Numerical Study of Bubble Column Water-Air System by the VOF Method

Author:

Ahmed Guessab1

Affiliation:

1. Department of Mechanical Engineering, National Polytechnic School of Oran (Maurice Audin), Mechanical Manufacturing Technology, Research Laboratory (LaRTFM-ENPO-MA), Postbox 1523 EL-Mnaouer, Essenia Oran, ALGERIA

Abstract

This paper aims to present a comprehensive study of the dynamics of a bubble using the Volume of Fluid (VOF) model in Fluent software. The simulation of two-phase flows is carried out by calculating the terminal velocity, bubble flow contours at different column heights, and the evolution of bubble circularity and Reynolds number at different times. The calculation was carried out on an air bubble with a diameter equal to 10 mm and zero introduction velocity by modifying the simulation parameters, such as the surface tension, to study their influence on the deformation of the bubble. This study will present four different shape regimes, which are obtained by varying the Bo (Bond number) and Mo (Morton number) values within the corresponding ranges of 1 < Bo < 103 and 5×10-8 < Mo < 102 . In addition, simulations are performed using large density and viscosity ratios of 1000 and 100, respectively. The results are comparable with great precision to the numerical simulation and experimental data.

Publisher

World Scientific and Engineering Academy and Society (WSEAS)

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