Effect of nanostructure on explosive boiling of thin liquid water film on a hot copper surface: a molecular dynamics study

ABSTRACT

The explosive boiling characteristics of water on the copper surface are studied based on molecular dynamics simulation. The effects of the size, number and shape of nanostructures on the heat transfer performance of water explosive boiling are analysed. The results show that the heat transfer performance and boiling rate of liquid film increase with the increase of nanostructure size. At the same volume concentration of nanostructures, the boiling rate of the liquid film increases with the increase of the number of nanostructures. Compared with the spherical nanostructure, the water heating rate is higher and the heat flux of water is larger after the cylindrical nanostructure is adopted. Therefore, using cylindrical nanostructures and increasing, the uniformity of nanostructures on the surface can effectively improve the boiling heat transfer performance of water on the copper surface.

KEYWORDS:

• Nanostructure
• explosive boiling
• molecular dynamics
• nanostructure shape

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by National Natural Science Foundation of China [grant number 52006199].