This article presents a numerical investigation concerning the effect of two kinds of axially progressing internal flows (namely, upward and downward) on fluid–structure interaction (FSI) dynamics about a marine riser model which is subject to external shear current. The CAE technology behind the current research is a proposed FSI solution, which combines structural analysis software with CFD technology together. Efficiency validation for the CFD software was carried out first. It has been proved that the result from numerical simulations agrees well with the observation from relating model test cases in which the fluidity of internal flow is ignorable. After verifying the numerical code accuracy, simulations are conducted to study the vibration response that attributes to the internal progressive flow. It is found that the existence of internal flow does play an important role in determining the vibration mode (/dominant frequency) and the magnitude of instantaneous vibration amplitude. Since asymmetric curvature along the riser span emerges in the case of external shear current, the centrifugal and Coriolis accelerations owing to up- and downward internal progressive flows play different roles in determining the fluid–structure interaction response. The discrepancy between them becomes distinct, when the velocity ratio of internal flow against external shear current is relatively high.


    Access

    Download


    Export, share and cite



    Title :

    Effect of bidirectional internal flow on fluid–structure interaction dynamics of conveying marine riser model subject to shear current


    Contributors:


    Publication date :

    2012




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown





    Influence of joint stiffness on the free vibrations of a marine riser conveying fluid

    Kaewunruen, Sakdirat / McCarthy, Timothy / Leklong, Jirapol et al. | Tema Archive | 2008



    Natural frequency analysis of a marine riser considering multiphase internal flow behavior

    Montoya-Hernandez, D.J. / Vazquez-Hernandez, A.O. / Cuamatzi, R. et al. | Tema Archive | 2014


    Automatic conveying system for riser storage yard

    ZHANG PENGFEI / TANG XUDONG / JING HAIDONG et al. | European Patent Office | 2021

    Free access