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Measurement of some basic parameters in two‐phase annular flow
Author(s) -
Quandt E. R.
Publication year - 1965
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690110223
Subject(s) - mechanics , turbulence , flow (mathematics) , materials science , volumetric flow rate , core (optical fiber) , open channel flow , momentum transfer , momentum (technical analysis) , optics , two phase flow , diffusion , transverse plane , phase (matter) , thermodynamics , chemistry , physics , composite material , engineering , finance , structural engineering , organic chemistry , scattering , economics
The vertical upflow of air‐water mixtures in the dispersed‐annular flow regime has been studied in a ¼ × 3‐in. rectangular channel. Dye injection into the wall film was used to determine film and gas core properties along with the rate of droplet interchange between the core and the film. Visual observations demonstrated that the most important characteristic of this flow regime is the surface waves generated by the gas flow over the liquid film. Despite the surface waves, these data indicate that the liquid film approximately follows the generalized u + — y + relationship for turbulent pipe flow. The droplet motion is discussed in terms of transverse diffusion and momentum transfer.