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Two-phase flow induced vibrations in a marine riser conveying a fluid with rectangular pulse train mass

Cabrera-Miranda, JM; Paik, J-K; (2019) Two-phase flow induced vibrations in a marine riser conveying a fluid with rectangular pulse train mass. Ocean Engineering , 174 pp. 71-83. 10.1016/j.oceaneng.2019.01.044. Green open access

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Abstract

A riser conveys fluids from a subsea system to a host floater; however, oil and gas phases may alternate, increasing pipe's stress and damaging downstream facilities. This paper studies the nonlinear planar vibrations of a steel lazy wave riser excited by slug flow. The employed formulations comprise the Euler-Bernoulli beam model and the steady plug-flow model with a time-space-varying mass per unit length in the form of a rectangular pulse train. The equations are solved by a Runge-Kutta finite difference scheme and frequency-response curves are constructed for effective tension, curvature, usage factor and fatigue damage. The results offer a useful insight of the slugging frequencies and slug lengths that may receive attention during the design of risers.

Type: Article
Title: Two-phase flow induced vibrations in a marine riser conveying a fluid with rectangular pulse train mass
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.oceaneng.2019.01.044
Publisher version: https://doi.org/10.1016/j.oceaneng.2019.01.044
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Steel lazy wave riser (SLWR), Curved pipe conveying fluid, Two-phase flow-induced vibration, Time-varying mass parametric vibration, Ultimate limit state (ULS), Cumulative fatigue damage
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10067509
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