制冷学报2025，Vol.46Issue(2)：137-144,8.DOI:10.12465/j.issn.0253-4339.2025.02.137
不同温度下液滴撞击不同润湿性倾斜表面的动力学行为
Kinetic Behavior of Droplet Impacts on Inclined Surfaces with Different Wettability at Different Temperatures
摘要
Abstract
Superhydrophobic surfaces,a new type of green material,exhibit promising application prospects in the field of anti-/de-icing.In this paper,the kinetic behavior of impinging droplets on surfaces with different temperatures(-25-16 ℃),different inclination angles(0°-60°),and different wettability(hydrophilic and superhydrophobic surfaces)is investigated through experimental comparisons.The variations of the droplet morphology,spreading factor,spreading time,and contact time are analyzed.The results show that the impinging droplets exhibit different kinetic behaviors after spreading due to the different inclination angles and wettability.The maximum spreading factor and spreading time on hydrophilic surfaces increase with the inclination angle.The variation of the spreading time on superhydrophobic surfaces follows the same trend as that on hydrophilic surfaces,while the maximum spreading factor decreases with an increase in the inclination angle,especially at Ts-25 ℃;Compared to hydrophilic surfaces,the impinging droplets have shorter spreading times on superhydrophobic surfaces,which can reach about 10 times at Ts=-25 ℃.Increasing the wall inclination angle breaks the symmetric bounce of the droplets on the horizontal superhydrophobic surface,thereby shortening the contact time of the droplets.This suggests that increasing the inclination angle can effectively inhibit the freezing of water droplets.关键词
液滴撞击动力学/表面润湿性/表面倾角/表面温度/防/除冰Key words
droplet impact kinetics/surface wettability/surface inclination/surface temperature/anti-/de-icing分类
能源科技引用本文复制引用
陈孝松,郑海坤,张培成,盛伟,郝晓茹..不同温度下液滴撞击不同润湿性倾斜表面的动力学行为[J].制冷学报,2025,46(2):137-144,8.基金项目
国家自然科学基金(52266001)资助项目.(The project was supported by the National Natural Science Foundation of China(No.52266001).) 本文受河南省科技攻关计划(232102241014) （52266001）
河南省高等学校重点科研项目(22A470002)和河南理工大学博士基金项目(B2021-37)资助.(The project was supported by the Sci-ence and Technology Research Project of Henan Province(No.232102241014),the Key Scientific Research Project of Henan Province Colleges and Universities(No.22A470002)and Doctoral Fund Project of Henan Polytechnic University(No.B2021-37).) （22A470002）
