文献类型：期刊文献

英文题名：Multiphase interactions during droplet impact on dusty superhydrophobic surfaces: Mechanistic insights into dynamic behavior and entrainment pathway

作者：Ji, Jinchao Zhang, Dong Zhang, Liqiang Ding, Yong Zhang, Jingrui An, Zhoujian

第一作者：Ji, Jinchao

通信作者：Zhang, D[1]

机构：[1]Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China;[2]Key Lab Multisupply Syst Solar Energy & Biomass, Lanzhou 730050, Gansu, Peoples R China;[3]Guizhou Inst Technol, Sch Aeronaut & Astronaut Engn, Guiyang 550003, Peoples R China

第一机构：Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China

通信机构：corresponding author), Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China.

年份：2026

卷号：740

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20261120243626);Scopus(收录号：2-s2.0-105032195187);WOS:【SCI-EXPANDED(收录号:WOS:001714940800001)】；

基金：This work was supported by the project of National Natural Science Foundation of China (52366016), Guizhou Provincial Major Scientific and Technological Program (XKBF (2025) 031), Anhui Postdoctoral Scientific Research Program Foundation (2025C1219), Guizhou Science and Technology Innovation Leading Talent Workstation (KXJZ (2025) 024) and Red Willow Outstanding Youth Project of Lanzhou University of Technology.

语种：英文

外文关键词：Superhydrophobic surface; Droplet impact; Entrainment of dust particles; Dynamic behavior; Motion characteristics

摘要：Interactions at liquid-solid interfaces hold significant relevance in both natural phenomena and industrial applications, with droplet impact behavior on superhydrophobic surfaces being particularly illustrative. The dynamic behavior of droplets impacting dusty superhydrophobic surfaces of photovoltaic modules was investigated in this paper, with a focus on dust entrainment mechanisms and droplet motion characteristics. Through experimentally validated high-speed imaging and parameterized analysis, the effect of factors such as dust accumulation density on droplet spreading, rebound, bouncing, and sliding behaviors were examined. Results indicate that dust deposition significantly alters surface wettability and energy dissipation pathways, leading to reduced rebound efficiency and enhanced droplet-dust interactions. At a low dust density of 10.4 g/m2, spreading and rebound were predominantly governed by droplet kinetic energy. However, with growing droplet volume and drop height, both spreading and rebound were increasingly suppressed. Specifically, for 50 mu L droplets, as the dust density increases from 0 to 31.2 g/m2, the maximum spreading factor drops from 2.0 to 1.4, while the minimum rebound factor decreases from 1.0 to 0.3. The maximum slip coefficient reaches 3.0 under clean conditions but increases to 4.0 when the drop height is raised to 3 cm, indicating that greater initial kinetic energy directly strengthens droplet mobility, reflecting a partial compensation for energy dissipation due to particulate resistance under higher kinetic energy. The findings provide insights into the self-cleaning mechanisms of superhydrophobic surfaces and offer guidance for optimizing photovoltaic module maintenance strategies.