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Effect of the Hybrid Hydrophobic-Hydrophilic Nanostructured Surface on Explosive Boiling by Liao, Ming-Jun (author);Duan, Li-Qiang (author) is a Engineering article available to read on EtoBox.

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The influence of different wettability on explosive boiling exhibits a significant distinction, where the hydrophobic surface is beneficial for bubble nucleation and the hydrophilic surface enhances the critical heat flux. Therefore, to receive a more suitable surface for the explosive boiling, in this paper a hybrid hydrophobic–hydrophilic nanostructured surface was built by the method of molecular dynamics simulation. The onset temperatures of explosive boiling with various coating thickness, pillar width, and film thicknesses were investigated. The simulation results show that the hybrid nanostructure can decrease the onset temperature compared to the pure hydrophilic surface. It is attributed to the effect of hydrophobic coating, which promotes the formation of bubbles and causes a quicker liquid film break. Furthermore, with the increase of the hydrophobic coating thickness, the onset temperature of explosive boiling decreases. This is because the process of heat transfer between the liquid film and the hybrid nanostructured surface is inevitably enhanced. In addition, the onset temperature of explosive boiling on the hybrid wetting surface decreases with the increase of pilla

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Author

Liao, Ming-Jun (author);Duan, Li-Qiang (author)

Publisher

MDPI AG

Published

2021

Language

EN

Field

Engineering (Physical Sciences)