Abstract
The hydrodynamics of a freely bubbling, gas-solid fluidized bed has been investigated experimentally with non-invasive measuring techniques in a pseudo-2D column filled with glass beads of 400-600 μm fluidized with air. Particle Image Velocimetry (PIV) combined with Digital Image Analysis (DIA) has been used to determine simultaneously the emulsion phase circulation patterns, bubble hold-up and bubble size and velocity distributions. The combination of DIA with PIV allows correcting for the influence of particle raining through the roof of the bubbles on the time-averaged emulsion phase velocity profiles. The time-averaged emulsion phase circulation patterns have been measured as a function of fluidization velocity. Moreover, with DIA the average bubble diameter and bubble velocity as a function of height and fluidization velocity have been determined and found to correspond reasonably well with literature correlations. The experimental data provides a basis for development and validation of CFD models to describe the solids-mixing in gas-solid fluidized beds.
| Original language | Undefined |
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| Title of host publication | 6th International Conference on Multiphase Flow, ICMF 2007 |
| Pages | - |
| Number of pages | 8 |
| Publication status | Published - 9 Jul 2007 |
| Event | 6th International Conference on Multiphase Flow, ICMF 2007 - Leipzig, Germany Duration: 9 Jul 2007 → 13 Jul 2007 Conference number: 6 |
Publication series
| Name | |
|---|---|
| Volume | 300 |
Conference
| Conference | 6th International Conference on Multiphase Flow, ICMF 2007 |
|---|---|
| Abbreviated title | ICMF |
| Country/Territory | Germany |
| City | Leipzig |
| Period | 9/07/07 → 13/07/07 |
Keywords
- IR-68814
- METIS-245463