Finite Element Analysis of Tidal Turbine Blade Subjected to Impact Loads from Sea Animals
Finite Element Analysis of Tidal Turbine Blade Subjected to Impact Loads from Sea Animals
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DOI：
10.3390/en14217208
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发表时间：
2021-11
期刊：
影响因子：
3.2
通讯作者：
Ilias Gavriilidis;Yuner Huang
中科院分区：
文献类型：
--
作者：
Ilias Gavriilidis;Yuner Huang
本文研究了潮流涡轮叶片在海洋动物冲击载荷作用下的结构响应。利用有限元建模软件ABAQUS建立了一个全尺寸的潮汐涡轮叶片模型，并假定成年虎鲸(Orcinus Orca)为简化几何模型来模拟对叶片的冲击。以NACA 63-8XX系列为基础，建立了涡轮叶片的翼型曲线，并用实验结果对海洋动物的几何和材料特性进行了标定。数值模型模拟了叶片的动态响应，考虑了与实际生活场景相对应的叶片的径向速度。模拟了不同海生动物速度矢量的大小和运动轨迹，研究了它们对涡轮叶片塑性变形的影响。此外，还对多次冲击进行了分析，以监测叶片材料中的塑性应变累积。最后，通过对不锈钢材料和碳钢材料模型计算结果的比较，评价了不锈钢材料在潮流涡轮叶片抗冲击方面的潜在应用。
The present work investigates structural response of tidal stream turbine blades subjected to impact loads from sea animals. A full-scale tidal turbine blade model was developed using a finite element modelling software ABAQUS, while a simplified geometry of an adult killer whale (Orcinus orca) was assumed in simulating impact on the blade. The foil profiles along the turbine blade were based on the NACA 63-8XX series, while the geometric and material properties of the sea animal were calibrated with experimental results. The numerical model simulated the dynamic response of the blade, accounting for radial velocities of the blade corresponding to real life scenarios. Different magnitudes and trajectories of the velocity vector of the sea animal were simulated, in order to investigate their influence on the turbine blade’s plastic deformation. Furthermore, multiple impacts were analysed, in order to monitor the accumulation of plastic strain in the material of the blade. Finally, the potential application of stainless steel material in tidal stream turbine blades for impact resistance was evaluated, through comparison of numerical results obtained from models using stainless steel and mild carbon steel materials.