NDLI: Numerical modeling of the free rise of an air bubble

Content Provider	Springer Nature Link
Author	Kozelkov, A. S. Kurkin, A. A. Kurulin, V. V. Lashkin, S. V. Tarasova, N. V. Tyatyushkina, E. S.
Copyright Year	2016
Abstract	The results of a numerical investigation of the dynamics of a single air bubble rising in water are presented. The bubbles, 1, 2.5, 3, 5, 8, and 10 mm in diameter, are considered. An analysis is based on the numerical solution of the complete three-dimensional system of Navier–Stokes equations for a two-phase medium using an implicit approach with the automatic tracking of the gas-water interface by means of separating the volume fractions. Emphasis is placed on an examination of the local physical characteristics of the motion. The calculated mean rise velocities are compared with experimental data. The rising bubble trajectories are shown to be periodic, zigzag or helical in shape, which is due to the variation in their form and the generation of a characteristic turbulent wake behind them. The bubble rise velocities are correlated with the forces acting on the bubbles.
Starting Page	709
Ending Page	721
Page Count	13
File Format	PDF
ISSN	00154628
Journal	Fluid Dynamics
Volume Number	51
Issue Number	6
e-ISSN	15738507
Language	English
Publisher	Pleiades Publishing
Publisher Date	2017-01-04
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	bubble mean rise velocity Navier–Stokes equations SIMPLE method oscillating trajectories Fluid- and Aerodynamics Classical and Continuum Physics Classical Mechanics Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Physics and Astronomy Mechanical Engineering

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