@Article{MeléndezVásquezAvil:2019:PaAnIn,
author = "Mel{\'e}ndez V{\'a}squez, Joseph Arthur and Avila, Juan Pablo
Julca",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Federal do ABC (UFABC)}",
title = "A parametric analysis of the influence of the internal slug flow
on the dynamic response of flexible marine risers",
journal = "Ocean Engineering",
year = "2019",
volume = "174",
pages = "169--185",
month = "Feb.",
keywords = "Structural dynamic response, Large displacements, Corotational
formulation, Slug flow.",
abstract = "This paper presents a two-dimensional parametric analysis of the
influence of an internal slug flow on thestructural dynamic
response of flexible risers. The parametric analysis allow us to
study the behaviour of
theparametersinvolvedinthedynamicresponseofflexibleriserswithaninternalslugflow,suchasdisplacements,top
tension, and bending moment, when any of the parameters
characterizing the slug flow is modified.
Toaccomplishthisgoal,acomputationaltoolisdeveloped.Thespatialdiscretizationoftheriserisperformedusingbeam
finite elements and the corotational approach is used for the
two-dimensional formulation of the beamelement. The beam elements
have a linear elastic behaviour and they are submitted to large
displacements,althoughwithsmalldeformations.Theincremental-iterativeNewton-Raphsonschemeforfollowerloadsisusedto
solve the equilibrium equations in dynamic analysis. Time domain
numerical integration is performed
usingtheconstantaverageaccelerationmethod.Theslugflowisviewedasasingle-phasefluidwithvariabledensity,which
is modelled by a periodic function. The numerical results show
good coherence when compared to theexperimental ones, qualifying
the computational tool to conduct parametric studies about dynamic
of flexiblemarine risers with an internal slug flow.",
doi = "10.1016/j.oceaneng.2019.01.031",
url = "http://dx.doi.org/10.1016/j.oceaneng.2019.01.031",
issn = "0029-8018",
language = "en",
targetfile = "melendez_parametric.pdf",
urlaccessdate = "28 abr. 2024"
}