Two-phase flow measurements in turbulent hydraulic jumps

Murzyn, F. and Chanson, H. (2009) Two-phase flow measurements in turbulent hydraulic jumps. Chemical Engineering Research and Design, Trans. IChemE, Part A, 87 6: 789-797. doi:10.1016/j.cherd.2008.12.003

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Author Murzyn, F.
Chanson, H.
Title Two-phase flow measurements in turbulent hydraulic jumps
Journal name Chemical Engineering Research and Design, Trans. IChemE, Part A   Check publisher's open access policy
ISSN 0263-8762
1744-3563
Publication date 2009-01-20
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.cherd.2008.12.003
Open Access Status File (Author Post-print)
Volume 87
Issue 6
Start page 789
End page 797
Total pages 9
Editor Stephen Richardson
Place of publication London, UK
Publisher Elsevier
Language eng
Subject 090509 Water Resources Engineering
C1
970109 Expanding Knowledge in Engineering
Abstract Hydraulic jumps are commonly experienced in industrial applications and manufacturing processes, aswell in rivers and canals. The hydraulic jump is the sudden transition from a high-velocity open channel flow to a subcritical flow motion. Despite nearly two centuries of studies, there is still a lack of knowledge on the two-phase flow properties of the turbulent shear layer and the roller. New series of experimental measurements were conducted in hydraulic jumps with Froude numbers between 5 and 8.5, and inflow Reynolds numbers between 38,000 and 62,000. The two-phase flow measurements included some vertical profiles of void fraction, bubble count rate, interfacial velocity and bubble chords. In the air–water shear region, the void fraction and bubble count rate distributions exhibited marked peaks, with the maximum of void fraction always above the location of the maximum bubble count rate. The dimensionless turbulent diffusivity coefficient was estimated. The dimensionless distributions of interfacial velocity compared favourably with some wall-jet flow equations. The data analysis showed that the mean bubble chord in the turbulent shear layer was between 1 mm and 6 mm. The probability distribution functions (PDF) of bubble chord time illustrated a broad spectrum with predominance to small bubbles compared to the mean.
Keyword Hydraulic jumps
Air bubble entrainment
Two-phase flow properties
Experimental Measurement
Bubble sizes
Gas-liquid flows
Turbulent flows
Turbulence
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes The full bibliographic details are: MURZYN, F., and CHANSON, H. (2009). "Two-Phase Flow Measurements in Turbulent Hydraulic Jumps." Chemical Engineering Research and Design, Trans. IChemE, Part A, Vol. 87, No. 6, pp. 789-797 (DOI: 10.1016/j.cherd.2008.12.2003) (ISSN 0263-8762).

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Civil Engineering Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 25 May 2009, 18:54:07 EST by Hubert Chanson on behalf of School of Civil Engineering