Effect of thrust on supersonic gas jet penetration in gas-solid fluidized beds

Cruz, Nestor, Briens, Cedric and Berruti, Franco (2011) Effect of thrust on supersonic gas jet penetration in gas-solid fluidized beds. Powder Technology, 214 1: 38-46.


Author Cruz, Nestor
Briens, Cedric
Berruti, Franco
Title Effect of thrust on supersonic gas jet penetration in gas-solid fluidized beds
Journal name Powder Technology   Check publisher's open access policy
ISSN 0032-5910
1873-328X
Publication date 2011-11-25
Sub-type Article (original research)
DOI 10.1016/j.powtec.2011.07.026
Volume 214
Issue 1
Start page 38
End page 46
Total pages 9
Place of publication Lausanne, Switzerland
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract Most of the jet penetration studies in gas–solid fluidized beds are for subsonic gas jets, for which many correlations can be found in the literature. In this work, horizontal supersonic gas jets, produced by convergent–divergent nozzles, have been studied, and the intent was to investigate the relationship between the thrust produced by supersonic nozzles and the jet penetration. Different nozzle geometries were used, with three gases having different characteristics (air, helium and carbon dioxide) and at different pressures. All the experimental runs were performed with silica sand particles with the same particle size distribution, and the fluidization velocity was set at a constant value of 0.09 m/s.

Jet penetration was measured with a set of triboelectric probes, and it was found that the correlation proposed by Merry, although originally developed for subsonic gas jets, fits really well the experimental results. It was also confirmed that jet penetration displays a strong correlation with the thrust produced by the convergent–divergent nozzles.

A correlation originally proposed by Benjelloun's has been modified and the corrected correlation gives the best predictions for gas jet penetration.
Keyword Gas-solid fluidized beds
Jet penetration
Supersonic nozzles
Triboelectric probes
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Non HERDC
 
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Created: Tue, 03 Jan 2012, 13:54:05 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre