Terraced spreading of simple liquids on solid surfaces

Yang, Jielong; Koplik, Joel; Banavar, Jayanth R.

doi:10.1103/physreva.46.7738

Cited by 75 publications

(65 citation statements)

References 18 publications

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“…Among the more recent entries there are simulations of droplets that form during a rapid expansion of a liquid [34] and the analysis of the terraced spreading of a 2000-molecule droplet that lands on an atomic surface [35]. A comprehensive study of liquid droplets in equilibrium with their own vapor has been done by Thompson et.…”

Section: Static Droplets and Bubblesmentioning

confidence: 99%

Motion of grains, droplets, and bubbles in fluid-filled nanopores

Sushko

Cieplak

2001

Phys. Rev. E

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Molecular dynamics studies of nono-sized rigid grains, droplets and bubbles in nano-sized pores indicate that the drag force may have a hydrodynamic form if the moving object is dense and small compared to the pore diameter. Otherwise, the behavior is non-hydrodynamic. The terminal speed is insensitive to whether the falling droplet is made of liquid or a solid. The velocity profiles within droplets and bubbles that move in the pore are usually non-parabolic and distinct from those corresponding to individual fluids. The density profiles indicate motional shape distortion of the moving objects.

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Section: Static Droplets and Bubblesmentioning

confidence: 99%

Motion of grains, droplets, and bubbles in fluid-filled nanopores

Sushko

Cieplak

2001

Phys. Rev. E

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“…Molecular calculations of fluid flow have become common [7], and the details of the present simulation are quite similar to that used previously in molecular studies of wetting processes [6,8,9]. In an MD calculation, one computes the (classical) motion of the individual atoms comprising the fluid by giving initial positions and velocities, and integrating…”

Section: Simulation Methodsmentioning

confidence: 68%

“…The interface may be sharpened up while retaining a monatomic fluid by considering the relative displacement of two immiscible viscous fluids, as in [6,8], although chain molecules in contact with near-vacuum [9] would have the same effect.…”

Section: Simulation Methodsmentioning

confidence: 99%

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Wetting Hysteresis at the Molecular Scale

1997

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The motion of a fluid-fluid-solid contact line on a rough sin-face is well known to display hysteresis in the contact angle vs. velocity relationship.In order to understand the phenomenon at a fundamental microscopic level, we have conducted molecular dynamics computer simulations of a Wilhelmy plate experiment in which a solid surface is dipped into a liquid bath, and the force-velocity characteristics are measured. We directly observe a systematic variation of force and contact angle with velocity, which is single-valued for the case of an atomically smooth solid surface.In the microscopically rough case, however, we find (as intuitively expected) an open hysteresis loop. Further characterization of the interface dynamics is in progress.

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“…In addition, the velocity and temperature of the small droplet were very difficult to measure, and this prevented further progress. Recently, molecular dynamics simulations have been performed for the static contact angle [3][4][5][6], wettability [7], and the dynamic contact angle [8,9]. In these simulations, however, there has been difficulty in defining the contact angle on the microscopic scale; even if it were defined, the relation between the microscopic and macroscopic near-contact-line behaviors would not be clear.…”

Section: Introductionmentioning

confidence: 99%

Motion of droplets induced by the Marangoni force on a wall with a temperature gradient

Murata¹,

Mochizuki²

2004

Heat Trans. Asian Res.

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Motion of silicone oil and water droplets induced by the Marangoni force was numerically simulated by using two-and three-dimensional second-order finite difference methods with the CIP and the level set methods. The surface tension was introduced by the continuum surface force (CSF) method. The results clearly showed the flow induced by the Marangoni force and the dependence of droplet velocity on droplet size, contact angle, temperature gradient, and fluid properties. The Marangoni force balanced with the viscous force in the small contact angle case; on the other hand, in the large contact angle case, it balanced with the normal component of surface tension. As for the effect of fluid properties on droplet motion, the temperature coefficient of surface tension had a much larger effect than did viscosity, thermal diffusivity, or surface tension.

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Terraced spreading of simple liquids on solid surfaces

Cited by 75 publications

References 18 publications

Motion of grains, droplets, and bubbles in fluid-filled nanopores

Motion of grains, droplets, and bubbles in fluid-filled nanopores

Wetting Hysteresis at the Molecular Scale

Motion of droplets induced by the Marangoni force on a wall with a temperature gradient

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