Flooding behaviour in countercurrent gas-liquid flow in vertical tubes with turbulence promoters

2017 ◽  
Vol 115 ◽  
pp. 1363-1371
Author(s):  
Klaus Spindler
Keyword(s):  
Liquid Flow ◽  
Gas Liquid Flow ◽  
Vertical Tubes

Countercurrent gas-liquid flow in parallel vertical tubes

1981 ◽  
Vol 7 (1) ◽  
pp. 1-19 ◽  
Author(s):  
G.B. Wallis ◽  
A.S. Karlin ◽  
C.R. Clark ◽  
D. Bharathan ◽  
Y. Hagi ◽  
...  
Keyword(s):  
Liquid Flow ◽  
Gas Liquid Flow ◽  
Vertical Tubes

Modelling flow pattern transitions for steady upward gas-liquid flow in vertical tubes

AIChE Journal ◽  
1980 ◽  
Vol 26 (3) ◽  
pp. 345-354 ◽  
Author(s):  
Yehuda Taitel ◽  
Dvora Bornea ◽  
A. E. Dukler
Keyword(s):  
Flow Pattern ◽  
Liquid Flow ◽  
Gas Liquid Flow ◽  
Vertical Tubes

Numerical Simulation of Gas-Liquid Slug Flow Along Vertical Pipes Using the Slug Tracking Model

2011 ◽  
Author(s):  
Alex Pachas N. ◽  
Ce´sar Perea M. ◽  
Rigoberto E. M. Morales ◽  
Cristiane Cozin ◽  
Eugeˆnio E. Rosa ◽  
...  
Keyword(s):  
Liquid Flow ◽  
Slug Flow ◽  
Momentum Balance ◽  
Liquid Slug ◽  
Wide Range ◽  
Flow Intermittency ◽  
Tracking Model ◽  
Gas Liquid Flow ◽  
Control Volumes ◽  
Vertical Tubes

The intermittent gas-liquid flow, or slug flow, in vertical tubes occurs over a wide range of gas and liquid flow rates, with many applications, such as oil industry. Predicting the properties of this kind of flow is important to design properly pumps, risers and other components involved. In the present work, vertical upward slug flow is studied through a one-dimensional and lagrangian frame referenced model called slug tracking. In this model, the mass and the momentum balance equations are applied in control volumes constituted by the gas bubble and the liquid slug, which are propagated along the pipe. The flow intermittency is reproduced through the conditions at the entrance of the pipe, which are analyzed in statistical terms. These entrance conditions are given by a sequence of flow properties for each unit cell. The objective of the present work is to simulate the slug flow and its intermittency through the slug tracking model. The numerical results are compared with experimental data obtained by 2PFG/FEM/UNICAMP for air-water flow and good agreement is observed.

Distribution of velocity components and liquid holdup in short vertical tubes with swirl bodies in the inlet part of the tube at cocurrent gas-liquid flow

1982 ◽  
Vol 47 (5) ◽  
pp. 1470-1478
Author(s):  
Kurt Winkler ◽  
František Kaštánek
Keyword(s):  
Liquid Flow ◽  
Tangential Velocity ◽  
Gas Velocity ◽  
Blade Angle ◽  
Liquid Holdup ◽  
Friction Factors ◽  
Liquid Load ◽  
Gas Liquid Flow ◽  
Superficial Gas Velocity ◽  
Vertical Tubes

The axial and tangential velocity components and local liquid holdup rates have been measured in vertical tubes with swirl bodies located in the inlet part of the tube. The tubes were of 70 mm I.D. and H/D = 10-23. The air-water flow was directed upward. Superficial gas velocity was wG = 14-35 m s-1 and specific liquid load QLE = 15-65 m3 m-2 h-1. In the experiments, the blade angle of the swirl body and the liquid inlet have been altered. The resulting centrifugal moments were correlated with friction factors.

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