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Shapes of ellipsoidal bubbles in infinite stagnant liquids.

Authors :
Aoyama, S.
Hayashi, K.
Hosokawa, S.
Tomiyama, A.
Source :
International Journal of Multiphase Flow. Mar2016, Vol. 79, p23-30. 8p.
Publication Year :
2016

Abstract

Aspect ratios E of ellipsoidal bubbles in infinite stagnant clean liquids are measured for log M = −6.6, −5.5, −4.9 and −3.9, where M is the Morton number. An empirical correlation of E applicable to a wide range of the Morton number is proposed by making use of the present data and Sugihara's data at log M = −11 (2007). The aspect ratio in this correlation is expressed in terms of the combination of the Eötvös number and the bubble Reynolds number to account for the effects of the inertial, viscous, buoyant and surface tension forces on E . Terminal velocities of ellipsoidal bubbles are accurately predicted by using the proposed correlation and a drag correlation proposed by Rastello et al. (2011). [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03019322
Volume :
79
Database :
Academic Search Index
Journal :
International Journal of Multiphase Flow
Publication Type :
Academic Journal
Accession number :
111977637
Full Text :
https://doi.org/10.1016/j.ijmultiphaseflow.2015.10.003