Understanding vortex-induced vibration characteristics of a long flexible marine riser by a bidirectional fluid–structure coupling method

2019 ◽  
Vol 25 (2) ◽  
pp. 620-639
Author(s):  
Xiangxi Han ◽  
Wei Lin ◽  
Ang Qiu ◽  
Zhiqiang Feng ◽  
Jiaming Wu ◽  
...  
Keyword(s):  
Vibration Characteristics ◽  
Coupling Method ◽  
Marine Riser ◽  
Fluid Structure ◽  
Vortex Induced Vibration

HAM Solutions for Vortex-Induced Vibration of a Circular Cylinder

2014 ◽  
Author(s):  
Zhiliang Lin ◽  
Longbin Tao
Keyword(s):  
Circular Cylinder ◽  
Practical Importance ◽  
Nonlinear Problems ◽  
Van Der Pol Oscillator ◽  
Fluid Structure ◽  
Vortex Induced Vibration ◽  
Highly Nonlinear ◽  
Homotopy Analysis ◽  
Simple Linear Equation ◽  
Wake Oscillation

The vortex-induced vibration (VIV) phenomenon is result of fluid-structure interaction which occurs in many engineering fields. The study of VIV of a circular cylinder is of practical importance (such as in marine cables and flexible risers in petroleum production). In this paper, one classical phenomenological VIV model — the motion of the cylinder is modeled by a simple linear equation, and the fluctuating nature of the vortex wake oscillation is modeled by a van der Pol oscillator, is analyzed. Firstly, the homotopy analysis method (HAM), a powerful technique for highly nonlinear problems, is developed to solve the coupled fluid-structure dynamical system with the convergence of the homotopy series solutions being demonstrated. Based on the HAM solutions, some properties of the fully nonlinear classical coupled VIV model are presented. All the results proved that the proposed HAM scheme has potential to be an effective analytic technique to study the VIV problems.

A vortex induced vibration of marine riser in waves

2011 ◽  
Vol 30 (4) ◽  
pp. 96-101 ◽  
Author(s):  
Min Lou ◽  
Wenyi Dong ◽  
Haiyan Guo
Keyword(s):  
Marine Riser ◽  
Vortex Induced Vibration
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