Numerical Model For Rocking Of Mono-Pile In A Porous Seabed

D-S. Jeng, X. Luo, and J. Zhang
Division of Civil Engineering, University of Dundee, Dundee, Scotland, UK

Offshore wind and wave energy industries have developed considerably in the last two decades. Most offshore energy structures used in the existing projects are mono-piles in shallow water due to simplicity of installations, design and control. Numerous research for the design and modeling of offshore wind energy system have been carried out in the past. However, most previous studies have been limited to a fixed mono-pile, even though rocking of a mono-pile has always been observed and caused damage of offshore wind energy structures.

In this paper, a COMSOL model for the rocking of mono-pile in a porous seabed is presented. In the fluid model, Navier-Stoke Equation is solved for the rocking of mono-piles, while the Biot’s poro-elastic model is solved for the porous seabed. Such a model has not been available and not possible to achieved without COMSOL Multiphysics.