Abstract
The gas-liquid mass transfer coefficient was investigated in a novel multiphase reactor: the rotor-stator spinning disc reactor. Direct Numerical Simulations of the flow field around a single bubble in the reactor showed that vortex stretching invoked the presence of turbulence inside the thin liquid film surrounding the bubble. The Direct Numerical Simulations further provided a measure for the eddy diffusivity in the thin liquid film caused by this increase in vorticity. An expression was subsequently derived from a mass balance using these eddy diffusivities in order to estimate the order of magnitude of gas-liquid mass transfer coefficients. These estimates were found to lie more in line with experimental results in literature than previously used mass transfer models based on Higbie's penetration theory.
| Original language | English |
|---|---|
| Pages (from-to) | 14-24 |
| Number of pages | 11 |
| Journal | Chemical engineering science |
| Volume | 129 |
| DOIs | |
| Publication status | Published - 6 Jun 2015 |
Keywords
- Direct numerical simulation
- Gas-liquid mass transfer
- Hydrodynamics
- Rotor-stator spinning disc reactor
- 2023 OA procedure
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