Spreading of water droplets and aqueous polymer solutions on a solid horizontal surface
DOI:
https://doi.org/10.33408/2519-237X.2025.9-4.542Keywords:
contact angle, equilibrium contact angle, surface tension coefficient, dynamic viscosity, kinematic viscosityAbstract
Purpose. To experimentally investigate and compare with theoretical calculations the kinetics of spreading of a drop of an aqueous solution of a polymer and boiled tap water on a horizontal solid surface.
Methods. Experimental studies.
Findings. The following were found experimentally: the coefficient of surface tension of a liquid drop at the boundary with air; viscosity at low shear rates of the liquid and its density; equilibrium contact angle. It was also established that there is a limited spreading of the droplet up to a radius that corresponds to the equilibrium contact angle. A comparison of theoretical and experimental data on the change in the droplet spreading radius over time was carried out, which showed that the results are in qualitative agreement with each other.
Application field of research. The obtained results are important for studying the dynamics of the process of extinguishing fires of solid materials with aqueous solutions of polyacrylamide of different concentrations.
References
Baikov V.I., Korobko E.V., Goncharova N.A. Spreading of a liquid droplet over a solid horizontal surface. Journal of Engineering Physics and Thermophysics, 2003. Vol. 76, No. 2. Pp. 274–278. DOI: https://doi.org/10.1023/A:1023640831609.
Vavkushevskii A.A., Arslanov V.V., Stepanenko V.Yu., Ogarev V.A. Spreading of viscous liquid drop on solid horizontal surface. Colloid Journal of the USSR, 1989. Vol. 51, No. 3. Pp. 379–383. EDN: https://elibrary.ru/XOASZP.
Korobko E.V., Gorodkin R.G., Mel'nichenko V.V. Spreading of a drop of an electrorheological suspension in an external field. Journal of Engineering Physics and Thermophysics, 1997. Vol. 70, No. 5. Pp. 763–768. DOI: https://doi.org/10.1007/BF02657635.
Baykov V.I., Nakhay D.M., Mikanovich D.S. Rastekanie kapli nen'yutonovskoy vyazkoy zhidkosti po tverdoy gorizontal'noy poverkhnosti [Spreading of a drop of non-Newtonian viscous liquid over a solid horizontal surface]. Journal of Civil Protection, 2024. Vol. 8, No. 3. Pp. 312–324. (rus). DOI: https://doi.org/10.33408/2519-237X.2024.8-3.312. EDN: https://elibrary.ru/JCOHEB.
Kaminer A.A., Yakhno O.M. Gidromekhanika v inzhenernoy praktike [Hydromechanics in engineering practice]. Kiev: Tekhnika, 1987. 174 p.
Published
How to Cite
License
Copyright (c) 2025 Baykov V.I., Nakhay D.M.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
