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Showing 1 to 6 of 6 for “"contact line pinning"”.
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Droplet levitation and underwater plastron restoration using aerophilic surface textures
… When a superhydrophobic surface comes into contact with water, it traps a thin layer of air (plastron) within its surface texture. This entrapped air is advantageous for reducing the contact line pinning of water droplets on the surface and lowering the skin friction drag experienced by the …
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INFLUENCE OF STRUCTURAL AND CHEMICAL ASYMMETRY OF NANOSTRUCTURES ON THE KINETICS OF WETTING
… of the two faces of a nanostructure, an uneven pinning strength on the triple phase contact line causes preferential wetting to occur on the more hydrophilic face. Depending on the shape of the nanostructure, which can be controlled by the fabrication process, wetting can be made uni-, bi- or …
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The numerical simulation of thin film flow over heterogeneous substrates
… flow of continuous thin liquid films down an inclined surface containing well defined topographic features. The method developed, employs a Full Approximation Storage (FAS) multigrid algorithm, is fully implicit and has embedded within it an adaptive time-stepping scheme that enables the same to …
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Influence of Surface Wettability on Drop Dynamics and Condensation
… specify the surface wettability: rest or static contact angle (_) and contact angle hysteresis (__). Partially non-wettable surfaces are characterized by static contact angles _ > 90° while partially wettable surfaces _ < 90°. Contact angle hysteresis, defined as the difference in dynamic …
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Effects of air-side surface wettability on the performance of dehumidifying heat exchangers
… surface features serve to increase the apparent contact angle of water droplets placed onto the surface. A consistent reduction of critical sliding angle is observed on these embossed surfaces (grooves were aligned to the direction of gravity), which is due to the contact line discontinuities and …
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Finite-element simulations of interfacial flows with moving contact lines
… framework for interfacial flows with moving contact lines. In our method, the contact line is advected naturally by the flow field. Contact angle hysteresis can be easily implemented without explicit calculation of the contact angle or the contact line velocity, and meshindependent results …