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

OCEAN ENGINEERING

卷:174

Article

Cabrera-Miranda, Jose Manuel^1,2,4  Paik, Jeom Kee^1,2,3 

[1] Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Busan 46241, South Korea

[2] Pusan Natl Univ, Lloyds Register Fdn, Korea Ship & Offshore Res Inst, Res Ctr Excellence, Busan 46241, South Korea

[3] UCL, Dept Mech Engn, London WC1E 7JE, England

[4] Univ Americas Puebla, Cholula 72810, Mexico

关键词: 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;   

DOI  :  10.1016/j.oceaneng.2019.01.044

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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