Local flow measurements of vertical upward bubbly flow in an annulus

Hibiki, Takashi, Situ, Rong, Mi, Ye, and 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.

[img] PDF (Submitted version) - Submitted Version
Restricted to Repository staff only

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1016/S0017-9310(02)...

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 eight data sets for liquid velocity and turbulence intensity were acquired consisting of two 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.

Item ID: 21510
Item Type: Article (Refereed Research - C1)
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; multiphase flow; annulus
ISSN: 1879-2189
Date Deposited: 27 Jun 2012 04:14
FoR Codes: 09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 50%
09 ENGINEERING > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations @ 50%
SEO Codes: 85 ENERGY > 8504 Energy Transformation > 850403 Nuclear Energy @ 50%
85 ENERGY > 8507 Energy Conservation and Efficiency > 850701 Commercial Energy Conservation and Efficiency @ 50%
Downloads: Total: 2
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page