Capillary bridges between parallel and non-parallel surfaces and their stability

Chen, Tay-Yuan; Tsamopoulos, John; Good, Robert J.

doi:10.1016/0021-9797(92)90237-g

Cited by 45 publications

(30 citation statements)

References 21 publications

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“…39,40 This contiguous water-film is found to be one of the most important factors that govern the oil-water separation. In view of this fact, we develop a simple model for the contact line of oil, water and solid interfaces in the TiO 2 coated mesh.…”

Section: Discussionmentioning

confidence: 99%

Study of Factors Governing Oil–Water Separation Process Using TiO₂ Films Prepared by Spray Deposition of Nanoparticle Dispersions

Gondal

Sadullah

Dastageer

et al. 2014

ACS Appl. Mater. Interfaces

227

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Surfaces which possess extraordinary water attraction or repellency depend on surface energy, surface chemistry and nano-and microscale surface roughness. Synergistic superhydrophilic-underwater superoleophobic surfaces were fabricated by a spray deposition of nanostructured TiO 2 on stainless steel mesh substrates. The coated meshes were then used to study gravity driven oil-water separation, where only the water from the oil-water mixture is allowed to permeate through the mesh. Oil-water separation efficiencies of up to 99 % could be achieved through the coated mesh of pore sizes 50 and 100 micron, compared to no separation at all, that was observed in the case of uncoated meshes of the same material and pore sizes. An adsorbed water on the TiO 2 coated surface, formation of a water-film between 2 the wires that form the mesh and the underwater superoleophobicity of the structured surface are the key factors that contribute to the enhanced efficiency observed in oil-water separation.The nature of the oil-water separation process using this coated mesh (in which the mesh allows water to pass through the porous structure but resists wetting by the oil phase) minimizes the fouling of mesh so that the need for frequent replacement of the separating medium is reduced. This fabrication approach presented here can be applied for coating large surface areas and to develop a large-scale oil water separation facility for oil-field applications and petroleum industries.

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Section: Discussionmentioning

confidence: 99%

Study of Factors Governing Oil–Water Separation Process Using TiO₂ Films Prepared by Spray Deposition of Nanoparticle Dispersions

Gondal

Sadullah

Dastageer

et al. 2014

ACS Appl. Mater. Interfaces

227

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“…These latter approaches usually require that the liquid-to-solid contact angle remains constant and zero throughout the separation. To our knowledge, only a few models in the literature take into account the wetting hysteresis of the liquid on the solid surfaces (7,30). In this latter work the evolution and postrupture liquid distribution is investigated for "large" volume liquid bridges (∼10 2 mm 3 ) formed in an insoluble liquid media between surfaces of dissimilar energy.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Evolution and Rupture of Pendular Liquid Bridges in the Presence of Large Wetting Hysteresis

Pépin

Rossetti

Iveson

et al. 2000

Journal of Colloid and Interface Science

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“…The statics and dynamics of liquid bridges have been extensively studied for their importance in such diverse areas as crystal growth 1 , spraying and atomization of liquids 2 , fiber spinning 3 , measurements of surface tension and viscosity 4 , agglomeration of particles 5 , and drop formation through capillary breakup 6 . Recent studies also investigated capillary forces mediated by liquid bridges for enhanced wet adhesion [7][8][9][10][11][12] and for selfalignment and self-assembly of milli-and sub-milliscale objects 13 .…”

Section: Introductionmentioning

confidence: 99%

A Combined Experimental and Numerical Modeling Study of the Deformation and Rupture of Axisymmetric Liquid Bridges under Coaxial Stretching

Zhuang

2015

Langmuir

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Abstract:The deformation and rupture of axisymmetric liquid bridges being stretched between two fully wetted coaxial disks are studied experimentally and theoretically. We numerically solve the time-dependent Navier-Stokes equations while tracking the deformation of the liquid-air interface using the Arbitrary Lagrangian-Eulerian (ALE) moving mesh method to fully account for the effects of inertia and viscous forces on bridge dynamics. The effects of the stretching velocity, liquid properties, and liquid volume on the dynamics of liquid bridges are systematically investigated to provide direct experimental validation of our numerical model for stretching velocities as high as 3 m/s. The Ohnesorge number (Oh) of liquid bridges is a primary factor governing the dynamics of liquid bridge rupture, especially the dependence of the rupture distance on the stretching velocity. The rupture distance generally increases with the stretching velocity, far in excess of the static stability limit. For bridges with low Ohnesorge numbers, however, the rupture distance stay nearly constant or decreases with the stretching velocity within certain velocity windows due to the relative rupture position switching and the thread shape change. Our work provides an experimentally validated modeling approach and experimental data to help establish foundation for systematic further studies and applications of liquid bridges.

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Capillary bridges between parallel and non-parallel surfaces and their stability

Cited by 45 publications

References 21 publications

Study of Factors Governing Oil–Water Separation Process Using TiO₂ Films Prepared by Spray Deposition of Nanoparticle Dispersions

Study of Factors Governing Oil–Water Separation Process Using TiO₂ Films Prepared by Spray Deposition of Nanoparticle Dispersions

Modeling the Evolution and Rupture of Pendular Liquid Bridges in the Presence of Large Wetting Hysteresis

A Combined Experimental and Numerical Modeling Study of the Deformation and Rupture of Axisymmetric Liquid Bridges under Coaxial Stretching

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Capillary bridges between parallel and non-parallel surfaces and their stability

Cited by 45 publications

References 21 publications

Study of Factors Governing Oil–Water Separation Process Using TiO2 Films Prepared by Spray Deposition of Nanoparticle Dispersions

Study of Factors Governing Oil–Water Separation Process Using TiO2 Films Prepared by Spray Deposition of Nanoparticle Dispersions

Modeling the Evolution and Rupture of Pendular Liquid Bridges in the Presence of Large Wetting Hysteresis

A Combined Experimental and Numerical Modeling Study of the Deformation and Rupture of Axisymmetric Liquid Bridges under Coaxial Stretching

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Study of Factors Governing Oil–Water Separation Process Using TiO₂ Films Prepared by Spray Deposition of Nanoparticle Dispersions

Study of Factors Governing Oil–Water Separation Process Using TiO₂ Films Prepared by Spray Deposition of Nanoparticle Dispersions