Abstract.
The evaporation and crystallization process for sessile saline droplets during depressurization is experimentally studied. The relationship between ambient pressure and the crystallization pattern is primarily discussed. When the ambient pressure is low, salt particles are easily formed at the droplet contact line. In contrast, when the ambient pressure is similar to atmospheric pressure, it is more likely for cubic crystals to be formed inside the droplet. By analysing the contact angle fluctuation during crystallization, the experimental results show that the growth of a cubic salt crystal under high ambient pressure or low salt concentration leads to a greater deformation of the liquid-gas interface and a larger contact angle fluctuation. Finally, the Peclet number Pe is introduced to reflect the ratio of the rate of ion advection to the rate of diffusion. The Pe number is larger at lower ambient pressure, which means that the external mass transfer and convection effect is more significant under low pressure, with salt particles easily formed at the droplet contact line. The effect of concentration diffusion inside the droplet increases at higher ambient pressure, thereby, making it easy for cubic crystals to be formed inside the droplet.
Graphical abstract
Similar content being viewed by others
References
J.A. Schuil, K.K. Bool, Comput. Chem. Eng. 9, 295 (1985)
O.A. Hamed, M.A.K. Al-Sofi, M. Imam, G.M. Mustafa, K.B. Mardouf, H. Al-Washmi, Desalination 128, 281 (2020)
W.L. Cheng, H. Chen, L. Hu, W.W. Zhang, Int. J. Heat Mass Transfer 84, 149 (2015)
B. Cai, Y. Yin, Y. Zheng, W. Wang, H. Gu, J. Yao, H. Wang, Desalination 465, 25 (2019)
D. Zhang, B.C. Zhao, J.J. Yan, Q.Z. Yang, Int. J. Heat Mass Transfer 79, 618 (2014)
L. Liu, Q.C. Bi, H.X. Li, Microgravity Sci. Technol. 21, 255 (2009)
L. Liu, M.L. Mi, Microgravity Sci. Technol. 25, 295 (2014)
A.E. Muthunayagam, K.R. Ramamurthi, J.R. Paden, Appl. Therm. Eng. 25, 941 (2005)
F. Fathinia, Y.M. Al-Abdeli, M. Khiadani, Int. J. Therm. Sci. 145, 106037 (2019)
D. Brutin, V. Starov, Chem. Soc. Rev. 47, 558 (2018)
D. Zang, S. Tarafdar, Y.Y. Tarasevich, M.D. Choudhury, T. Dutta, Phys. Rep. 804, 1 (2019)
S. Tarafdar, Y.Y. Tarasevich, M.D. Choudhury, T. Dutta, D. Zang, Adv. Condens. Matter Phys. 2018, 5214924 (2018)
M.D. Choudhury, T. Dutta, S. Tarafdar, Colloids Surf. A: Physicochem. Eng. Asp. 432, 110 (2013)
T. Dutta, A. Giri, M.D. Choudhury, S. Tarafdar, Colloids Surf. A: Physicochem. Eng. Asp. 432, 127 (2013)
N. Shahidzadeh, S. Rafai, D. Bonn, G. Wegdam, Langmuir 24, 8599 (2008)
N. Shahidzadeh, M.F.L. Schut, J. Desarnaud, M. Prat, D. Bonn, Sci. Rep. 5, 10335 (2015)
H.M. Gorr, J.M. Zueger, D.R. McAdams, J.A. Barnard, Colloids Surf. B 103, 59 (2013)
S.A. McBride, S. Dash, K.K. Varanasi, Langmuir 34, 12350 (2018)
X. Zhong, J. Ren, F. Duan, J. Phys. Chem. B 121, 7924 (2017)
A. Askounis, K. Sefiane, V. Koutsos, M.E.R. Shanahan, Colloids Surf. A: Physicochem. Eng. Asp. 441, 855 (2014)
B.E. Polling, J.M. Prausnitz, J.P. O’ Connel, The Properties of Gases and Liquids, fifth edition (McGraw-Hill, New York, 2001)
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s Note
The EPJ Publishers remain neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Liu, L., Zhang, K., Kong, S. et al. Evaporation and crystallization process for sessile saline droplets during depressurization. Eur. Phys. J. E 43, 36 (2020). https://doi.org/10.1140/epje/i2020-11956-9
Received:
Accepted:
Published:
DOI: https://doi.org/10.1140/epje/i2020-11956-9