The Fairing Arrangement for Vortex Induced Vibration Suppression Effect in Soliton Current

Qi, X.; Zhang, D.; Guo, H., and Chen, Y., 2020. The fairing arrangement for vortex induced vibration suppression effect in soliton current. In: Yang, Y.; Mi, C.; Zhao, L., and Lam, S. (eds.), Global Topics and New Trends in Coastal Research: Port, Coastal and Ocean Engineering. Journal of Coastal Research, Special Issue No. 103, pp. 293–298. Coconut Creek (Florida), ISSN 0749-0208.For oil and gas industry, the riser is an important device connecting the subsea wellhead platform and the production system. Due to its slender nature, it is easily affected by the vortex-induced vibration of the ocean current, which poses a potential danger to the safety of the entire system. Soliton current is a special environmental factor to be considered during riser operation. A faring system have been development and do some test to verify its performance in the previous literature. In this paper, based on the obvious effect for the fairing system to reduce the vortex induced vibration, it has been simulated for the different arrangement for a riser that running under the soliton current. Then it is indicated that cover 57% of the whole length of riser is a cost-effective arrangement suggestion. This arrangement could reduce the transverse Vortex-induced vibration (VIV) response obviously. The maximum ratios of RMS Amplitude divided by External Diameter (A/D) and stress was reduced to 20% compared to the bare one.