scholarly journals On the equilibrium conditions for a spherical-cap liquid drop on a solid surface——Also comments on “Thermodynamic mechanism for the condensation of liquid drops on the condense surface” etc.

2010 ◽  
Vol 59 (10) ◽  
pp. 7271
Author(s):  
Zhu Ru-Zeng ◽  
Yan Hong ◽  
Wang Xiao-Song
Keyword(s):  
Solid Surface ◽  
Liquid Drop ◽  
Equilibrium Conditions ◽  
Spherical Cap ◽  
Liquid Drops ◽  
Thermodynamic Mechanism

Numerical Modeling of Liquid Drop Spreading Behavior on Inclined Surfaces

2009 ◽  
Author(s):  
Young-Gil Park ◽  
Anthony M. Jacobi
Keyword(s):  
Solid Surface ◽  
Liquid Drop ◽  
Numerical Study ◽  
Contact Angle Hysteresis ◽  
Contact Angles ◽  
Quasi Equilibrium ◽  
Liquid Drops ◽  
Spreading Behavior ◽  
Inclined Surfaces ◽  
Liquid Vapor

A numerical study was conducted on the spreading behavior of liquid drops on flat solid surfaces. The model predicts the shape of liquid-vapor interface under static equilibrium using an unstructured surface grid composed of triangular elements. Incremental movement of base contour, i.e. solid-liquid-vapor contact line, is also captured such that the constrained boundary conditions, i.e. advancing and receding contact angles, can be satisfied. The numerical model is applied to a common experiment that studies the behavior of liquid drops on inclined surfaces, where the shape of the drops change in response to an alteration of total volume or gravitational direction. On a heterogeneous surface that has contact angle hysteresis, the shape of the base contour on the solid surface is not determined uniquely but rather dependent upon history. This study demonstrates such dependence by comparing the spreading of a liquid drop on a solid surface with different quasi-equilibrium paths.

scholarly journals Nanoscopic interactions of colloidal particles can suppress millimetre drop splashing

Soft Matter ◽  
2021 ◽  
Author(s):  
Marie-Jean Thoraval ◽  
Jonas Schubert ◽  
Stefan Karpitschka ◽  
Munish Chanana ◽  
François Boyer ◽  
...  
Keyword(s):  
Solid Surface ◽  
Colloidal Particles ◽  
Liquid Drop ◽  
Nanoparticles Concentration

The presence of nanoparticles in a millimetric liquid drop impacting on a solid surface can suppress splashing at higher impact velocities. This mechanism is affected by the nanoparticles concentration and the coating molecules at their surface.

Dynamic Measurement of the Force Required to Move a Liquid Drop on a Solid Surface

Langmuir ◽  
2012 ◽  
Vol 28 (49) ◽  
pp. 16812-16820 ◽  
Author(s):  
D. W. Pilat ◽  
P. Papadopoulos ◽  
D. Schäffel ◽  
D. Vollmer ◽  
R. Berger ◽  
...  
Keyword(s):  
Solid Surface ◽  
Liquid Drop ◽  
Dynamic Measurement

scholarly journals The Effects of Surfactant on the Evolution of a Thin Film under a Moving Liquid Drop

2020 ◽  
Vol 5 (1) ◽  
pp. 75-85
Author(s):  
Kartika Yulianti ◽  
Agus Yodi Gunawan ◽  
Edy Soewono
Keyword(s):  
Thin Film ◽  
Film Thickness ◽  
Solid Surface ◽  
Surfactant Concentration ◽  
Liquid Drop ◽  
Nonlinear Partial Differential Equations ◽  
Normal Pressure ◽  
Lubrication Approximation ◽  
Moving Liquid

The effect of surfactant on the thickness of a thin film bounded by a solid surface and a moving liquid drop was investigated. We proposed a model so that parameters from the liquid drop can be stated in a parameter that acts as normal pressure to the thin film. Using the lubrication approximation, the model was reduced to a set of nonlinear partial differential equations in terms of the film thickness and surfactant concentration. Since we were interested in the role of the surfactant in lifting up the drop, we assumed that the density of the drop is higher than the density of the thin film. Numerically, the results show that the presence of the surfactant tends to delay the decrease of the film thickness insignificantly. However, when the surfactant was added into the system, it tends to significantly increase the film thickness for a certain range value of the normal pressure.

scholarly journals Granular impact cratering by liquid drops: Understanding raindrop imprints through an analogy to asteroid strikes

2014 ◽  
Vol 112 (2) ◽  
pp. 342-347 ◽  
Author(s):  
Runchen Zhao ◽  
Qianyun Zhang ◽  
Hendro Tjugito ◽  
Xiang Cheng
Keyword(s):  
High Speed ◽  
Granular Media ◽  
Liquid Drop ◽  
Impact Craters ◽  
High Speed Photography ◽  
Impact Cratering ◽  
Liquid Drops ◽  
Asteroid Impact ◽  
Liquid Marble ◽  
Crater Morphology

When a granular material is impacted by a sphere, its surface deforms like a liquid yet it preserves a circular crater like a solid. Although the mechanism of granular impact cratering by solid spheres is well explored, our knowledge on granular impact cratering by liquid drops is still very limited. Here, by combining high-speed photography with high-precision laser profilometry, we investigate liquid-drop impact dynamics on granular surface and monitor the morphology of resulting impact craters. Surprisingly, we find that despite the enormous energy and length difference, granular impact cratering by liquid drops follows the same energy scaling and reproduces the same crater morphology as that of asteroid impact craters. Inspired by this similarity, we integrate the physical insight from planetary sciences, the liquid marble model from fluid mechanics, and the concept of jamming transition from granular physics into a simple theoretical framework that quantitatively describes all of the main features of liquid-drop imprints in granular media. Our study sheds light on the mechanisms governing raindrop impacts on granular surfaces and reveals a remarkable analogy between familiar phenomena of raining and catastrophic asteroid strikes.

3D Observations of Liquid Drop Motions at the Edge of a Solid Surface

2018 ◽  
Vol 2018.23 (0) ◽  
pp. B211
Author(s):  
Hiroki TANUMA ◽  
Junya ONISHI ◽  
Naoki SHIKAZONO
Keyword(s):  
Solid Surface ◽  
Liquid Drop

Experimental investigation of liquid drop evaporation on a heated solid surface

2015 ◽  
Vol 22 (6) ◽  
pp. 771-774 ◽  
Author(s):  
A. A. Semenov ◽  
D. V. Feoktistov ◽  
D. V. Zaitsev ◽  
G. V. Kuznetsov ◽  
O. A. Kabov
Keyword(s):  
Experimental Investigation ◽  
Solid Surface ◽  
Liquid Drop ◽  
Drop Evaporation
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