Flow-regime transitions in fluidized beds of non-spherical particles

- Fluidization of Geldart group D particles was investigated.
- Complex-shaped particles were grouped into granules, fibers and chips, depending on shape factors.
- Fiber- and chip-shaped particles tended to form channel flow.
- Granule particles smoothly transited into bubbling and slugging fluidization.
- Available correlations could not precisely predict transition velocities.