scholarly journals Droplet impacts onto soft solids entrap more air

Soft Matter ◽  
2020 ◽  
Vol 16 (24) ◽  
pp. 5702-5710
Author(s):  
Kenneth R. Langley ◽  
Alfonso A. Castrejón-Pita ◽  
Sigurdur T. Thoroddsen
Keyword(s):  
Liquid Drop ◽  
Rigid Surface ◽  
Soft Solids ◽  
Droplet Impacts

A liquid drop impacting onto a soft solid will entrap more air in the central air disc than an equivalent drop impacting onto a rigid surface.

Planar equilibrium shapes of a liquid drop on a membrane

Soft Matter ◽  
2015 ◽  
Vol 11 (46) ◽  
pp. 8960-8967 ◽  
Author(s):  
Chung-Yuen Hui ◽  
Anand Jagota
Keyword(s):  
Liquid Drop ◽  
Equilibrium Shape ◽  
Rigid Surface ◽  
Equilibrium Shapes ◽  
Young's Equation ◽  
Planar Equilibrium

The equilibrium shape of a small liquid drop on a smooth rigid surface is governed by the minimization of energy with respect to the change in configuration, represented by the well-known Young's equation.

scholarly journals Enhancing efficiency of using water due to explosive breakup of liquid drop

2016 ◽  
Vol 92 ◽  
pp. 01065
Author(s):  
Anastasia G. Borisova ◽  
Vladislav M. Gumerov ◽  
Maxim V. Piskunov ◽  
Denis V. Ushmaev
Keyword(s):  
Liquid Drop

scholarly journals An inversion of contact angle hysteresis when a liquid drop slides up on an inclined plane under the spark discharge action

2021 ◽  
Vol 33 (6) ◽  
pp. 061707
Author(s):  
Alexander E. Dubinov ◽  
Djamilya N. Iskhakova ◽  
Valeria A. Lyubimtseva
Keyword(s):  
Contact Angle ◽  
Liquid Drop ◽  
Contact Angle Hysteresis ◽  
Spark Discharge ◽  
Inclined Plane

scholarly journals A Staged Approach to Erosion Analysis of Wind Turbine Blade Coatings

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 681
Author(s):  
David Nash ◽  
Grant Leishman ◽  
Cameron Mackie ◽  
Kirsten Dyer ◽  
Liu Yang
Keyword(s):  
Computed Tomography ◽  
Wind Turbine ◽  
Incubation Period ◽  
Leading Edge ◽  
X Ray ◽  
Erosion Testing ◽  
Staged Approach ◽  
X Ray Computed ◽  
Droplet Impacts ◽  
Rain Erosion

The current wind turbine leading-edge erosion research focuses on the end of the incubation period and breakthrough when analysing the erosion mechanism. This work presented here shows the benefits of splitting and describing leading-edge erosion progression into discrete stages. The five identified stages are: (1) an undamaged, as-new, sample; (2) between the undamaged sample and end of incubation; (3) the end of incubation period; (4) between the end of incubation and breakthrough, and (5) breakthrough. Mass loss, microscopy and X-ray computed tomography were investigated at each of the five stages. From this analysis, it was observed that notable changes were detected at Stages 2 and 4, which are not usually considered separately. The staged approach to rain erosion testing offers a more thorough understanding of how the coating system changes and ultimately fails due to rain droplet impacts. It is observed that during microscopy and X-ray computed tomography, changes unobservable to the naked eye can be tracked using the staged approach.

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