Evaporation of water droplets on Pt-surface in presence of external electric field--A molecular dynamics study

The Journal of Chemical Physics
Abhiram HensSudipta De

Abstract

Evaporation of a sessile droplet on a hot solid substrate is an important problem in fluid mechanics. It is relevant to theoretical issues in heat transfer as well as several practical applications. This study investigates the spreading and evaporation of a nanoscale water droplet on a solid platinum surface. The major objective was to analyze the effect of an external electric field on these phenomena. Varying the intensity and direction of the external electric field, a series of molecular dynamics simulations were carried out to understand these phenomena at a molecular level. The results reveal that a horizontal electric field assists in droplet spreading, whereas a vertical electric field enhances the rate of evaporation for a certain range of field intensities. It also shows that the substrate temperature plays an important role in such processes. It is seen that the effect of an external electric field on droplet evaporation becomes significant at an intermediate range of surface temperatures and this effect is not clearly visible for either very high or very low range of surface temperatures.

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Citations

Aug 21, 2018·Physical Chemistry Chemical Physics : PCCP·Hamzeh Yaghoubi, Masumeh Foroutan
Feb 3, 2019·The Journal of Chemical Physics·Parul Katiyar, Jayant K Singh
Aug 12, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Darshan M BasavarajaArup K Das
Jan 18, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Jia-Jia YuChun-Mei Wu
Dec 20, 2017·The Journal of Physical Chemistry. a·Tao LiangSusan B Sinnott
Sep 1, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Andrew C AntonySusan B Sinnott

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