Wave-current interactions in marine current turbines
Wave-current interactions in marine current turbines
复制标题
海流涡轮机中的波流相互作用
DOI：
10.1243/14750902jeme45
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
X. Pham
中科院分区：
文献类型：
--
作者：
N. Barltrop;K. Varyani;A. Grant;D. Clelland;X. Pham
本文研究了波浪对潮流垂直轴转子叶片根部弯矩动力特性的影响。将风力发电机的叶素动量理论与线性波理论相结合，并用于分析这种影响。用一个直径为350 mm的转子进行了实验，以验证模拟和比较表明，理论方法预测叶片根部弯矩的能力。可以得出结论，在陡波中，线性理论低估了弯矩的动态行为。然而，在长波中，线性理论工作得很好。转子叶片根部的弯矩波动幅度很大（面外弯矩平均值的50%，面内弯矩平均值的100%），这对潮汐流转子的设计很重要。
The influence of waves on the dynamic properties of bending moments at the root of blades of tidal stream vertical-axis rotors is reported. Blade element-momentum theory for wind turbines is combined with linear wave theory and used to analyze this influence. Experiments were carried out with a 350 mm diameter rotor to validate the simulation and the comparison shows the ability of the theoretical approach to predict the blade root bending moments. It can be concluded that, in steep waves, linear theory underestimates the dynamic behaviour of bending moments. However, in long waves, linear theory works well. Bending moments at roots of rotor blades fluctuate with significant amplitudes (as much as 50 per cent of mean value for out-of-plane bending moment and 100 per cent of mean value for in-plane bending moment), which will be important for design of tidal stream rotors.