scholarly journals Histogram analysis as a method for determining the line tension of a three-phase contact region by Monte Carlo simulations

2005 ◽  
Vol 123 (18) ◽  
pp. 184704 ◽  
Author(s):  
Yuri Djikaev
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Contact Region ◽  
Line Tension ◽  
Histogram Analysis ◽  
Phase Contact ◽  
Three Phase

Test of the stability of a three-phase contact line with negative line tension

1999 ◽  
Vol 96 (9) ◽  
pp. 1335-1339 ◽  
Author(s):  
ALAN E. VAN GIESSEN, DIRK JAN BUKMAN, B.
Keyword(s):  
Contact Line ◽  
Line Tension ◽  
Phase Contact ◽  
Three Phase ◽  
The Stability

High-Resolution Measurements at Nucleate Boiling of Pure FC-84 and FC-3284 and Its Binary Mixtures

2009 ◽  
Vol 131 (12) ◽  
Author(s):  
Enno Wagner ◽  
Peter Stephan
Keyword(s):  
Binary Mixtures ◽  
High Speed ◽  
Contact Region ◽  
Infrared Camera ◽  
Nucleate Boiling ◽  
Heated Wall ◽  
Rear Side ◽  
Phase Contact ◽  
Pure Fluids ◽  
Three Phase

In a special boiling cell, vapor bubbles are generated at single nucleation sites on top of a 20μm thick stainless steel heating foil. An infrared camera captures the rear side of the heating foil for analyzing the temperature distribution. The bubble shape is recorded through side windows with a high-speed camera. Global measurements were conducted, with the pure fluids FC-84 and FC-3284 and with its binary mixtures of 0.25, 0.5, and 0.75mole fraction. The heat transfer coefficient (HTC) in a binary mixture is less than the HTC in either of the single component fluid alone. Applying the correlation of Schlünder showed good agreement with the measurements (1982, “Über den Wärmeübergang bei der Blasenverdampfung von Gemischen,” Verfahrenstechnik, 16(9), pp. 692–698). Furthermore, local measurements were arranged with high lateral and temporal resolution for single bubble events. The wall heat flux was computed and analyzed, especially at the three-phase-contact line between liquid, vapor, and heated wall. The bubble volume and the vapor production rate were also investigated. For pure fluids, up to 50–60% of the latent heat flows through the three-phase-contact region. For mixtures, this ratio is clearly reduced and is about 35%.

B141 Three-phase Contact Region of a Droplet on Nano/micro structured Surfaces

2012 ◽  
Vol 2012 (0) ◽  
pp. 59-60
Author(s):  
Ryo YUI ◽  
Gyoko NAGAYAMA ◽  
Takaharu TSURUTA
Keyword(s):  
Contact Region ◽  
Phase Contact ◽  
Structured Surfaces ◽  
Three Phase

Emulsions stabilized by solid particles

Surfactants ◽  
2019 ◽  
pp. 501-522
Author(s):  
Bob Aveyard
Keyword(s):  
Line Tension ◽  
Solid Particles ◽  
The Other ◽  
Liquid Volume ◽  
Pickering Emulsions ◽  
Phase Contact ◽  
Three Phase ◽  
Hydrophobic Particles ◽  
The Mean ◽  
Hydrophilic Particles

Adsorbed solid particles can stabilize (Pickering) emulsions and multiple emulsions very effectively. For roughly equal volumes of oil and water, together with solid particles, the ‘preferred’ emulsion type depends on the relative wettability of the particles by oil and water. Hydrophobic particles tend to stabilize W/O emulsions whereas hydrophilic particles favour O/W emulsions. Emulsions can be inverted from one type to the other either by changing the liquid volume fractions or the (mean) wettability of the particles. The latter method is analogous to changing the HLB in surfactant-stabilized emulsions. The possibility of forming thermodynamically (rather than kinetically) stable emulsions if (i) the line tension in the three-phase contact line around adsorbed particles is negative, and (ii) when Janus particles are used, is explored. Finally some other structures that can be stabilized by solid particles are mentioned.

Monte Carlo Simulations on Heterogeneous Nucleation II: Line Tension

2007 ◽  
pp. 302-305
Author(s):  
Markku Kulmala ◽  
Hanna Vehkamäki ◽  
Antti Lauri ◽  
Evgeni Zapadinsky ◽  
Anca I. Hienola
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Heterogeneous Nucleation ◽  
Line Tension
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