Abstract
Time periodic generation and coalescence of bubbles by injection of a gas at a constant flow rate through an orifice at the bottom of a quiescent inviscid liquid is investigated numerically using a potential flow formulation. The volume of the bubbles is determined for different values of a Weber number and a Bond number. Single bubbling and different regimes of coalescence are described by these computations. The numerical results show qualitative agreement with well-known experimental results for liquids of low viscosity, suggesting that bubble interaction and coalescence following gas injection is to a large extent an inviscid phenomenon for these liquids, many aspects of which can be accounted for without recourse to wake effects or other viscosity-dependent ingredients of some current models.
Original language | English |
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Pages (from-to) | 164-171 |
Number of pages | 8 |
Journal | European Journal of Mechanics, B/Fluids |
Volume | 25 |
Issue number | 2 |
DOIs | |
State | Published - Mar 2006 |
Externally published | Yes |
Keywords
- Bubble generation
- Coalescence
- Potential flow