Abstract
An experimental study of the rise of small air bubbles (0.1 to 1.0 mm in diameter) in a quiescent pool is described. Local measurements of rise velocity were obtained as a function of height above the source nozzle using a laser-Doppler method. In addition, the bubble diameter was determined simultaneously from the same optical signals. Data are presented for various bubble diameters and spacings in bubble columns for both distilled water and a dilute polymer solution.
It was found that for distilled water the rise velocity near the nozzle reaches the maximum observed in other studies before decelerating to its terminal velocity due to surfactant accumulation at its interface. The maximum rise velocity in dilute polymer was much lower for the same bubble diameter and reached its terminal velocity much faster. The results are shown to be in closer agreement with predictions for a solid sphere in this case.
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References
Durst F (1978) Studies of particle motion by laser-Doppler techniques. Proc Dynamic Flow Conf 1978, Marseille and Baltimore: 345–372.
Lee SL and Srinivasan J (1978) Measurement of local size and velocity probability density distributions in two-phase suspension flows by laser-Doppler technique. Int J Multiphase Flow 4: 141–155.
Martin WW, Abdelmessih AH, Liska JJ and Durst F (1981) Characteristics of laser-Doppler signals from bubbles. Int J Multiphase Flow 7: 439–460.
Ungut A, Yule AJ, Taylor DS and Chiqier NA (1978) Particle size measurement by laser anemometry. J Energy 2: 330–336.
Wallis GB (1974) The terminal speed of single drops or bubbles in an infinite medium. Int J Multiphase Flow 1: 491–508.
Wigley GJ (1978) The sizing of large particles by laser anemometry. J Physics E - Scient Instr 11: 639–642.
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© 1982 Martinus Nijhoff Publishers, The Hague
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Martin, W.W., Chandler, G.M. (1982). The local measurement of the size and velocity of bubbles rising in liquids. In: van Wijngaarden, L. (eds) Mechanics and Physics of Bubbles in Liquids. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7532-3_22
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DOI: https://doi.org/10.1007/978-94-009-7532-3_22
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-7534-7
Online ISBN: 978-94-009-7532-3
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