scholarly journals Simplified 1D Incompressible Two-Fluid Model with Artificial Diffusion for Slug Flow Capturing in Horizontal and Nearly Horizontal Pipes

Energies ◽  
2017 ◽  
Vol 10 (9) ◽  
pp. 1372 ◽  
Author(s):  
Arianna Bonzanini ◽  
Davide Picchi ◽  
Pietro Poesio
Keyword(s):  
Slug Flow ◽  
Fluid Model ◽  
Horizontal Pipes ◽  
Artificial Diffusion ◽  
Two Fluid Model ◽  
Two Fluid

Initiation and Statistical Evolution of Horizontal Slug Flow With a Two-Fluid Model

2013 ◽  
Vol 135 (12) ◽  
Author(s):  
A. O. Nieckele ◽  
J. N. E. Carneiro ◽  
R. C. Chucuya ◽  
J. H. P. Azevedo
Keyword(s):  
Experimental Data ◽  
Slug Flow ◽  
Fluid Model ◽  
Subsequent Development ◽  
Complex Flow ◽  
Horizontal Pipes ◽  
Dimensional Version ◽  
Two Fluid Model ◽  
Log Normal ◽  
Two Fluid

In the present work, the onset and subsequent development of slug flow in horizontal pipes is investigated by solving the transient one-dimensional version of the two-fluid model in a high resolution mesh using a finite volume technique. The methodology (named slug-capturing) was proposed before in the literature and the present work represents a confirmation of its applicability in predicting this very complex flow regime. Further, different configurations are analyzed here and comparisons are performed against different sets of experimental data. Predictions for mean slug variables were in good agreement with experimental data. Additionally, focus is given to the statistical properties of slug flows such as shapes of probability density functions of slug lengths (which were represented by gamma and log-normal distributions) as well as the evolution of the first statistical moments, which were shown to be well reproduced by the methodology.

Initiation and Statistical Development of Slug Flow With a High Resolution Two-Fluid Model

2012 ◽  
Author(s):  
R. C. Chucuya ◽  
J. N. E. Carneiro ◽  
A. O. Nieckele
Keyword(s):  
High Resolution ◽  
Slug Flow ◽  
Fluid Model ◽  
Subsequent Development ◽  
Complex Flow ◽  
Mean Values ◽  
Horizontal Pipes ◽  
Dimensional Version ◽  
Two Fluid Model ◽  
Two Fluid

In the present work, the onset and subsequent development of slug flow in horizontal pipes is investigated by accurately solving the transient one-dimensional version of the Two-Fluid Model using a finite volume technique. Growth of disturbances that eventually bridge the pipe section is an automatic outcome of the solution of the discretized equations in a high resolution mesh, avoiding the need for the commonly used phenomenological models for the stratified to slug transition. Slug dynamics evolve naturally without the need of empirical correlations for slug parameters. This methodology (named “slug-capturing”) was proposed before in the literature and the present work represents a rare confirmation of its applicability in predicting this very complex flow regime. Here, different configurations are analyzed and comparisons are performed against different sets of experimental data. Additionally, statistical analysis of the slug parameters is performed and it is shown through comparisons against experimental measurements that this methodology is able not only to provide mean values of e.g. slug and bubble lengths and their evolution inside the pipe, but also shapes of probability density functions (PDFs), with a good degree of accuracy.

Review of Applicability of the One-dimensional Two-fluid Model to the Prediction of Wave Growth and Slug Evolution in Horizontal Pipes

2010 ◽  
Author(s):  
Raad I. Issa ◽  
Liejin Guo ◽  
D. D. Joseph ◽  
Y. Matsumoto ◽  
Y. Sommerfeld ◽  
...  
Keyword(s):  
Fluid Model ◽  
Wave Growth ◽  
One Dimensional ◽  
Horizontal Pipes ◽  
Two Fluid Model ◽  
The One ◽  
Two Fluid

Applicability of the Momentum-Flux-Parameter Closure for the Two-Fluid Model to Slug Flow

2010 ◽  
Author(s):  
Raad I. Issa ◽  
Marco Montini ◽  
Liejin Guo ◽  
D. D. Joseph ◽  
Y. Matsumoto ◽  
...  
Keyword(s):  
Slug Flow ◽  
Momentum Flux ◽  
Fluid Model ◽  
Flux Parameter ◽  
Two Fluid Model ◽  
Two Fluid

Slug Flow Evolution Along Horizontal Pipelines by the Two Fluid Model

2007 ◽  
Author(s):  
J. N. E. Carneiro ◽  
A. O. Nieckele
Keyword(s):  
Slug Flow ◽  
Fluid Model ◽  
Two Phase ◽  
Fluid Mixture ◽  
Translation Velocity ◽  
Frequency Translation ◽  
State Regime ◽  
Flow Evolution ◽  
Two Fluid Model ◽  
Two Fluid

At the present work a numerical analysis of the slug flow evolution along horizontal pipelines is performed, based on the Two-Fluid Model. For the statistically steady state regime, the slug characteristics, such as frequency, length and translational velocity are determined. An air and water two-phase fluid mixture is examined. The influence of the entrance liquid holdup is address. The frequency, translation velocity and length are compared with empirical correlations available in the literature with very good agreement.

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