原子与分子物理学报2024，Vol.41Issue(3)：60-70,11.DOI:10.19855/j.1000-0364.2024.032001
混合润湿性柱状纳米结构对铜板上纳米氩膜沸腾传热的影响
Effects of columnar nanostructures with mixed wettability on explosive boiling heat transfer of nanoscale argon film over copper plate
摘要
Abstract
The wettability has a significant effect on the solid-liquid interaction,so it has a positive effect on improving the heat transfer rate during the phase change process.Molecular dynamics simulation method was used to study the effect of mixed wettability of columnar nanostructures on pool boiling heat transfer.The influ-ence of mixed wettability and nanostructure column height on the initial boiling time and temperature of liquid and their mechanism were analyzed.The results show that the hydrophobic ratio and column height will affect the initial temperature and time of boiling.Compared with pure hydrophilic wall,increasing hydrophobic ratio chan-ges the properties of solid-liquid interface,reduces boiling temperature,makes it easier to break through poten-tial energy barrier,and advances the initial boiling time of liquid.With the increase of hydrophobic ratio,boiling temperatures of different column heights decrease.When the hydrophobic ratio is the same,increasing the col-umn height enlarges the influence of mixing wettability,and can also lower the boiling initial temperature and ad-vance the boiling time of liquid.This provides an idea for designing micro-nano rough structure and mixed wet-ting surface to enhance boiling heat transfer.关键词
沸腾相变/混合润湿性/纳米结构/传热系数/分子动力学模拟Key words
Boiling phase transitions/Mixed wettability/Nanostructure/Heat transfer coefficient/Molecular dynamics simulation分类
数理科学引用本文复制引用
刘峰瑞,陈占秀,李源华..混合润湿性柱状纳米结构对铜板上纳米氩膜沸腾传热的影响[J].原子与分子物理学报,2024,41(3):60-70,11.基金项目
河北省自然科学基金(E2021202125) （E2021202125）
