長大弾性管の渦励振に関する基礎的研究
2004 年 2004 巻 195 号 p. 15-23
詳細
2004 年 2004 巻 195 号 p. 15-23
A numerical simulation scheme has been developed for the vortex induced vibration response of flexible risers and has been validated by experimental results. In the experiments, a riser model was forced to surge by fixing the top end of the model to a forced oscillating apparatus in an experimental towing tank. To measure the three-dimensional motion of the model, six CCD cameras were used for each direction, horizontal and vertical. A numerical simulation scheme for three-dimensional dynamics of the flexible risers considering the VIV effects has been developed which is based on the ‘Hamilton's principle’and mode expansion method. The numerical simulation method was validated by comparing with experimental results and showed a good agreement.
