Numerical study of surface tension effects on bubble detachment in a submerged needle

Abstract

This paper analyses adiabatic gas bubble formation, growth, and detachment which are produced from a submerged needle in water with the aim of elucidating the impact of surface tension on bubble properties. A simulation model is utilized to enable examination of the problem for the mentioned parameter. The numerical results are compared with experimental observations on the bubble for validation purposes. The simulation results, including changes in bubble properties during the process, are recorded and a comprehensive research for different surface tensions is applied to understand the effect of this parameter on the bubble. It is found that higher surface tension between gas and water results in larger bubbles right before the departure occurs.