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Local Flow Measurements of Vertical Upward Bubbly Flow in an Annulus

Hibiki, Takashi, Situ, Rong, Mi, Ye, & Ishii, Mamoru (2003) Local Flow Measurements of Vertical Upward Bubbly Flow in an Annulus. International Journal of Heat and Mass Transfer, 46(8), pp. 1479-1496.

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Abstract

Local measurements of flow parameters were performed for vertical upward bubbly flows in an annulus. The annulus channel consisted of an inner rod with a diameter of 19.1 mm and an outer round tube with an inner diameter of 38.1 mm, and the hydraulic equivalent diameter was 19.1 mm. Double-sensor conductivity probe was used for measuring void fraction, interfacial area concentration, and interfacial velocity, and Laser Doppler anemometer was utilized for measuring liquid velocity and turbulence intensity. A total of 20 data sets for void fraction, interfacial area concentration, and interfacial velocity were acquired consisting of five void fractions, about 0.050, 0.10, 0.15, 0.20, and 0.25, and four superficial liquid velocities, 0.272, 0.516, 1.03, and 2.08 m/s. A total of 8 data sets for liquid velocity and turbulence intensity were acquired consisting of five void fractions, about 0.050, and 0.10, and four superficial liquid velocities, 0.272, 0.516, 1.03, and 2.08 m/s. The constitutive equations for distribution parameter and drift velocity in the drift-flux model, and the semi-theoretical correlation for Sauter mean diameter namely interfacial area concentration, which were proposed previously, were validated by local flow parameters obtained in the experiment using the annulus.

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273 since deposited on 25 Oct 2007
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ID Code: 10420
Item Type: Journal Article
Keywords: Void fraction, Interfacial area concentration, Bubble size, Liquid velocity, Turbulence intensity, Double, sensor conductivity probe, Laser Doppler anemometer, Drift, flux model, Gas–liquid bubbly flow, Multi, phase flow, Annulus
DOI: 10.1016/S0017-9310(02)00421-0
ISSN: 0017-9310
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Mechanical Engineering not elsewhere classified (091399)
Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > CLASSICAL PHYSICS (020300) > Fluid Physics (020303)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > INTERDISCIPLINARY ENGINEERING (091500) > Heat and Mass Transfer Operations (091505)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2003 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher
Deposited On: 25 Oct 2007
Last Modified: 11 Aug 2011 00:52

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