Abstract
Interfacial area transport equation has been combined to a classical hydrodynamic two-fluid model to investigate the operation of a rectangular bubble column. Interfacial forces are calculated based on interfacial area concentration and average Sauter diameter. Turbulence is modeled by an extra transport equation for bubble-induced turbulence, which allows for the inclusion of experimentally verified anisotropic. The numerical simulations successfully predict both the time-averaged and the dynamics flow behavior, which are dominated by the irregular movements of the bubble plume and the vortical structures in the liquid phase. The frequency of velocity fluctuations and Sauter diameter are investigated: frequency decreases with the superficial gas velocity. Averaged Sauter diameter increases with superficial gas velocity and an equilibrium Sauter diameter appears when the superficial gas velocity increases.
| Original language | English |
|---|---|
| Pages (from-to) | 72-75 |
| Number of pages | 4 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 26 |
| Issue number | 1 |
| State | Published - Jan 2005 |
Keywords
- Bubble column
- Interfacial area concentration
- Two-fluid model
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