Bubble size analysis in a two-phase countercurrent flow in the narrow rectangular column

Prakash, R and Sangtam, B T and Hembrom, K and Majumder, S K (2022) Bubble size analysis in a two-phase countercurrent flow in the narrow rectangular column. Physics of Fluids, 34(4) .

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The flow of bubbles in a two-phase system has great implications in chemical, petrochemical, and biochemical applications. This work enunciates the measurement of bubble size distribution and bubble aspect ratio in three-different axial zones in the countercurrent flow mode with a gas and liquid velocity range of 0.044-0.321 and 0.019-0.058 m/s, respectively. Bubble size is measured by the photographic technique. The bubble aspect ratio and bubble size distribution results reveal that the impact of gas and liquid velocities is significant on the Sauter mean bubble size. The Sauter mean bubble size increases as the gas velocity increases, whereas it decreases with the liquid velocity. The Sauter mean bubble diameter ranges from 2.65 to 6.16 mm. The distribution of bubble sizes follows the LogLogistic probability density function. In addition, a correlation is also proposed for the interpretation of bubble diameter in terms of Reynolds number and Froude number. The bubble aspect ratio changes with axial zones and gas and liquid velocities. Experiments reveal that the bubble aspect increases with liquid velocity while decreasing with gas velocity and axial zones. The bubble aspect ratio correlations are developed in terms of Eotvos and Reynolds numbers. The present results will be helpful for the process intensification of bubble-aided two-phase flow applications.

Item Type:Article
Official URL/DOI:https://10.1063/5.0083749
Uncontrolled Keywords:Liquid interfacial area, single bubble, aspect ratio, ellipsoidal bubbles, terminal velocity, mass-transfer, shape, drag, distributions, motion
Divisions:Material Science and Technology
ID Code:9287
Deposited By:Dr Mita Tarafder
Deposited On:27 Sep 2022 12:25
Last Modified:27 Sep 2022 12:25
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