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Dynamic Characteristics of Droplet Impinging on Multi-layer Texture Surfaces
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  • Journal title : Journal of ILASS-Korea
  • Volume 21, Issue 1,  2016, pp.58-63
  • Publisher : Institute for Liquid Atomization and Spray Systems-Korea
  • DOI : 10.15435/JILASSKR.2016.21.1.58
 Title & Authors
Dynamic Characteristics of Droplet Impinging on Multi-layer Texture Surfaces
Moon, Joo Hyun; Lee, Seong Hyuk;
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 Abstract
This study presents the dynamic characteristics of an impinging droplet on hydrophobic and hydrophilic surfaces with various texture area fractions. The flat surface was fabricated by using the drilling technique to make micro-meter hole-patterned surfaces, which shows hydrophobic textured surfaces. Moreover, the hydrophilic textured surfaces were manufactured by anodizing technique on the micro-meter hole-patterned surfaces to generate multi-layer surfaces. Impinging droplet experiments were conducted for various hole-patterned surfaces, with changing impact velocity and texture area fractions. It is observed that an anodizing technique increases wettability by decrease in hole diameter on the textured surfaces. However, micro-drilled surfaces decreases wettability because the hole diameter was so large that air can be trapped under the holes. In addition, the maximum spreading diameter decreases with the texture area fraction for the micro-drilled surfaces because of decrease in wettability.
 Keywords
Anodization;Droplet;Impinging;Hydrophilic;Hydrophobic;
 Language
Korean
 Cited by
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