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Abstract
In the present work a numerical analysis of the slug flow in inclined pipelines is performed with an aim to improve the understanding of slug flow characteristics over hilly-terrain section. The solution is obtained with the two-fluid model on its one-dimensional form. It consists of two sets of conservation equations of mass and linear momentum for the liquid and gas phases. The slug capturing methodology involves the numerical solution of the equations using a finite volume formulation, which is capable of naturally predicting the onset of slugging from a stratified flow regime, as well as the growth and collapse of the slugs. Flows of an oil–gas mixture in slightly inclined pipe configurations are investigated. Three types of pipelines were considered: horizontal, descending and a V-section pipeline. The influence of the gravity effect in average slug parameters, such as frequency, velocity and length is addressed. Qualitative comparisons with experimental observations in the literature show that the methodology seems to be able to correctly predict the effect of pipe inclination on the occurrence (or not) of the slug regime, as well as different overall slugging behaviour in V-section pipes if different inlet gas and liquid superficial velocities are imposed.
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Published on 01/01/2007
Volume 2007, 2007
DOI: 10.2495/mpf070181
Licence: CC BY-NC-SA license
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