나노유체 액적의 젖음거동 및 증발 특성Wetting Behavior and Evaporation Characteristics of Nanofluid Droplets on Glass Surfaces
- Authors
- 신동환; 이성혁
- Issue Date
- 2012
- Publisher
- 한국액체미립화학회
- Keywords
- Nanofluid; Evaporation; Volume Fraction; Equilibrium Contact Angle; Perimeter; 나노유체; 증발; 부피비; 평형 접촉각; 둘레길이
- Citation
- 한국액체미립화 학회지, v.17, no.1, pp 9 - 13
- Pages
- 5
- Journal Title
- 한국액체미립화 학회지
- Volume
- 17
- Number
- 1
- Start Page
- 9
- End Page
- 13
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/34942
- ISSN
- 1226-2277
- Abstract
- This study investigates experimentally evaporation characteristics of nanofluid droplets containing 50 nm alumina(Al2O3) particles and the wettability changes on a hydrophilic glass surfaces. From the captured digital images by using a CMOS camera and a magnifying lens, we examined the effect of particle concentration on droplet evaporation rate which can be indirectly deduced from the measured droplet volumes varying with time. In particular, with the use of a digital image analysis technique, the present study measured droplet perimeters and the contact angles to study the wetting dynamics during evaporating process. In addition, we compared the measured total evaporation time with theoretically estimated values. It was found that as the volume fractions of nanofluid increased, the total evaporation time and the initial contact angles decreased, while the droplet perimeters increased.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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