241–67. http://dx.doi.org/10.1615/multscientechn.v19.i3.30.

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7

Durst, F., B. Schönung, K. Selanger, and M. Winter. "Bubble-driven liquid flows." Journal of Fluid Mechanics 170 (September 1986): 53–82. http://dx.doi.org/10.1017/s0022112086000800.

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Анотація:
Detailed information is provided in this paper on the physics of momentum transfer in bubble-driven liquid flows. Experimental information is obtained on the flow around bubbles and on the axisymmetric bubble-driven liquid flow inside liquid-filled cylinders located with their axes in the vertical direction. A laser-Doppler anemometer extended for particulate two-phase flows is employed for these measurements to yield local fluid velocity information as well as the rise velocity of bubbles. The bubble top radius and the bubble shape were also found from these measurements.Utilizing experimentally gained information and employing the basic equations for particulate two-phase flows, permits finite difference equations to be formulated that allow bubble-driven liquid flows to be computed. Results are presented for boundary conditions corresponding to those of the experimental studies. Comparisons of numerical and experimental results are shown to be in good agreement. This is taken as a justification to employ the developed computer programs to carry out parameter studies for bubble-driven liquid flow inside circular cylinders. Results of these studies are presented and discussed.
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8

Richardson, S. M. "Choking of liquid flows." Journal of Fluid Mechanics 199 (February 1989): 563–68. http://dx.doi.org/10.1017/s0022112089000480.

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Анотація:
It is well-known that laminar flow of a liquid in a duct is predicted to choke if the viscosity of the liquid increases exponentially with increasing pressure. In other words, the pressure drop in the duct is predicted to become unbounded when the volumetric flow rate reaches a critical finite value. Choking is not observed in practice, however: the reason why is investigated here. It is shown that choking is always predicted to occur if the viscosity is independent of temperature or heat generation by viscous dissipation is neglected. If the viscosity decreases exponentially with increasing temperature and heat generation is not neglected, however, and if the temperature field is fully developed or if the flow is adiabatic, it is shown that choking is predicted not to occur.
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9

Raj, Richa, Nikita Mathur, and Vivek V. Buwa. "Numerical Simulations of Liquid−Liquid Flows in Microchannels." Industrial & Engineering Chemistry Research 49, no. 21 (November 3, 2010): 10606–14. http://dx.doi.org/10.1021/ie100626a.

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10

Shi, Jing, and Hoi Yeung. "Characterization of liquid-liquid flows in horizontal pipes." AIChE Journal 63, no. 3 (August 26, 2016): 1132–43. http://dx.doi.org/10.1002/aic.15452.

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11

LeMartelot, S., B. Nkonga, and R. Saurel. "Liquid and liquid–gas flows at all speeds." Journal of Computational Physics 255 (December 2013): 53–82. http://dx.doi.org/10.1016/j.jcp.2013.08.001.

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12

INAMURO, Takaji. "Lattice Boltzmann Simulations of Liquid-Liquid and Liquid-Gas Two-Phase Flows." Proceedings of Conference of Kansai Branch 2001.76 (2001): _9–9_—_9–13_. http://dx.doi.org/10.1299/jsmekansai.2001.76._9-9_.

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13

Hu, Ying-ying, and Zheng-ming Huang. "Coaxial liquid-liquid flows in tubes with limited length." Journal of Zhejiang University-SCIENCE A 7, no. 3 (March 2006): 347–51. http://dx.doi.org/10.1631/jzus.2006.a0347.

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14

Morud, John C. "Dilute gas-liquid flows with liquid films on walls." Progress in Computational Fluid Dynamics, An International Journal 7, no. 2/3/4 (2007): 170. http://dx.doi.org/10.1504/pcfd.2007.013009.

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15

Jana, A. K., T. K. Mandal, D. P. Chakrabarti, G. Das, and P. K. Das. "An optical probe for liquid–liquid two-phase flows." Measurement Science and Technology 18, no. 5 (April 4, 2007): 1563–75. http://dx.doi.org/10.1088/0957-0233/18/5/048.

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16

Lamadie, Fabrice, Laurent Bruel, and Marc Himbert. "Digital holographic measurement of liquid–liquid two-phase flows." Optics and Lasers in Engineering 50, no. 12 (December 2012): 1716–25. http://dx.doi.org/10.1016/j.optlaseng.2012.07.010.

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17

Mac Giolla Eain, Marc, Vanessa Egan, and Jeff Punch. "Local Nusselt number enhancements in liquid–liquid Taylor flows." International Journal of Heat and Mass Transfer 80 (January 2015): 85–97. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2014.09.009.

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18

Xue, ZL, XS Wang, FJ Hong, P. Zhang, and H. H. Qiu. "INTERFACIAL FILM DYNAMICS OF OSCILLATING PLUG/SLUG FLOWS IN MINI/MICRO CHANNELS(Liquid Flow)." Proceedings of the International Conference on Jets, Wakes and Separated Flows (ICJWSF) 2005 (2005): 131–36. http://dx.doi.org/10.1299/jsmeicjwsf.2005.131.

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19

Fells, Alex, Andrea De Santis, Marco Colombo, Daniel W. Theobald, Michael Fairweather, Frans Muller, and Bruce Hanson. "Predicting Mass Transfer in Liquid–Liquid Extraction Columns." Processes 10, no. 5 (May 12, 2022): 968. http://dx.doi.org/10.3390/pr10050968.

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Анотація:
In this work, the GEneralised Multifluid Modelling Approach (GEMMA) is applied to the simulation of liquid–liquid extraction in a Rotating Disc Column (RDC) and a Pulsed Sieve-plate Extraction Column (PSEC). A mass transfer modelling methodology is developed, in which the multiphase flows, droplet size distribution and dispersed phase holdup predicted with computational fluid dynamics are coupled to mass transfer correlations to predict the overall mass transfer. The numerical results for the stage-averaged dispersed phase holdup, Sauter mean droplet diameter and axial solute concentration in the RDC and PSEC agree with experimental observations. The proposed modelling method provides an accurate predictive tool for complex multiphase flows, such as those observed in intensified liquid–liquid extraction, and provides an alternative approach to column design using empirical correlations or pilot plant study.
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20

Brauner, Neima. "The prediction of dispersed flows boundaries in liquid–liquid and gas–liquid systems." International Journal of Multiphase Flow 27, no. 5 (May 2001): 885–910. http://dx.doi.org/10.1016/s0301-9322(00)00056-2.

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21

Wardle, Kent E., and Henry G. Weller. "Hybrid Multiphase CFD Solver for Coupled Dispersed/Segregated Flows in Liquid-Liquid Extraction." International Journal of Chemical Engineering 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/128936.

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Анотація:
The flows in stage-wise liquid-liquid extraction devices include both phase segregated and dispersed flow regimes. As a additional layer of complexity, for extraction equipment such as the annular centrifugal contactor, free-surface flows also play a critical role in both the mixing and separation regions of the device and cannot be neglected. Traditionally, computional fluid dynamics (CFD) of multiphase systems is regime dependent—different methods are used for segregated and dispersed flows. A hybrid multiphase method based on the combination of an Eulerian multifluid solution framework (per-phase momentum equations) and sharp interface capturing using Volume of Fluid (VOF) on selected phase pairs has been developed using the open-source CFD toolkit OpenFOAM. Demonstration of the solver capability is presented through various examples relevant to liquid-liquid extraction device flows including three-phase, liquid-liquid-air simulations in which a sharp interface is maintained between each liquid and air, but dispersed phase modeling is used for the liquid-liquid interactions.
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22

Hanratty, Thomas J. "FULLY DEVELOPED GAS-LIQUID FLOWS." Multiphase Science and Technology 15, no. 1-4 (2003): 21–31. http://dx.doi.org/10.1615/multscientechn.v15.i1-4.20.

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23

Gan, Zaihui, Xianpeng Hu, and Fanghua Lin. "Defects in Liquid Crystal Flows." SIAM Journal on Mathematical Analysis 54, no. 2 (March 14, 2022): 1695–717. http://dx.doi.org/10.1137/21m1396010.

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24

Liu, Chun, and Noel J. Walkington. "Approximation of Liquid Crystal Flows." SIAM Journal on Numerical Analysis 37, no. 3 (January 2000): 725–41. http://dx.doi.org/10.1137/s0036142997327282.

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25

IBRAHIM, MOUNIR B., and LINDON C. THOMAS. "TURBULENT VARIABLE PROPERTY LIQUID FLOWS." Chemical Engineering Communications 54, no. 1-6 (May 1987): 211–23. http://dx.doi.org/10.1080/00986448708911907.

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26

Girfoglio, M., F. De Rosa, G. Coppola, and L. de Luca. "Unsteady critical liquid sheet flows." Journal of Fluid Mechanics 821 (May 18, 2017): 219–47. http://dx.doi.org/10.1017/jfm.2017.241.

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Анотація:
The unsteady global dynamics of a gravitational liquid sheet interacting with a one-sided adjacent air enclosure (commonly referred to as nappe oscillation configuration) is addressed under the assumptions of potential flow and the presence of surface tension effects. From a theoretical viewpoint the problem is challenging, because from previous literature it is known that the equation governing the evolution of small disturbances exhibits a singularity at the vertical station where the local flow velocity equals the capillary wave velocity (local critical condition), although the solution to the problem has not yet been found. The equation governing the local dynamics resembles one featuring the forced vibrations of a string of finite length, formulated in the reference frame moving with the flow velocity, and exhibits both slow and fast characteristic curves. From the global system perspective the nappe behaves as a driven damped spring–mass oscillator, where the inertial effects are linked to the liquid sheet mass and the spring is represented by the equivalent stiffness of the air enclosure acting on the displacement of the compliant nappe centreline. A suited procedure is developed to remove the singularity of the integro-differential operator for Weber numbers less than unity. The investigation is carried out by means of a modal (i.e. time asymptotic) linear approach, which is corroborated by numerical simulations of the governing equation and supported by systematic comparisons with experimental data from the literature, available in the supercritical regime only. As regards the critical regime for the unit Weber number, the major theoretical result is a sharp increase in oscillation frequency as the flow Weber number is gradually reduced from supercritical to subcritical values due to the shift of the prevailing mode from the slow one to the fast one.
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27

Chen, Tai-Ying, Pierre Desir, Mauro Bracconi, Basudeb Saha, Matteo Maestri, and Dionisios G. Vlachos. "Liquid–Liquid Microfluidic Flows for Ultrafast 5-Hydroxymethyl Furfural Extraction." Industrial & Engineering Chemistry Research 60, no. 9 (February 23, 2021): 3723–35. http://dx.doi.org/10.1021/acs.iecr.0c05759.

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28

Pulvirenti, B., B. Rostami, G. Puccetti, and G. L. Morini. "Determination of droplet contours in liquid-liquid flows within microchannels." Journal of Physics: Conference Series 655 (November 16, 2015): 012028. http://dx.doi.org/10.1088/1742-6596/655/1/012028.

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29

Wegmann, Adrian, and Philipp Rudolf von Rohr. "Two phase liquid–liquid flows in pipes of small diameters." International Journal of Multiphase Flow 32, no. 8 (August 2006): 1017–28. http://dx.doi.org/10.1016/j.ijmultiphaseflow.2006.04.001.

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30

Tarantsev, K. V. "Study of electrohydrodynamic flows at a liquid–liquid phase interface." Chemical and Petroleum Engineering 46, no. 1-2 (May 2010): 64–68. http://dx.doi.org/10.1007/s10556-010-9292-y.

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31

Edomwonyi-Otu, L. C., M. Chinaud, and P. Angeli. "Effect of drag reducing polymer on horizontal liquid–liquid flows." Experimental Thermal and Fluid Science 64 (June 2015): 164–74. http://dx.doi.org/10.1016/j.expthermflusci.2015.02.018.

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32

Celik, I., A. Badeau, S. Kandil, W. Wilson, and P. Chang. "Modeling of droplet formation in stratified immiscible liquid-liquid flows." Journal of Hydraulic Research 43, no. 1 (January 2005): 86–97. http://dx.doi.org/10.1080/00221680509500113.

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33

Lovick, J., and P. Angeli. "Droplet size and velocity profiles in liquid–liquid horizontal flows." Chemical Engineering Science 59, no. 15 (August 2004): 3105–15. http://dx.doi.org/10.1016/j.ces.2004.04.035.

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34

Ghaini, Aras, Axel Mescher, and David W. Agar. "Hydrodynamic studies of liquid–liquid slug flows in circular microchannels." Chemical Engineering Science 66, no. 6 (March 2011): 1168–78. http://dx.doi.org/10.1016/j.ces.2010.12.033.

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35

SAKODA, Kenichi, Akira SOU, and Akio TOMIYAMA. "A Hybrid Method for Predicting Dispersed Gas-Liquid and Liquid-Liquid Multi-Phase Flows." Progress in Multiphase Flow Research 1 (2006): 163–70. http://dx.doi.org/10.3811/pmfr.1.163.

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36

Verma, Raj Kumar, and Sumana Ghosh. "Two-Phase Flow in Miniature Geometries: Comparison of Gas-Liquid and Liquid-Liquid Flows." ChemBioEng Reviews 6, no. 1 (February 2019): 5–16. http://dx.doi.org/10.1002/cben.201800016.

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37

Hohne, Thomas. "ICONE23-1413 A DROPLET ENTRAINMENT MODEL FOR HORIZONTAL GAS/LIQUID FLOWS." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23 (2015): _ICONE23–1—_ICONE23–1. http://dx.doi.org/10.1299/jsmeicone.2015.23._icone23-1_192.

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38

Cunningham, R. G. "Liquid Jet Pumps for Two-Phase Flows." Journal of Fluids Engineering 117, no. 2 (June 1, 1995): 309–16. http://dx.doi.org/10.1115/1.2817147.

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Анотація:
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 throat, and jet loss is included in the efficiency equations. Comparisons are made with published test data for liquid-jet liquid pumps and for liquid-jet gas compressors. The LJGL model is used to explore jet pump responses to two-phase secondary flows, nozzle-to-throat area ratio, and primary-jet velocity. The results are shown in terms of performance curves versus flow ratios. Predicted peak efficiencies are approximately 50 percent. Under severe operating conditions, LJGL pump performance curves exhibit maximum-flow ratios or cut-offs. Cut-off occurs when two-phase secondary-flow streams attain sonic values at the entry of the mixing throat. A dimensionless number correlates flow-ratio cut-offs with pump geometry and operating conditions. Throat-entry choking of the secondary flow can be predicted, hence avoided, in designing jet pumps to handle two-phase fluids.
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39

Yue, Jun, Evgeny V. Rebrov, and Jaap C. Schouten. "Gas–liquid–liquid three-phase flow pattern and pressure drop in a microfluidic chip: similarities with gas–liquid/liquid–liquid flows." Lab on a Chip 14, no. 9 (2014): 1632. http://dx.doi.org/10.1039/c3lc51307f.

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40

AOTA, Arata, Akihide HIBARA, Yasuhiko SUGII, and Takehiko KITAMORI. "Shape of the Liquid–Liquid Interface in Micro Counter-Current Flows." Analytical Sciences 28, no. 1 (2012): 9. http://dx.doi.org/10.2116/analsci.28.9.

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41

Kuhn, Simon, Ryan L. Hartman, Mahmooda Sultana, Kevin D. Nagy, Samuel Marre, and Klavs F. Jensen. "Teflon-Coated Silicon Microreactors: Impact on Segmented Liquid−Liquid Multiphase Flows." Langmuir 27, no. 10 (May 17, 2011): 6519–27. http://dx.doi.org/10.1021/la2004744.

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42

Fujita, Hideomi, Toshio Ohara, Masafumi Hirota, Hiroyuki Furuta, and Hisashi Sugiyama. "Gas-Liquid Flows in Narrow Flat Channels. Influences of Liquid Properties." Transactions of the Japan Society of Mechanical Engineers Series B 61, no. 592 (1995): 4412–19. http://dx.doi.org/10.1299/kikaib.61.4412.

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43

VERGUET, STÉPHANE, CHUANHUA DUAN, ALBERT LIAU, VEYSEL BERK, JAMIE H. D. CATE, ARUN MAJUMDAR, and ANDREW J. SZERI. "Mechanics of liquid–liquid interfaces and mixing enhancement in microscale flows." Journal of Fluid Mechanics 652 (May 19, 2010): 207–40. http://dx.doi.org/10.1017/s0022112009994113.

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Анотація:
Experimental work on mixing in microfluidic devices has been of growing importance in recent years. Interest in probing reaction kinetics faster than the minute or hour time scale has intensified research in designing microchannel devices that would allow the reactants to be mixed on a time scale faster than that of the reaction. Particular attention has been paid to the design of microchannels in order to enhance the advection phenomena in these devices. Ultimately, in vitro studies of biological reactions can now be performed in conditions that reflect their native intracellular environments. Liau et al. (Anal. Chem., vol. 77, 2005, p. 7618) have demonstrated a droplet-based microfluidic mixer that induces improved chaotic mixing of crowded solutions in milliseconds due to protrusions (‘bumps’) on the microchannel walls. Liau et al. (2005) have shown it to be possible to mix rapidly plugs of highly concentrated protein solutions such as bovine hemoglobin and bovine serum albumin. The present work concerns an analysis of the underlying mechanisms of shear stress transfer at liquid–liquid interfaces and associated enhanced mixing arising from the protrusions along the channel walls. The role of non-Newtonian rheology and surfactants is also considered within the mixing framework developed by Aref, Ottino and Wiggins in several publications. Specifically, we show that proportional thinning of the carrier fluid lubrication layer at the bumps leads to greater advection velocities within the plugs, which enhances mixing. When the fluid within the plugs is Newtonian, mixing will be enhanced by the bumps if they are sufficiently close to one another. Changing either the rheology of the fluid within the plugs (from Newtonian to non-Newtonian) or modifying the mechanics of the carrier fluid-plug interface (by populating it with insoluble surfactants) alters the mixing enhancement.
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44

Rajesh, V. M., and Vivek V. Buwa. "Experimental characterization of gas–liquid–liquid flows in T-junction microchannels." Chemical Engineering Journal 207-208 (October 2012): 832–44. http://dx.doi.org/10.1016/j.cej.2012.07.082.

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45

Kim, Namwon, Michael C. Murphy, Steven A. Soper, and Dimitris E. Nikitopoulos. "Liquid–liquid segmented flows in polycarbonate microchannels with cross-sectional expansions." International Journal of Multiphase Flow 58 (January 2014): 83–96. http://dx.doi.org/10.1016/j.ijmultiphaseflow.2013.09.002.

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46

Chinaud, Maxime, Kyeong Hyeon Park, and Panagiota Angeli. "Flow pattern transition in liquid-liquid flows with a transverse cylinder." International Journal of Multiphase Flow 90 (April 2017): 1–12. http://dx.doi.org/10.1016/j.ijmultiphaseflow.2016.11.011.

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Epstein, Michael, James P. Burelbach, Hans K. Fauske, Shigenobu Kubo, and Kazuya Koyama. "Liquid–liquid interface stability in accelerating and constant-velocity tube flows." Nuclear Engineering and Design 210, no. 1-3 (December 2001): 37–51. http://dx.doi.org/10.1016/s0029-5493(01)00437-x.

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Rajesh, V. M., and Vivek V. Buwa. "Volume-of-fluid simulations of gas-liquid-liquid flows in minichannels." Chemical Engineering Journal 345 (August 2018): 688–705. http://dx.doi.org/10.1016/j.cej.2018.01.050.

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Roumpea, Evangelia, Maxime Chinaud, and Panagiota Angeli. "Experimental investigations of non-Newtonian/Newtonian liquid-liquid flows in microchannels." AIChE Journal 63, no. 8 (March 27, 2017): 3599–609. http://dx.doi.org/10.1002/aic.15704.

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Hu, Bin, Omar K. Matar, Geoffrey F. Hewitt, and Panagiota Angeli. "Population balance modelling of phase inversion in liquid–liquid pipeline flows." Chemical Engineering Science 61, no. 15 (August 2006): 4994–97. http://dx.doi.org/10.1016/j.ces.2006.03.053.

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