Investigation Of Slug Flow Characteristics In
Inclined Pipelines
Author(s)
J. N. E. Carneiro & A. O. Nieckele
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.
Keywords: slug flow, incline pipeline.
1 Introduction
Slug flow is a two-phase flow pattern which is characterized by a sequence of
packs of liquid separated by long gas (Taylor) bubbles flowing over a liquid film
inside the pipe, and is normally associated with high pressure-drops and a
considerable degree of intermittency in the system. In offshore production
Keywords
slug flow, incline pipeline.
Related Book
Other papers in this volume
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