Vortex Induced Vibration of Flexible Risers

In collaboration with researchers at Brunel University London, we have developed fluid-structural coupled models and numerical procedures for the prediction of dynamic response of flexible risers due to vortex induced vibration (VIV), in cases where accurate simulation of their complex non-linear behaviour is a critical step in the analysis. In the structural simulation, we adopt a multi-scale non-linear finite element procedure which consistently links simulations conducted at a detailed small scale and a large structural scale. The fluid simulation work involves the development of a quasi-three-dimensional fluid code to model the cross flow around the flexible risers. The structural and fluid codes are coupled together by developing an efficient fluid-solid interaction algorithm.