化学工程2024，Vol.52Issue(5)：13-18,38,7.DOI:10.3969/j.issn.1005-9954.2024.05.003
微尺度下润湿性表面对双气泡传热特性的影响
Effect of wetting surface on heat transfer characteristics of double bubbles at microscale
摘要
Abstract
In order to explore the characteristics and heat transfer characteristics of double bubble growth on mixed wetting surface,the lattice Boltzmann method was used to study the effects of different factors on mixed wettability surface on growth and heat transfer process.The results indicate that for pure wettable surfaces,as the wettability decreases,the nucleation time of bubbles decreases,and the detachment time of bubbles from the surface increases.The average heat flux density of the double bubbles growth processes decreases.Mixed surfaces can achieve higher detachment frequency and better heat transfer effect compared to pure wetting surfaces.The overall detachment frequency of mixed wetting surfaces increases at(Lq/Δx)＞0.37(Δx＜30)and decreases at(Lq/Δx)≤0.37(Δx ≥30).The detachment frequency of different hydrophobic sizes at the same distance Lq/Δx decreases first and then increases at(Lq/Δx)＞0.37(Δx＜30),and increases at(Lq/Δx)≤0.37(Δx≥30).The average heat flux density of different hydrophobic sizes at the same distance Lq/Δx shows a decreasing trend at Lq/Δx＞0.37(Δx＜30),with Ls=3(Ls/Lq=0.27)being the optimal heat transfer size,increasing first and then decreasing at(Lq/Δx)≤0.37(Δx≥30),and Ls=5(Ls/Lq=0.45)being the optimal heat transfer size.关键词
格子Boltzmann/混合润湿性/生长过程/换热效果/脱离时间Key words
lattice Boltzmann/mixed wettability/growth process/heat transfer effect/departure time分类
能源科技引用本文复制引用
战洪仁,纪柏辰,刘东灵,刘德彬,张先珍,李帅..微尺度下润湿性表面对双气泡传热特性的影响[J].化学工程,2024,52(5):13-18,38,7.基金项目
国家自然科学基金资助项目(61473056) （61473056）
辽宁省教育厅高校科研基金资助项目(LJ2020017) （LJ2020017）
