Research on Breaking Characteristics of Floating Ice Impacting Wind Turbine Tower Based on Discrete Element Method
When operating in the frozen sea area at high latitude in winter,the wind turbine tower is faced with the impact of floating ice load at different speeds,which leads to the collapse of the structure and irreparable loss.Therefore,taking the offshore wind turbine tower in ice area as the research object,the process of floating ice impacting wind turbine tower is studied.The discrete element method is used to construct floating ice,and the interaction between floating ice and the tower of offshore wind turbine is used to describe the breaking behavior of flat sea ice.In the simulation software EDEM,the collision process between the offshore wind turbine and the flat ice under different ice speed and ice thickness is simulated respectively,and the corresponding stress and crushing conditions of the wind turbine tower are obtained.The simulation results show that the relationship between the increase of floating ice velocity and floating ice thickness and the increase of wind turbine force is nonlinear,and for the same growth rate of wind turbine,the effect of floating ice thickness on wind turbine impact is significantly higher than that of floating ice velocity.
Discrete element methodFloating ice characteristicsWind turbineImpact crushingEDEM
NETL
NSTL
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