F. Raymond et Jm. Rosant, A numerical and experimental study of the terminal velocity and shape of bubbles in viscous liquids, CHEM ENG SC, 55(5), 2000, pp. 943-955
This paper presents an extensive comparison between numerical and experimen
tal results for moderate deformed bubbles concerning their drag coefficient
and deformation in the range (Re,We) = [1,100] x [0,5]. Experiments were m
ade in tap water/glycerol mixtures and the numerical model is derived under
the surfactant-free interface assumption. The experimental procedure and n
umerical model are presented in detail; the corresponding results are compa
red with other analytical, experimental and numerical studies. Finally, exp
erimental and numerical data are compared in order to assess the ability of
the numerical model to predict the bubble drag coefficient and aspect rati
o in a practical situation. It is found that the Values predicted by the nu
merical model are generally in good agreement with the experimental results
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