Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Analysis of Slug Flow in Horizontal Pipes
Submission Author:
Cristiane Cozin , PR
Co-Authors:
Bruna Patricia Naidek, Cristiane Cozin, Marco Germano Conte, Fausto Arinos Barbuto, Rigoberto Morales
Presenter: Bruna Patricia Naidek
doi://10.26678/ABCM.COBEM2017.COB17-1226
Abstract
Two-phase slug flow is present in several industrial processes, especially in the oil industry when oil and gas are produced and transported. Slug flow is characterized by the intermittent succession of liquid slugs having a large momentum, followed by long bubbles of compressible gas. Few mathematical models for this complex flow can be found in the literature. Among those, one might mention the Eulerian two-fluid and drift flux and the Lagrangian slug tracking. Slug tracking modelling requires the previous knowledge of some parameters such as gas and liquid superficial velocities, liquid slug and bubble lengths, and gas and liquid fractions. In this work, three methodologies for the flow initialization in a simulator running a slug tracking model are evaluated. The first methodology consists in using random values from a previously defined list for the flow parameters. The second uses previously simulated data and calculates the gas superficial velocity with the [1] formulation. The last one was the use of the simulated bubble and liquid slug lengths, calculation of the gas fraction and the use of other parameters determined with a model. By analysing the results of the simulations using the three methodologies, it was observed that they provided results in good agreement with experimental data. However, when analysing the probability density functions, it was found that the bubble velocity is best approximated by the third methodology.
Keywords
Slug Flow, Gas-liquid slug flow, Slug Tracking, methodologies for the initialization
