Void fraction and pressure drop in gas-liquid downflow through narrow vertical conduits-experiments and analysis

Citation data:

Chemical Engineering Science, ISSN: 0009-2509, Vol: 171, Page: 117-130

Publication Year:
2017
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DOI:
10.1016/j.ces.2017.05.027
Author(s):
Amit Kumar, Gargi Das, Subhabrata Ray
Publisher(s):
Elsevier BV
Tags:
Chemistry, Chemical Engineering, Engineering
article description
The present paper investigates void fraction and pressure drop characteristics of vertical air-water downflow through millichannels (0.83 ≤ Eotvos Number ≤ 20.6). Experiments have revealed the hydrodynamics to be a function of tube diameter and phase velocities with the functional form being different for different flow patterns. Accordingly, separate mechanistic models have been proposed to predict the aforementioned parameters for bubbly, slug, falling film and annular flow distributions. The proposed analysis have been validated with experimental results of the present study and those reported in literature.

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