The ice loading process has a clear stochastic nature due to variations in the ice conditions and in the ice-structure interaction processes of offshore wind turbine. In this paper, a numerical method was applied to simulate a monopile fixed-bottom and a spar-type floating wind turbine in either uniform or randomly varying ice conditions, where the thickness of the ice encountered by the spar were assumed to be constant or randomly generated. A theoretical distribution of the ice thickness based on the existing measurements reported in various literatures was formulated to investigate the response characteristics of the monopile wind turbine and spar wind turbine in such ice conditions.The effect of the coupling between the ice-induced and aerodynamic loads and responses for both operational and parked conditions of the rotor was studied. Moreover, the dynamic response of wind turbine in randomly varying ice was compared and verified with that of the wind turbine in constant ice.
|Title of host publication||The Proceedings of the 28th (2018) International Ocean and Polar Engineering Conference|
|Number of pages||9|
|Publication status||Published - 01 Jun 2018|
|Name||International Ocean and Polar Engineering Conference: Proceedings|
Shi, W., Tan, X., Zhou, L., Ning, D., & Karimirad, M. (2018). Investigation on Ice Loads for Offshore Wind Turbine in Varying Ice Conditions. In The Proceedings of the 28th (2018) International Ocean and Polar Engineering Conference (pp. 483-491). (International Ocean and Polar Engineering Conference: Proceedings).