Gibilaro and Rowe in their model of a gas fluidised bed containing two particulate species introduced four arbitrary parameters linked to the known mechanisms giving rise to particle movement in such beds. In this work, these parameters are made deterministic by linking them to the physics of the bu
A model for a segregating gas fluidised bed
โ Scribed by L.G. Gibilaro; P.N. Rowe
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 736 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0009-2509
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โฆ Synopsis
A differential equation model is derived to describe particle segregation in a binary mixture of solids fluidised by gas. The model, which is formulated to conform with qualitative descriptions of the mechanism of segregation, yields solutions displaying the unusual features of the steady-state solids-concentration profiles found experimentally and enables appraisals to be made of the relative importance of the contributary mechanisms.
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Well dellned spontaneous oscillations can occur in a gas-fluidised bed with a low resistance support and a large gas space beneath the support. Measurements of the instantaneous pressure drop as a function of time have been carried out in a 10 cm dia. bed with gas space volumes between 11 and 191. A