Browse > Article
http://dx.doi.org/10.15435/JILASSKR.2021.26.2.88

Effect of the Droplet Volume on the Evaporative Characteristics of Sessile Droplet  

Jeong, Chan Ho (중앙대학교 기계공학과)
Lee, Hyung Ju (중앙대학교 기계공학과)
Kim, Hong Seok (중앙대학교 기계공학과)
Lee, Seong Hyuk (중앙대학교 기계공학부)
Publication Information
Journal of ILASS-Korea / v.26, no.2, 2021 , pp. 88-95 More about this Journal
Abstract
This study aims to investigate the influence of the droplet volume on the evaporation characteristics of the sessile droplet. In particular, the effect of the free convection in the vapor domain on the evaporation rate was analyzed through the numerical simulation. The commercial code of the ANSYS Fluent (V.2020 R2) was used to simulate the heat transfer in the liquid-vapor domain. Moreover, we used the diffusion model to estimate the evaporation rate for the different droplet volume under the room temperature. It was found that the evaporation rate significantly increases with the droplet volume because of the larger surface area for the mass transfer. Also, the effect of free convection on the evaporation rate becomes significant with an increment of droplet volume owing to the increase in the droplet radius corresponding to the characteristic length of the free convection.
Keywords
Droplet evaporation; Evaporation rate; Free convection; Computational fluid dynamics; Rayleigh number;
Citations & Related Records
연도 인용수 순위
  • Reference
1 D. Y. Zang, S. Tarafdar, Y. Y. Tarasevich, M. D. Choudhury and T. Dutta, "Evaporation of a Droplet: From physics to applications", Phys Rep, Vol. 804, 2019, pp. 1~56.   DOI
2 D. Brutin and V. Starov, "Recent advances in droplet wetting and evaporation", Chem Soc Rev, Vol. 47(2), 2018, pp. 558~585.   DOI
3 R. D. Deegan, O. Bakajin, T. F. Dupont, G. Huber, S. R. Nagel and T. A. Witten, "Contact line deposits in an evaporating drop", Phys Rev E, Vol. 62(1), 2000, pp. 756~765.   DOI
4 W. Bou-Zeid and D. Brutin, "Effect of relative humidity on the spreading dynamics of sessile drops of blood", Colloid Surface A, Vol. 456, 2014, pp. 273~285.   DOI
5 B. Sobac and D. Brutin, "Thermal effects of the substrate on water droplet evaporation", Phys Rev E, Vol. 86(2), 2012.
6 P. L. Kelly-Zion, C. J. Pursell, N. Hasbamrer, B. Cardozo, K. Gaughan and K. Nickels, "Vapor distribution above an evaporating sessile drop", Int J Heat Mass Tran, Vol. 65, 2013, pp. 165~172.   DOI
7 P. L. Kelly-Zion, C. J. Pursell, S. Vaidya and J. Batra, "Evaporation of sessile drops under combined diffusion and natural convection", Colloid Surface A, Vol. 381(1-3), 2011, pp. 31~36.   DOI
8 Z. H. Pan, J. A. Weibel and S. V. Garimella, "Transport mechanisms during water droplet evaporation on heated substrates of different wettability", Int J Heat Mass Tran, Vol. 152, 2020.
9 K. Sefiane and R. Bennacer, "An expression for droplet evaporation incorporating thermal effects", J Fluid Mech, Vol. 667, 2011, pp. 260~271.   DOI
10 M. A. Saada, S. Chikh and L. Tadrist, "Numerical investigation of heat and mass transfer of an evaporating sessile drop on a horizontal surface", Phys Fluids, Vol. 22(11), 2010.
11 G. J. Dunn, S. K. Wilson, B. R. Duffy, S. David and K. Sefiane, "The strong influence of substrate conductivity on droplet evaporation", J Fluid Mech, Vol. 623, 2009, pp. 329~351.   DOI
12 H. Hu and R. G. Larson, "Evaporation of a sessile droplet on a substrate", J Phys Chem B, Vol. 106(6), 2002, pp. 1334~1344.   DOI
13 J. H. Moon, S. M. Lee, C. K. Choi and S. H. Lee, "Modeling of the evaporation rate of liquid droplets on anodized heated surfaces", Int Commun Heat Mass, Vol. 98, 2018, pp. 209~215.   DOI
14 F. Carle, S. Semenov, M. Medale and D. Brutin, "Contribution of convective transport to evaporation of sessile droplets: Empirical model", Int J Therm Sci, Vol. 101, 2016, pp. 35~47.   DOI