Abstract
The rising velocity of a spherical bubble in contaminated water can be less than a half of that in pure water. This is explained in terms of the Marangoni effect caused by the adsorption of surfactants in liquid phase on bubble surface. In this study, we conduct a numerical simulation with different surfactant species and bulk concentrations, and the dependence of their properties on the rising velocity of a bubble is analyzed through comparison with experiments. The simulation results show good agreement with the experimental ones, and the surface velocity and the concentrations are estimated. We also develop a simulation method for solving bubble deformation in the presence of a surfactant. We succeed in reproducing the conglobation effect of a bubble in surfactant solutions.
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Matsumoto, Y., Uda, T., Takagi, S. (2006). The Effect of Surfactant on Rising Bubbles. In: Balachandar, S., Prosperetti, A. (eds) IUTAM Symposium on Computational Approaches to Multiphase Flow. Fluid Mechanics and Its Applications, vol 81. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4977-3_31
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DOI: https://doi.org/10.1007/1-4020-4977-3_31
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-4976-7
Online ISBN: 978-1-4020-4977-4
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