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primary topic: Effect of changing crude oil grade on slug characteristics and flow induced mechanical stresses in pipes

Effect of changing crude oil grade on slug characteristics and flow induced mechanical stresses in pipes
type: AcademicArticle
type: Article
abstract: Slug multiphase flow is known to be the most prevalent regime because of its extensive encounters associated with chaotic behaviour, complexity and instability that cause significant fluctuations in operating conditions and thus lead to undesirable effects. In this study, the effect of varying crude oil grades on slug characteristics is numerically investigated. A partitioned one-way coupling framework of fluidâ��structure interaction (FSI) one-way coupling framework is adopted to investigate the influence of changing oil grades and slug characteristics on the maximum induced stresses in horizontal carbon steel pipe. It was found that increasing crude oil density causes frequent slugging and promotes the formation of liquid slugs further upstream near the inlet with high translational velocity and short wavelength. Therefore, the maximum induced stresses resulting from the interaction between slugs and the inner surface of pipes are strongly dependent on crude oil grade. In modelling extra heavy crude oil, a 40 increase in maximum induced stresses is recorded when the liquid superficial velocity decreases from 1 to 0.86 m/s at a constant natural gas superficial velocity. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
date: 2021
volume: 11
issue: 11
is part of: Applied Sciences (Switzerland)
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

MDPI AG
type: Organization

Applied Sciences (Switzerland)
type: Collection
issn: 20763417

M. Elfaki
type: Person
given name: M.
family name: Elfaki

M. Muhammad
type: Person
given name: M.
family name: Muhammad

M.S. Nasif
type: Person
given name: M.S.
family name: Nasif

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primary topic: Effect of changing crude oil grade on slug characteristics and flow induced mechanical stresses in pipes