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Journal articles on the topic 'Non-wetting Fluid'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Li, Jimmy X., Reza Rezaee, Tobias M. Müller, and Mohammad Sarmadivaleh. "Elastic waves in porous media saturated with non-wetting fluid." APPEA Journal 60, no. 1 (2020): 315. http://dx.doi.org/10.1071/aj19196.

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Elastic waves have widely been used as a non-destructive probing method in oilfield exploration and development, and the most well-known applications are in seismic exploration and borehole sonic logging. For waves in porous media, it is popular to use the Biot theory, which incorporates the wave-induced global flow, accounting for the frictional attenuation. The Biot theory assumes that the fluid is wetting to the solid matrix. However, the fluid is not always wetting the rock in real reservoirs. It was previously revealed that a non-wetting fluid parcel tends to slip on the solid wall pore b

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Sadeghi, Mohammad, Hamed Sadeghi, and Clarence E. Choi. "A lattice Boltzmann study of dynamic immiscible displacement mechanisms in pore doublets." MATEC Web of Conferences 337 (2021): 02011. http://dx.doi.org/10.1051/matecconf/202133702011.

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An advanced chromodynamics, Rothmann-Keller (RK) type lattice Boltzmann model (LBM) is used in this study. The new model benefits from high stability and capability of independently setting the interfacial tension of the fluids as an input parameter. In addition, the model is coupled with a wall-density approach to simulate the hydrophilic or hydrophobic properties of wall surfaces. Finally, injection of a wetting (non-wetting) fluid in a pore doublet geometry which is initially filled with non-wetting (wetting) fluid is simulated. The results of simulation reveal the capability of RK-LBM to s

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3

Gao, Cheng, Rui-Na Xu, and Pei-Xue Jiang. "Pore-scale numerical investigations of fluid flow in porous media using lattice Boltzmann method." International Journal of Numerical Methods for Heat & Fluid Flow 25, no. 8 (2015): 1957–77. http://dx.doi.org/10.1108/hff-07-2014-0202.

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Purpose – Lattice Boltzmann method (LBM) is employed to explore friction factor of single-phase fluid flow through porous media and the effects of local porous structure including geometry of grains in porous media and specific surface of porous media on two-phase flow dynamic behavior, phase distribution and relative permeability. The paper aims to discuss this issue. Design/methodology/approach – The 3D single-phase LBM model and the 2D multi-component multi-phase Shan-Chen LBM model (S-C model) are developed for fluid flow through porous media. For the solid site, the bounce back scheme is

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4

Parmigiani, A., C. Huber, O. Bachmann, and B. Chopard. "Pore-scale mass and reactant transport in multiphase porous media flows." Journal of Fluid Mechanics 686 (September 30, 2011): 40–76. http://dx.doi.org/10.1017/jfm.2011.268.

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AbstractReactive processes associated with multiphase flows play a significant role in mass transport in unsaturated porous media. For example, the effect of reactions on the solid matrix can affect the formation and stability of fingering instabilities associated with the invasion of a buoyant non-wetting fluid. In this study, we focus on the formation and stability of capillary channels of a buoyant non-wetting fluid (developed because of capillary instabilities) and their impact on the transport and distribution of a reactant in the porous medium. We use a combination of pore-scale numerica

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5

Gu, Qingqing, Haihu Liu, and Yonghao Zhang. "Lattice Boltzmann Simulation of Immiscible Two-Phase Displacement in Two-Dimensional Berea Sandstone." Applied Sciences 8, no. 9 (2018): 1497. http://dx.doi.org/10.3390/app8091497.

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Understanding the dynamic displacement of immiscible fluids in porous media is important for carbon dioxide injection and storage, enhanced oil recovery, and non-aqueous phase liquid contamination of groundwater. However, the process is not well understood at the pore scale. This work therefore focuses on the effects of interfacial tension, wettability, and the viscosity ratio on displacement of one fluid by another immiscible fluid in a two-dimensional (2D) Berea sandstone using the colour gradient lattice Boltzmann model with a modified implementation of the wetting boundary condition. Throu

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6

Chen, Yu, Qinjun Kang, Qingdong Cai, Moran Wang, and Dongxiao Zhang. "Lattice Boltzmann Simulation of Particle Motion in Binary Immiscible Fluids." Communications in Computational Physics 18, no. 3 (2015): 757–86. http://dx.doi.org/10.4208/cicp.101114.150415a.

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AbstractWe combine the Shan-Chen multicomponent lattice Boltzmann model and the link-based bounce-back particle suspension model to simulate particle motion in binary immiscible fluids. The impact of the slightly mixing nature of the Shan-Chen model and the fluid density variations near the solid surface caused by the fluid-solid interaction, on the particle motion in binary fluids is comprehensively studied. Our simulations show that existing models suffer significant fluid mass drift as the particle moves across nodes, and the obtained particle trajectories deviate away from the correct ones

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7

Kiriakidis, D. G., G. H. Neale, and E. Mitsoulis. "Numerical simulations of radial displacement of a wetting fluid by a non-wetting fluid in a porous medium." Journal of Physics A: Mathematical and General 23, no. 21 (1990): 5089–94. http://dx.doi.org/10.1088/0305-4470/23/21/042.

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8

Kiriakidis, D. G., E. Mitsoulis, and G. H. Neale. "Linear displacement of a wetting fluid by an immiscible non-wetting fluid in a porous medium: A predictive algorithm." Canadian Journal of Chemical Engineering 69, no. 2 (1991): 557–63. http://dx.doi.org/10.1002/cjce.5450690222.

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9

Neogi, P. "Condensation of a non-wetting fluid on a solid surface." Journal of Colloid and Interface Science 316, no. 2 (2007): 694–98. http://dx.doi.org/10.1016/j.jcis.2007.08.066.

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10

Vinogradova, Alexandra, Vera Naletova, and Vladimir Turkov. "Magnetic Fluid Bridge between Coaxial Cylinders with a Line Conductor in Case of Wetting." Solid State Phenomena 233-234 (July 2015): 335–38. http://dx.doi.org/10.4028/www.scientific.net/ssp.233-234.335.

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We consider a heavy, incompressible, homogenous, isothermal magnetic fluid between two coaxial cylinders in case of wetting. There is a current-carrying straight wire on the axis of these cylinders. The magnetic fluid is immersed in a non-magnetic liquid with the same density (the case of hydroimponderability). We apply the Langevin law to describe a magnetic fluid magnetization. Using the general analytical solution for any axially symmetric shape of the magnetic fluid free surface in any axisymmetric magnetic field, we investigate the break-up and the rebuilding of the magnetic fluid bridge

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11

Butterfield, D. Jacob, Brian D. Iverson, Daniel Maynes, and Julie Crockett. "Transient heat transfer of impinging jets on superheated wetting and non-wetting surfaces." International Journal of Heat and Mass Transfer 175 (August 2021): 121056. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2021.121056.

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12

Beheshti Pour, Negar, and David B. Thiessen. "Equilibrium configurations of drops or bubbles in an eccentric annulus." Journal of Fluid Mechanics 863 (January 29, 2019): 364–85. http://dx.doi.org/10.1017/jfm.2018.1010.

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The purpose of this paper is to find the zero-gravity equilibrium configurations of liquid drops or bubbles that have sufficient volume to form large-aspect-ratio bridging segments or occluding slugs in the eccentric annulus between two cylinders. In zero gravity, the static problem depends on the contact angle of the fluid segment on the solid support, and two geometric parameters: the radius ratio and the dimensionless distance between the cylinder centres. For both non-wetting and wetting liquids, we find regions of geometric parameter space where only occluding configurations occur, a bist

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13

Vinogradova, Alexandra S., Vladimir A. Turkov, and Vera A. Naletova. "Magnetic fluid bridge between two cones and a cylinder in the magnetic field of a current-carrying wire." EPJ Web of Conferences 185 (2018): 09010. http://dx.doi.org/10.1051/epjconf/201818509010.

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A magnetic fluid (MF) changes its surface shape in the magnetic field of a current-carrying wire while the current is changing. In the present paper, we propose to study a MF bridge which can open or close the channel formed by two cones and a cylinder by imposing the magnetic field of a wire. Numerical modelling of the bridge behavior for different values of MF volumes and currents in the wire is done for two cases: when the MF wets and does not wet surrounding solid boundaries. It is shown that the presence of limiting cones allows the MF to sustain the pressure drop which is much higher in

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14

Tam, Jason, Uwe Erb, and Gisele Azimi. "Non-Wetting Nickel-Cerium Oxide Composite Coatings with Remarkable Wear Stability." MRS Advances 3, no. 29 (2018): 1647–51. http://dx.doi.org/10.1557/adv.2018.55.

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ABSTRACTEngineered non-wetting surfaces inspired by biological species are of interest in the industry due to their potential applications such as water repelling, self-cleaning, anti-icing, anti-corrosion, anti-fouling, and low fluid drag surfaces. However, the adoption of non-wetting surfaces in large scale industrial applications has been hampered by synthesis techniques that are not easily scalable and the limited long term stability and wear robustness of these surfaces in service. In this study, we demonstrate a simple, low cost, and scalable electrochemical technique to produce robust c

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15

Parry, A. O., P. S. Swain, and J. A. Fox. "Fluid adsorption at a non-planar wall: roughness-induced first-order wetting." Journal of Physics: Condensed Matter 8, no. 45 (1996): L659—L666. http://dx.doi.org/10.1088/0953-8984/8/45/001.

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16

Ozimina, Dariusz, Monika Madej, Joanna Kowalczyk, Ewa Ozimina, and Stanislaw Plaza. "Tool wear in dry turning and wet turning with non-toxic cutting fluid." Industrial Lubrication and Tribology 70, no. 9 (2018): 1649–56. http://dx.doi.org/10.1108/ilt-02-2018-0080.

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PurposeThis study aims to determine the properties of a new non-toxic cutting fluid and compared with cutting fluid based on mineral oil.Design/methodology/approachThe tool wear was measured under dry and wet cutting conditions. The non-toxic cutting fluid was compared with cutting fluid based on mineral oil. The experiments were carried out using CTX 310 ECO numerical control lathe. The wear of the cutting tools was measured by means of stereo zoom microscopy (SX80), while the elements were identified through scanning electron microscopy (JSM 7100F). The workpiece surface texture was studied

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17

Parmigiani, Andrea, Paolo Roberto Di Palma, Sébastien Leclaire, Faraz Habib, and Xiang-Zhao Kong. "Characterization of Transport-Enhanced Phase Separation in Porous Media Using a Lattice-Boltzmann Method." Geofluids 2019 (May 14, 2019): 1–13. http://dx.doi.org/10.1155/2019/5176410.

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Phase separation of formation fluids in the subsurface introduces hydrodynamic perturbations which are critical for mass and energy transport of geofluids. Here, we present pore-scale lattice-Boltzmann simulations to investigate the hydrodynamical response of a porous system to the emergence of non-wetting droplets under background hydraulic gradients. A wide parameter space of capillary number and fluid saturation is explored to characterize the droplet evolution, the droplet size and shape distribution, and the capillary-clogging patterns. We find that clogging is favored by high capillary s

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18

Hasnain, A., E. Segura, and K. Alba. "Buoyant displacement flow of immiscible fluids in inclined pipes." Journal of Fluid Mechanics 824 (July 10, 2017): 661–87. http://dx.doi.org/10.1017/jfm.2017.367.

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We experimentally study the iso-viscous displacement flow of two immiscible Newtonian fluids in an inclined pipe. The fluids have the same viscosity but different densities. The displacing fluid is denser than the displaced fluid and is placed above the displaced fluid (i.e. a density-unstable configuration) in a pipe with small diameter-to-length ratio ($\unicode[STIX]{x1D6FF}\ll 1$). In the limit considered, six dimensionless groups describe these flows: the pipe inclination angle, $\unicode[STIX]{x1D6FD}$, an Atwood number, $At$, a Reynolds number, $Re$, a densimetric Froude number, $Fr$, a

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19

Zhang, Jingtao, Haipeng Zhang, Donghee Lee, Sangjin Ryu, and Seunghee Kim. "Experimental study: Effect of pore geometry and structural heterogeneity on the repetitive two-phase fluid flow in porous media and its implications to PM-CAES." E3S Web of Conferences 205 (2020): 07010. http://dx.doi.org/10.1051/e3sconf/202020507010.

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Compressed air energy storage in porous media (PM-CAES) has recently been suggested as a promising alternative to existing CAES plants. PM-CAES incurs repetitive two-phase fluid flow caused by the cyclic injection and withdrawal of air to/from the porous medium that is initially saturated with the formation water during the operation. Therefore, predicting the overall macro-scale performance of porous media for energy storage requires a better understanding of repetitive two-phase fluid flow in the pore network at the fundamental pore-scale level. To answer this need, we conducted an experimen

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20

Zhang, Jingtao, Haipeng Zhang, Donghee Lee, Sangjin Ryu, and Seunghee Kim. "Study on the effect of pore-scale heterogeneity and flow rate during repetitive two-phase fluid flow in microfluidic porous media." Petroleum Geoscience 27, no. 2 (2021): petgeo2020–062. http://dx.doi.org/10.1144/petgeo2020-062.

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Various energy recovery, storage, conversion and environmental operations may involve repetitive fluid injection and thus, cyclic drainage–imbibition processes. We conducted an experimental study for which polydimethylsiloxane (PDMS)-based micromodels were fabricated with three different levels of pore-space heterogeneity (coefficient of variation, where COV = 0, 0.25 and 0.5) to represent consolidated and/or partially consolidated sandstones. A total of 10 injection-withdrawal cycles were applied to each micromodel at two different flow rates (0.01 and 0.1 ml min−1). The experimental results

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21

Seyyedi, Mojtaba, Ausama Giwelli, Cameron White, Lionel Esteban, Michael Verrall, and Ben Clennell. "Changes in multi-phase flow properties of carbonate porous media during CO2 injection." APPEA Journal 60, no. 2 (2020): 672. http://dx.doi.org/10.1071/aj19061.

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Impacts of fluid–rock geochemical reactions occurring during CO2 injection into underground formations, including CO2 geosequestration, on porosity and single-phase permeability are well documented. However, their impacts on pore structure and multi-phase flow behaviour of porous media and, therefore, on CO2 injectivity and residual trapping potential, are yet unknown. We found that CO2-saturated brine–rock interactions in a carbonate rock led to a decrease in the sweep efficiency of the non-wetting phase (gas) during primary drainage. Furthermore, they led to an increase in the relative perme

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22

Dias, Madalena M., and Alkiviades C. Payatakes. "Network models for two-phase flow in porous media Part 2. Motion of oil ganglia." Journal of Fluid Mechanics 164 (March 1986): 337–58. http://dx.doi.org/10.1017/s0022112086002586.

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The behaviour of non-wetting ganglia undergoing immiscible displacement in a porous medium is studied with the help of a theoretical simulator. The porous medium is represented by a network of randomly sized unit cells of the constricted-tube type. The fluid of a non-wetting ganglion is in contact with the wetting fluid at menisci which are assumed to be spherical cups. The flow in every constricted unit cell occupied by a single fluid is modelled as flow in a sinusoidal tube. The flow in every unit cell that contains a meniscus and portions of both fluids is treated with a combination of a Wa

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23

GOTO, Hiroki, Tomochika TOKUNAGA, Hajime YAMAMOTO, Toyokazu OGAWA, and Tomoyuki AOKI. "Progressive Failure of Rock due to Infiltration of Compressible Non-wetting Phase Fluid." Journal of Geography (Chigaku Zasshi) 122, no. 5 (2013): 807–21. http://dx.doi.org/10.5026/jgeography.122.807.

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24

Datta, Sujit S., T. S. Ramakrishnan, and David A. Weitz. "Mobilization of a trapped non-wetting fluid from a three-dimensional porous medium." Physics of Fluids 26, no. 2 (2014): 022002. http://dx.doi.org/10.1063/1.4866641.

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25

Borman, Vladimir, Anton Belogorlov, and Ivan Tronin. "Fast Spontaneous Transport of a Non-wetting Fluid in a Disordered Nanoporous Medium." Transport in Porous Media 139, no. 1 (2021): 21–44. http://dx.doi.org/10.1007/s11242-021-01638-7.

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26

SHIM, E., JUNG OK PARK, and MOHAN SRINIVASARAO. "FORCED COATING OF POLYPROPYLENE FIBERS WITH NON-WETTING FLUIDS: THE SCALING OF THE FILM THICKNESS." Modern Physics Letters B 22, no. 22 (2008): 2043–53. http://dx.doi.org/10.1142/s0217984908016649.

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The film thickness of free-meniscus coating of a polymeric fiber with a non-wetting fluid was investigated. A polypropylene monofilament fiber was coated with various glycerol/water mixtures. With a small capillary number (Ca), a detectable liquid film did not form on the fiber due to the non-wettability of the fiber-liquid system. Above a certain threshold velocity, liquid was forced to wet the fiber by hydrodynamic forces, thus forming a film. However, the film thickness in this region is lower than Landau–Levich–Derjaguin (LLD) theoretical value for the wetting system. At a moderate velocit

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WANG, XIAO-PING, TIEZHENG QIAN, and PING SHENG. "Moving contact line on chemically patterned surfaces." Journal of Fluid Mechanics 605 (May 23, 2008): 59–78. http://dx.doi.org/10.1017/s0022112008001456.

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We simulate the moving contact line in two-dimensional chemically patterned channels using a diffuse-interface model with the generalized Navier boundary condition. The motion of the fluid–fluid interface in confined immiscible two-phase flows is modulated by the chemical pattern on the top and bottom surfaces, leading to a stick–slip behaviour of the contact line. The extra dissipation induced by this oscillatory contact-line motion is significant and increases rapidly with the wettability contrast of the pattern. A critical value of the wettability contrast is identified above which the effe

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28

Park, Jung Ok, Alejandro D. Rey, and Mohan Srinivasarao. "Non-classical scaling for forced wetting of a nematic fluid on a polymeric fiber." Soft Matter 5, no. 11 (2009): 2277. http://dx.doi.org/10.1039/b808411d.

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29

Clément, E., C. Baudet, and J. P. Hulin. "Multiple scale structure of non wetting fluid invasion fronts in 3D model porous media." Journal de Physique Lettres 46, no. 24 (1985): 1163–71. http://dx.doi.org/10.1051/jphyslet:0198500460240116300.

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30

Galeano-Rios, Carlos A., Paul A. Milewski, and J. M. Vanden-Broeck. "Non-wetting impact of a sphere onto a bath and its application to bouncing droplets." Journal of Fluid Mechanics 826 (August 2, 2017): 97–127. http://dx.doi.org/10.1017/jfm.2017.424.

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We present a fully predictive model for the impact of a smooth, convex and perfectly hydrophobic solid onto the free surface of an incompressible fluid bath of infinite depth in a regime where surface tension is important. During impact, we impose natural kinematic constraints along the portion of the fluid interface that is pressed by the solid. This provides a mechanism for the generation of linear surface waves and simultaneously yields the pressure applied on the impacting masses. The model compares remarkably well with data of the impact of spheres and bouncing droplet experiments, and is

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MEAKIN, PAUL, GERI WAGNER, VIDAR FRETTE, JENS FEDER, and TORSTEIN JØSSANG. "FRACTALS AND SECONDARY MIGRATION." Fractals 03, no. 04 (1995): 799–806. http://dx.doi.org/10.1142/s0218348x95000709.

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The process of secondary migration, in which oil and gas are transported from the source rocks, through water saturated sedimentary carrier rocks, to a trap or reservoir can be described in terms of the gravity driven penetration of a low-density non-wetting fluid through a porous medium saturated with a wetting fluid. This process has been modeled in the laboratory and by computer simulations using homogeneous porous media. Under these conditions, the pattern formed by the migrating fluid can be described in terms of a string of fractal blobs. The low density internal structure of the fractal

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BASHTOVOI, V., P. KUZHIR, A. REKS, G. BOSSIS, and O. VOLKOVA. "THE UNIFORM MAGNETIC FIELD INFLUENCE ON THE MAGNETIC FLUID MENISCUS MOTION IN THE CYLINDRICAL CAPILLARY." International Journal of Modern Physics B 16, no. 17n18 (2002): 2590–96. http://dx.doi.org/10.1142/s0217979202012700.

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An improvement of liophobic capillary-porous systems using magnetic fluids is proposed. The cycle of non-wetting liquid penetration and displacement is realized experimentally in the presence of the uniform magnetic field. Experimental investigations of the effect of the external uniform magnetic field on dynamics of capillary penetration of the Newtonian magnetic fluid into cylindrical capillaries at zero gravity and under gravity are presented. It is found that the pressure difference in the magnetic fluid between a meniscus and a free surface in a vessel increases in the field longitudinal

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Shikhmurzaev, Yulii D., and James E. Sprittles. "Dynamic contact angle of a liquid spreading on an unsaturated wettable porous substrate." Journal of Fluid Mechanics 715 (January 9, 2013): 273–82. http://dx.doi.org/10.1017/jfm.2012.517.

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AbstractThe spreading of an incompressible viscous liquid over an isotropic homogeneous unsaturated porous substrate is considered. It is shown that, unlike the dynamic wetting of an impermeable solid substrate, where the dynamic contact angle has to be specified as a boundary condition in terms of the wetting velocity and other flow characteristics, the ‘effective’ dynamic contact angle on an unsaturated porous substrate is completely determined by the requirement of existence of a solution, i.e. the absence of a non-integrable singularity in the spreading fluid’s pressure at the ‘effective’

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34

Hatte, S., and R. Pitchumani. "Analysis of Laminar Convective Heat Transfer Over Structured Non-Wetting Surfaces." International Journal of Heat and Mass Transfer 167 (March 2021): 120810. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2020.120810.

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Lee, Hang-Bok, In Wook Yeo, and Kang-Kun Lee. "The modified Reynolds equation for non-wetting fluid flow through a rough-walled rock fracture." Advances in Water Resources 53 (March 2013): 242–49. http://dx.doi.org/10.1016/j.advwatres.2012.12.005.

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Lehnert, Matthew S., Daria Monaenkova, Taras Andrukh, Charles E. Beard, Peter H. Adler, and Konstantin G. Kornev. "Hydrophobic–hydrophilic dichotomy of the butterfly proboscis." Journal of The Royal Society Interface 10, no. 85 (2013): 20130336. http://dx.doi.org/10.1098/rsif.2013.0336.

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Mouthparts of fluid-feeding insects have unique material properties with no human-engineered analogue: the feeding devices acquire sticky and viscous liquids while remaining clean. We discovered that the external surface of the butterfly proboscis has a sharp boundary separating a hydrophilic drinking region and a hydrophobic non-drinking region. The structural arrangement of the proboscis provides the basis for the wetting dichotomy. Theoretical and experimental analyses show that fluid uptake is associated with enlargement of hydrophilic cuticular structures, the legulae, which link the two

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Chen, Xue-Qing, and Lei Tong. "Multiscale flow characteristics of droplet spreading with microgravity conditions." Canadian Journal of Physics 97, no. 8 (2019): 869–74. http://dx.doi.org/10.1139/cjp-2018-0474.

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In this paper, mesoscopic lattice–Boltzmann method (LBM) and microscopic molecular dynamics simulation method were used to simulate droplet dynamic wetting under microgravity. In terms of LBM, the wetting process of a droplet on a solid wall surface was simulated by introducing the fluid–fluid and solid–fluid interactions. In terms of molecular dynamics simulation, the spreading process of water on gold surface was simulated. Calculation results showed that two kinds of calculation methods were based on the microscopic molecular theory or mesoscopic kinetics theory, and such models could effec

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Kamari, Ehsan, Davood Rashtchian, and Seyed Reza Shadizadeh. "Immiscible Displacement of a Wetting Fluid by a Non-wetting One at High Capillary Number in a Micro-model Containing a Single Fracture." Transport in Porous Media 94, no. 1 (2012): 289–301. http://dx.doi.org/10.1007/s11242-012-0005-1.

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39

Spikes, H. A. "The half-wetted bearing. Part 1: Extended Reynolds equation." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 217, no. 1 (2003): 1–14. http://dx.doi.org/10.1243/135065003321164758.

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Recent research has shown that, when a liquid is partially wetting or non-wetting against a very smooth solid surface, the conventional no-slip boundary condition can break down. Under such circumstances, the Reynolds equation is no longer applicable. In the current paper, the Reynolds equation is extended to consider the sliding, hydrodynamic lubrication condition where the lubricant has a no-slip boundary condition against the moving solid surface but can slip at a critical shear stress against the stationary surface. It is shown that such a ‘half-wetted’ bearing is able to combine good load

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40

Hocking, L. M. "Waves produced by a vertically oscillating plate." Journal of Fluid Mechanics 179 (June 1987): 267–81. http://dx.doi.org/10.1017/s0022112087001526.

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The vertical oscillation of a plate partially immersed in a non-wetting fluid produces a radiated wavetrain when the contact line between the plate and the free surface of the fluid cannot move freely along the plate. Realistic conditions to apply at the contact line when capillarity is not negligible include the dynamic variation of the contact angle and contact-angle hysteresis. Both of these effects are included in this paper and the amplitude of the radiated waves and the energy dissipation at the contact line are calculated.

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41

Solazzi, Santiago G., J. Germán Rubino, Damien Jougnot, and Klaus Holliger. "Dynamic permeability functions for partially saturated porous media." Geophysical Journal International 221, no. 2 (2020): 1182–89. http://dx.doi.org/10.1093/gji/ggaa068.

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SUMMARY While the frequency-dependence of permeability under fully saturated conditions has been studied for decades, the corresponding characteristics of partially saturated porous media remain unexplored. Notably, it is not clear whether the use of effective pore fluid approaches under such conditions is valid. To address this issue, we propose a method that allows us to obtain dynamic permeability functions for partially saturated porous media. To this end, we conceptualize the considered pore space as a bundle of capillary tubes of different radii saturated by two immiscible fluid phases.

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Liu, Yang, Jiawei Fan, Lili Liu, and Shuren Yang. "Numerical Simulation of Residual Oil Flooded by Polymer Solution in Microchannels." Geofluids 2018 (July 8, 2018): 1–10. http://dx.doi.org/10.1155/2018/8947839.

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This paper establishes a flow equation using non-Newtonian fluid mechanics and defines the deformation of residual oil using numerical computation in order to conduct a study on the flow law of residual oil in microchannels of rock during polymer flooding, the influence of flooding fluid elasticity on the deformation of residual oil, and flooding mechanism of viscoelastic displacing fluid. Computation shows that advancing contact angle increases and receding contact angle decreases as the viscosity ratio decreases. The higher elasticity of polymer solution with higher concentration or molecula

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Dias, Madalena M., and Alkiviades C. Payatakes. "Network models for two-phase flow in porous media Part 1. Immiscible microdisplacement of non-wetting fluids." Journal of Fluid Mechanics 164 (March 1986): 305–36. http://dx.doi.org/10.1017/s0022112086002574.

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A theoretical simulator of immiscible displacement of a non-wetting fluid by a wetting one in a random porous medium is developed. The porous medium is modelled as a network of randomly sized unit cells of the constricted-tube type. Under creeping-flow conditions the problem is reduced to a system of linear equations, the solution of which gives the instantaneous pressures at the nodes and the corresponding flowrates through the unit cells. The pattern and rate of the displacement are obtained by assuming quasi-static flow and taking small time increments. The porous medium adopted for the sim

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Minár, Jozef. "Numerical Schemes for Modelling Two Phase Flow with Interfaces." Defect and Diffusion Forum 365 (July 2015): 1–4. http://dx.doi.org/10.4028/www.scientific.net/ddf.365.1.

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We discuss the numerical modelling of two phase flow in porous media (see [1]). We consider a one-dimensional problem describing flow of two incompressible and immiscible fluids through a porous medium where the non-wetting phase (oil) is displaced by the wetting fluid (water). The used model is based on Darcy’s law and we consider either horizontal (neglecting the influence of gravity) or vertical flow. In case of horizontal flow, we compare our solution with analytical solution published in [2]. In case of gravity driven vertical flow, there is no known analytical solution and we propose our

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Shams, Mosayeb, Kamaljit Singh, Branko Bijeljic, and Martin J. Blunt. "Direct Numerical Simulation of Pore-Scale Trapping Events During Capillary-Dominated Two-Phase Flow in Porous Media." Transport in Porous Media 138, no. 2 (2021): 443–58. http://dx.doi.org/10.1007/s11242-021-01619-w.

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AbstractThis study focuses on direct numerical simulation of imbibition, displacement of the non-wetting phase by the wetting phase, through water-wet carbonate rocks. We simulate multiphase flow in a limestone and compare our results with high-resolution synchrotron X-ray images of displacement previously published in the literature by Singh et al. (Sci Rep 7:5192, 2017). We use the results to interpret the observed displacement events that cannot be described using conventional metrics such as pore-to-throat aspect ratio. We show that the complex geometry of porous media can dictate a curvat

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Chan, T. P., and Rao S. Govindaraju. "Pore-morphology-based simulations of drainage and wetting processes in porous media." Hydrology Research 42, no. 2-3 (2011): 128–49. http://dx.doi.org/10.2166/nh.2011.058.

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Soil hydraulic properties relating saturation, water pressure, and hydraulic conductivity are known to exhibit hysteresis. In this paper, we focus on the determination of the water retention curve for a porous medium through a novel pore-scale simulation technique that is based on mathematical morphology. We develop an algorithm that allows for the representation of three-dimensional randomly packed porous media of any geometry (i.e. not restricted to idealized geometries such as spherical or ellipsoidal particles/pore space) so that the connectivity-, tortuosity-, and hysteresis-causing mecha

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Schmidt, G. R., T. J. Chung, and A. Nadarajah. "Thermocapillary flow with evaporation and condensation at low gravity. Part 2. Deformable surface." Journal of Fluid Mechanics 294 (July 10, 1995): 349–66. http://dx.doi.org/10.1017/s0022112095002928.

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The free surface behaviour of a volatile wetting liquid at low gravity is studied using scaling and numerical techniques. An open cavity model, which was applied in part 1 to investigate fluid flow and heat transfer in non-deforming pores, is used to evaluate the influence of convection on surface morphology with length scales and subcooling/superheating limits of 1 ≤ D ≤ 102 μm and ∼ 1 K, respectively. Results show that the menisci shapes of highly wetting fluids are sensitive to thermocapillary flow and to a lesser extent the recoil force associated with evaporation and condensation. With su

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Pruno, Stefano, Hans Erik Rodvelt, and Ola Skjæveland. "Measurement of Spontaneous Imbibition Capillary Pressure, Saturation and Resistivity Index by Counter Current Technique at Net Reservoir Stress and Elevated Temperature." E3S Web of Conferences 89 (2019): 02002. http://dx.doi.org/10.1051/e3sconf/20198902002.

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Capillary pressure and resistivity index spontaneous imbibition experiments by the porous plate method, in a core holder at elevated temperature and net reservoir stress, are both difficult and time consuming special core analysis measurements to perform. In this type of experiment, low capillary forces act against a low permeable porous plate and only one face of the cylindrical core sample is in capillary contact with the fluid saturated porous plate. In this paper, core samples having different lithology, petrophysical properties and wettability are analysed by counter current spontaneous i

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Zhao, Jin, Guice Yao, and Dongsheng Wen. "Pore-scale simulation of water/oil displacement in a water-wet channel." Frontiers of Chemical Science and Engineering 13, no. 4 (2019): 803–14. http://dx.doi.org/10.1007/s11705-019-1835-y.

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Abstract Water/oil flow characteristics in a water-wet capillary were simulated at the pore scale to increase our understanding on immiscible flow and enhanced oil recovery. Volume of fluid method was used to capture the interface between oil and water and a pore-throat connecting structure was established to investigate the effects of viscosity, interfacial tension (IFT) and capillary number (Ca). The results show that during a water displacement process, an initial continuous oil phase can be snapped off in the water-wet pore due to the capillary effect. By altering the viscosity of the disp

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Vinogradova, A. S., V. A. Turkov, and V. A. Naletova. "Magnetic fluid axisymmetric volume on a horizontal plane near a vertical line conductor in case of non-wetting." Journal of Magnetism and Magnetic Materials 431 (June 2017): 169–71. http://dx.doi.org/10.1016/j.jmmm.2016.10.010.

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