MARINHO, J. L. G.; http://lattes.cnpq.br/3886561174909122; MARINHO, José Luis Gomes.
Resumo:
In this work a transient theoretical study is presented to predict the behavior of the
two-phase flow (gas and oil) type Taylor bubble in horizontal, vertical and curved pipes.
The model considers the effect of the surface tension, gravity and viscous forces.
Simulations using software CFX to investigate the hydrodynamic characteristics of the
interaction between Taylor bubbles and liquid were made. The slug standard flow is
laminar regime for the gas and liquid phases. Results of the velocity, pressure and
volume fraction distribution are presented and the effect of the gas injection time (0,02;
0.1; 0.5 and 1.0 s), pipe diameter (3.0; 6.0; 1.2 and 2.4 mm) and curve of the pipe,
velocity (0.05 and 0.1 m/s) and viscosity (0.5; 1.5; 2.5 and 5.0 Pa.s), of the oil in the
shape and length of the bubble are analyzed. It was verified that the injection time
considerably affects in the formation and length of the Taylor bubble and that
gravitational and viscous forces are very important when are compared with the
superficial tension forces.