Interparticle arrival time analysis of bubble distributions in a dropshaft and hydraulic jump

Gualtieri, Carlo and Chanson, Hubert (2013) Interparticle arrival time analysis of bubble distributions in a dropshaft and hydraulic jump. Journal of Hydraulic Research, 51 3: 253-264. doi:10.1080/00221686.2012.762430


Author Gualtieri, Carlo
Chanson, Hubert
Title Interparticle arrival time analysis of bubble distributions in a dropshaft and hydraulic jump
Journal name Journal of Hydraulic Research   Check publisher's open access policy
ISSN 0022-1686
1814-2079
Publication date 2013-06
Sub-type Article (original research)
DOI 10.1080/00221686.2012.762430
Volume 51
Issue 3
Start page 253
End page 264
Total pages 12
Place of publication Oxfordshire, United Kingdom
Publisher Taylor and Francis
Collection year 2014
Language eng
Formatted abstract
The analysis of bubble clustering in air-water flows may provide some measures of the bubble-turbulence interactions. A cluster of bubbles is as a group of two or more bubbles, with a distinct separation from other bubbles. This paper compares the results of a clustering study in a dropshaft and in a hydraulic jump to point out differences/similarities between those complex turbulent flows. The clustering process was studied through the analysis of the interparticle arrival time (IAT) of the bubbles. The results highlighted the presence of clustering in both bubbly flows due mostly to turbulent break-up. The range of bubbles sizes mainly affected by clustering was identified. The results showed that the bubbly flow in the dropshaft had a density of bubbles per unit flux larger than that in the hydraulic jump. Overall, the results demonstrated the relevance of the IATs analysis in the study of bubbly flows.
Keyword Air bubble entrainment
Bubble clustering process dropshaft
Hydraulic jump
Interparticle arrival time analysis
Laboratory experiments
Poisson distribution
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2014 Collection
 
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