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Behavior of condensed droplets growth and jumping on superhydrophobic surface
- Source :
- E3S Web of Conferences, Vol 128, p 07003 (2019)
- Publication Year :
- 2019
- Publisher :
- EDP Sciences, 2019.
-
Abstract
- Droplets on the superhydrophobic surface can fall off the surface spontaneously, which greatly promote dropwise condensation. This study considers a continuous droplet condensation process including droplet growth and droplet jumping. A droplet growth model considered NCG is developed and droplet jumping is simulated using VOF (Volume Of Fluid) model. Al–based superhydrophobic surfaces are prepared using chemical deposition and etching method. The Al-based superhydrophobic surface has a contact angle of 157°±1° and a rolling angle of 2°±1°. An observation experiment is designed to observe droplet jumping on superhydrophobic surface using a high– speed camera system. The result of droplet growth model shows a good match with experimental data in mid-term of droplet growth. Fordroplet jumping, simulation and experiment results show that droplet jumping of different diameter hasa universality in a non–dimensional form. The jumping process can be divided into 3 stages and droplet vibration is observed.
- Subjects :
- lcsh:GE1-350
Surface (mathematics)
Materials science
02 engineering and technology
Growth model
Mechanics
010402 general chemistry
021001 nanoscience & nanotechnology
medicine.disease_cause
01 natural sciences
Rolling angle
0104 chemical sciences
Physics::Fluid Dynamics
Contact angle
Vibration
Jumping
Etching (microfabrication)
Physics::Atomic and Molecular Clusters
medicine
Volume of fluid method
0210 nano-technology
lcsh:Environmental sciences
Subjects
Details
- ISSN :
- 22671242
- Volume :
- 128
- Database :
- OpenAIRE
- Journal :
- E3S Web of Conferences
- Accession number :
- edsair.doi.dedup.....cd95bc1d6e3ef965618c482ad9f2c2bb
- Full Text :
- https://doi.org/10.1051/e3sconf/201912807003