Electrically Manipulated Vapor Condensation on the Dimpled Surface: Insights from Molecular Dynamics Simulations

• DOI: 10.1021/acs.langmuir.2c02897
• Publication Date: 2023-01-03T12:56:50Z
• Authors: Shao-Yu Wang; Zi-Jie Wang; Dan-Qi Wang; Yan-Ru Yang; Xiao-Dong Wang; Duu-Jong Lee
• Keywords: Field strength

Random vapor nucleation leads to flooding condensation with degraded heat-transfer efficiency. Since an external electric field has a significant effect on manipulating droplets' motion, it is possible be one of the effective methods hinder phenomena and improve rate by applying during condensation. However, motion nanodroplets more sensitive owing scale nanoscale. The growth not explicitly been comprehended. This work studied processes nanodimpled surface under various strengths directions. results showed that condensed depends competition between force solid-liquid interactions. Increased vertical strength, higher torsion hindered vapor, decreased collision frequency for water molecules cooled surface, elongated cluster when dominates, thus deteriorating performance. While horizontal field, greater strength better performance larger contacting area heat exchange. A wetting transition induced was observed increased certain extent (E > 5.2 × 108 V/m in this study). When V-shaped replaced dimpled as substrate, same occurred showing method universal. Besides, different frequencies influenced both nucleation, exhibiting performances.