Bubble Size Distribution in Oil-Based Bubble Columns

2008 ◽  
Vol 31 (11) ◽  
pp. 1668-1675 ◽  
Author(s):  
S.-S. Homayouni ◽  
M.-R. Mehrnia ◽  
N. Mostoufi ◽  
M. Rajabi ◽  
A. Yazdani
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution ◽  
Bubble Columns

Modelling of breakage rate and bubble size distribution in bubble columns accounting for bubble shape variations

2018 ◽  
Vol 187 ◽  
pp. 391-405 ◽  
Author(s):  
Weibin Shi ◽  
Jie Yang ◽  
Guang Li ◽  
Xiaogang Yang ◽  
Yuan Zong ◽  
...  
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution ◽  
Bubble Columns ◽  
Bubble Shape ◽  
Breakage Rate

Two-Bubble Class Approach Based on Measured Bubble Size Distribution for Bubble Columns with and without Internals

2019 ◽  
Vol 58 (8) ◽  
pp. 2759-2769 ◽  
Author(s):  
Felix Möller ◽  
Ragna Kipping ◽  
Craig Lavetty ◽  
Uwe Hampel ◽  
Markus Schubert
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution ◽  
Bubble Columns

Bubble size distribution in bubble columns

1990 ◽  
Vol 68 (1) ◽  
pp. 159-161 ◽  
Author(s):  
A. C. Saxena ◽  
N. S. Rao ◽  
S. C. Saxena
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution ◽  
Bubble Columns

Bubble size distribution in the sparger region of bubble columns

2002 ◽  
Vol 57 (1) ◽  
pp. 197-205 ◽  
Author(s):  
Mattia Polli ◽  
Marco Di Stanislao ◽  
Roberto Bagatin ◽  
Eiman Abu Bakr ◽  
Maurizio Masi
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution ◽  
Bubble Columns

Physiochemical properties and reproducibility of air-based sodium tetradecyl sulphate foam using the Tessari method

2016 ◽  
Vol 32 (6) ◽  
pp. 390-396 ◽  
Author(s):  
Mike R Watkins ◽  
Richard J Oliver
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Bubble Size Distribution ◽  
Foam Density ◽  
Physiochemical Properties ◽  
Significant Difference ◽  
Experienced Operator ◽  
Sodium Tetradecyl Sulphate ◽  
Foam Production ◽  
Made In

Objectives The objectives were to examine the density, bubble size distribution and durability of sodium tetradecyl sulphate foam and the consistency of production of foam by a number of different operators using the Tessari method. Methods 1% and 3% sodium tetradecyl sulphate sclerosant foam was produced by an experienced operator and a group of inexperienced operators using either a 1:3 or 1:4 liquid:air ratio and the Tessari method. The foam density, bubble size distribution and foam durability were measured on freshly prepared foam from each operator. Results The foam density measurements were similar for each of the 1:3 preparations and for each of the 1:4 preparations but not affected by the sclerosant concentration. The bubble size for all preparations were very small immediately after preparation but progressively coalesced to become a micro-foam (<250 µm) after the first 30 s up until 2 min. Both the 1% and 3% solution foams developed liquid more rapidly when made in a 1:3 ratio (37 s) than in a 1:4 ratio (45 s) but all combinations took similar times to reach 0.4 ml liquid formation. For all the experiments, there was no statistical significant difference between operators. Conclusions The Tessari method of foam production for sodium tetradecyl sulphate sclerosant is consistent and reproducible even when made by inexperienced operators. The best quality foam with micro bubbles should be used within the first minute after production.

scholarly journals Development of Bubble Characteristics on Chute Spillway Bottom

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1129
Author(s):  
Ruidi Bai ◽  
Chang Liu ◽  
Bingyang Feng ◽  
Shanjun Liu ◽  
Faxing Zhang
Keyword(s):  
Size Distribution ◽  
Bubble Size ◽  
Dissipation Rate ◽  
Bubble Diameter ◽  
Bubble Size Distribution ◽  
Impact Zone ◽  
Air Bubble ◽  
Air Supply ◽  
Bubble Characteristics ◽  
The Impact

Chute aerators introduce a large air discharge through air supply ducts to prevent cavitation erosion on spillways. There is not much information on the microcosmic air bubble characteristics near the chute bottom. This study was focused on examining the bottom air-water flow properties by performing a series of model tests that eliminated the upper aeration and illustrated the potential for bubble variation processes on the chute bottom. In comparison with the strong air detrainment in the impact zone, the bottom air bubble frequency decreased slightly. Observations showed that range of probability of the bubble chord length tended to decrease sharply in the impact zone and by a lesser extent in the equilibrium zone. A distinct mechanism to control the bubble size distribution, depending on bubble diameter, was proposed. For bubbles larger than about 1–2 mm, the bubble size distribution followed a—5/3 power-law scaling with diameter. Using the relationship between the local dissipation rate and bubble size, the bottom dissipation rate was found to increase along the chute bottom, and the corresponding Hinze scale showed a good agreement with the observations.

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