Dynamic Response Study of Steel Catenary Riser Based on Slender Rod Model View Full Text


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Article Info

DATE

2019-03

AUTHORS

Zhen Liu, Hai-yan Guo

ABSTRACT

A numerical model of the steel catenary riser (SCR) is built based on the slender rod model. The slender rod model, which describes the behavior of the slender riser in terms of the center line position, can solve the geometrical nonlinearity effectively. In a marine environment, the SCR is under the combined internal flow and external loads, such as wave and current. A general analysis considers only the inertial force and the drag force caused by the wave and current. However, the internal flow has an effect on the SCR; it is essential to explore the dynamic response of the SCR with the internal flow. The SCR also suffers the lift force and the fluctuating drag force because of the current. Finite element method is utilized to solve the motion equations. The effects of the internal flow, wave and current on the dynamic response of the SCR are considered. The results indicate that the increase of the internal flow density leads to the decrease of the displacement of the SCR, while the internal flow velocity has little effect on the SCR. The displacement of the SCR increases with the increase of the wave height and period. And the increasing wave period results in an increase in the vibration period of the SCR. The current velocity changes the displacements of the SCR in x- and z-directions. The vibration frequency of the SCR in y-direction increases with the increase of the current velocity. More... »

PAGES

57-64

References to SciGraph publications

Journal

TITLE

China Ocean Engineering

ISSUE

1

VOLUME

33

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s13344-019-0006-8

DOI

http://dx.doi.org/10.1007/s13344-019-0006-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1111822512


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