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An Analysis of Pressure Drop and Holdup for Liquid‐Liquid Upflow through Vertical Pipes
Author(s) -
Jana A. K.,
Ghoshal P.,
Das G.,
Das P. K.
Publication year - 2007
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200700033
Subject(s) - pressure drop , mechanics , flow coefficient , kerosene , differential pressure , drop (telecommunication) , turbulence , flow (mathematics) , materials science , two phase flow , thermodynamics , engineering , mechanical engineering , physics
The present study has attempted to investigate pressure drop and holdup during simultaneous flow of two liquids through a vertical pipe. The liquids selected were kerosene and water. The measurements were made for phase velocities varying from 0.05–1.2 m/s for both liquids. The pressure drop was measured with a differential pressure transducer while the quick closing valve (QCV) technique was adopted for the measurement of liquid holdup. The measured holdup and pressure drop were analyzed with suitable theoretical models according to the existing flow patterns. The analysis reveals that the homogeneous model is suitable for dispersed bubbly flow whereas bubbly and churn‐turbulent flow pattern is better predicted by the drift flux model. On the other hand, the two fluid flow model accurately predicts the pressure drop in core annular flow.