Numerical modeling of the free rise of an air bubble
- Authors: Kozelkov A.S.1,2, Kurkin A.A.2, Kurulin V.V.1, Lashkin S.V.1, Tarasova N.V.1, Tyatyushkina E.S.1
-
Affiliations:
- Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics
- Alekseev State Technical University
- Issue: Vol 51, No 6 (2016)
- Pages: 709-721
- Section: Article
- URL: https://journals.rcsi.science/0015-4628/article/view/155380
- DOI: https://doi.org/10.1134/S0015462816060016
- ID: 155380
Cite item
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.
About the authors
A. S. Kozelkov
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics; Alekseev State Technical University
Author for correspondence.
Email: askozelkov@mail.ru
Russian Federation, pr. Mira 37, Nizhny Novgorod oblast, Sarov, 607188; ul. Minina 24, Nizhny Novgorod, 603950
A. A. Kurkin
Alekseev State Technical University
Email: askozelkov@mail.ru
Russian Federation, ul. Minina 24, Nizhny Novgorod, 603950
V. V. Kurulin
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics
Email: askozelkov@mail.ru
Russian Federation, pr. Mira 37, Nizhny Novgorod oblast, Sarov, 607188
S. V. Lashkin
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics
Email: askozelkov@mail.ru
Russian Federation, pr. Mira 37, Nizhny Novgorod oblast, Sarov, 607188
N. V. Tarasova
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics
Email: askozelkov@mail.ru
Russian Federation, pr. Mira 37, Nizhny Novgorod oblast, Sarov, 607188
E. S. Tyatyushkina
Russian Federal Nuclear Center—All-Russian Research Institute of Experimental Physics
Email: askozelkov@mail.ru
Russian Federation, pr. Mira 37, Nizhny Novgorod oblast, Sarov, 607188
Supplementary files
