𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A model for the effects of the voidage distribution around a fluidization bubble

✍ Scribed by R. Collins

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
753 KB
Volume
44
Category
Article
ISSN
0009-2509

No coin nor oath required. For personal study only.

✦ Synopsis

A semi-empirical model which describes the influence of observed voidage variations on gas and particle flows associated with a fluidization bubble is described. It is shown that the effects are very slight so that the incompressible assumption used in Davidson's (1961) model is justified.

πŸ“œ SIMILAR VOLUMES

A model for the distribution of voidage
A model for the distribution of voidage around bubbles in a fluidized bed
✍ Y.A. Buyevich; J.G. Yates; D.J. Cheesman; K.-T. Wu πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 534 KB

A physical model is suggested to explain the occurrence of a shell of varying porosity around a gaseous bubble rising in a fluidized bed. According to the model, this phenomenon is a direct consequence of the necessity to maintain the balance of forces acting on solid particles in the vicinity of th

Measurement of charge distribution aroun
Measurement of charge distribution around a rising bubble in a 2-D fluidized bed
✍ Aihua Chen; Hsiaotao T. Bi; John R. Grace; Flip Kleijn van Willigen; J. Ruud van πŸ“‚ Article πŸ“… 2005 πŸ› American Institute of Chemical Engineers 🌐 English βš– 685 KB

## Abstract A technique has been developed to determine the charge distribution around single rising bubbles in a two‐dimensional fluidized bed. Four induction probes positioned flush with the outside wall of the column and connected to charge amplifiers record induced charge signals as bubbles pas

The pressure field around a two-dimensio
The pressure field around a two-dimensional gas bubble in a fluidized bed
✍ Howard Littman; George A.J. Homolka πŸ“‚ Article πŸ“… 1973 πŸ› Elsevier Science 🌐 English βš– 1021 KB

Measurements of the entire pressure field around a two-dimensional bubble rising in an incipiently fluidized bed are reported. Above the center of pressure line, the field is Laplacian and reasonably well described by Davidson's theory. The pressure wake is closed. It extends for 12 bubble radii bel

The Voidage Function for the Drag Force
The Voidage Function for the Drag Force Ratio in a Liquid-Fluidized Bed
✍ Norman Epstein πŸ“‚ Article πŸ“… 2008 πŸ› John Wiley and Sons 🌐 English βš– 310 KB

Di Felice (1994) has shown that the ratio of the drag coeffi cient, C D C D C , on a sphere in a liquid-fl uidized bed of uniform spheres to the drag coeffi cient, C DS C DS C , on the same sphere in isolation and subjected to the same superfi cial liquid velocity, u, is given by a function Ξ΅ -Ξ² , w