Dynamic Behavior of the Water Droplet Impact on a Textured Hydrophobic/Superhydrophobic Surface: The Effect of the Remaining Liquid Film Arising on the Pillars' Tops on the Contact Time

Langmuir ◽  
2010 ◽  
Vol 26 (7) ◽  
pp. 4831-4838 ◽  
Author(s):  
Xiying Li ◽  
Xuehu Ma ◽  
Zhong Lan
Keyword(s):  
Liquid Film ◽  
Dynamic Behavior ◽  
Water Droplet ◽  
Contact Time ◽  
Superhydrophobic Surface ◽  
Droplet Impact

Reduction in the contact time of droplet impact on superhydrophobic surface with protrusions

2021 ◽  
Vol 33 (7) ◽  
pp. 073306
Author(s):  
Yunjie Xu ◽  
Linlin Tian ◽  
Chunling Zhu ◽  
Ning Zhao
Keyword(s):  
Contact Time ◽  
Superhydrophobic Surface ◽  
Droplet Impact

Dynamic Impact Behavior of Water Droplet on a Superhydrophobic Surface in the Presence of Stagnation Flow

2012 ◽  
Vol 232 ◽  
pp. 267-272 ◽  
Author(s):  
Morteza Mohammadi ◽  
Sara Moghtadernejad ◽  
Percival J. Graham ◽  
Ali Dolatabadi
Keyword(s):  
Water Droplet ◽  
Weber Number ◽  
Contact Time ◽  
Superhydrophobic Surface ◽  
Superhydrophobic Surfaces ◽  
Impact Behavior ◽  
Stagnation Flow ◽  
Dynamic Impact ◽  
Air Flow Velocity ◽  
Impact Experiments

The following study investigates splashing of impinging water droplets on superhydrophobic surfaces with and without the presence of a stagnation flow. Droplets were accelerated by either gravity or gravity and co-flow. By changing the height and the air flow velocity different combinations of stagnation flow and droplet velocity were created. The spreading diameter, spreading velocity and contact time were studied for different air and droplet speeds. It was clearly observed that for a fixed impact velocity (i.e. constant Weber number), the presence of the stagnation flow promotes splashing and formation of satellite droplets. Consequently, for the co-flow droplet impact experiments, the mass of the recoiled droplet is significantly smaller than that of the impinging droplet in still air.

scholarly journals Liquid Film Flow Generated by High-speed Droplet Impact in Low-pressure Environment

2015 ◽  
Vol 28 (5) ◽  
pp. 531-537
Author(s):  
Masaya KATO ◽  
Masao WATANABE ◽  
Kazumichi KOBAYASHI ◽  
Toshiyuki SANADA
Keyword(s):  
Liquid Film ◽  
High Speed ◽  
Film Flow ◽  
Low Pressure ◽  
Droplet Impact ◽  
Liquid Film Flow

Simulation of droplet impact on liquid film with CLSVOF

2014 ◽  
Vol 53 ◽  
pp. 26-33 ◽  
Author(s):  
Yali Guo ◽  
Lan Wei ◽  
Gangtao Liang ◽  
Shengqiang Shen
Keyword(s):  
Liquid Film ◽  
Droplet Impact
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