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首页> 外文期刊>Ocean Engineering >Optimization of blade curvature and inter-rotor spacing of Savonius rotors for maximum wave energy extraction
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Optimization of blade curvature and inter-rotor spacing of Savonius rotors for maximum wave energy extraction

机译：优化Savonius转子的叶片曲率和转子间间距，以获取最大波能

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The water particles are known to undergo orbital motion in wave motion. This orbital motion was studied and seven Savonius rotors with same diameters but different blade angles were constructed and tested in a wave channel to find the optimum blade angle. Experiments were carried out in a two-dimensional wave channel on intermediate depth waves. The submergence of the rotors below the mean water level was varied. The optimum blade curvature for maximum energy extraction was found to be 70° from the rpm measurements. Two arrays of rotors with this blade curvature were then employed at different depths to study the energy extraction from the orbital motion. The flow around the rotors was documented with particle image velocimetry (PIV) measurements. It was found that the optimum performance of the rotors is obtained at the minimum spacing between the rotors. Experiments carried out with two arrays showed that the maximum energy extraction from the orbiting particles takes place when the gap between the upper and lower arrays is less. This concept can be extended to multiple arrays with reducing rotor diameters at deeper submergences.
机译：已知水颗粒在波动中经历轨道运动。研究了这种轨道运动，并构造了七个具有相同直径但叶片角度不同的Savonius转子，并在一个波道中对其进行了测试，以找到最佳叶片角度。实验是在二维波道上对中深度波进行的。转子浸没在平均水位以下的情况有所不同。根据转速测量结果，获得最大能量的最佳叶片曲率是70°。然后在不同的深度使用具有该叶片曲率的两个转子阵列来研究从轨道运动中提取的能量。用粒子图像测速（PIV）测量记录了转子周围的流动。已经发现，在转子之间的最小间隔处获得了转子的最佳性能。用两个阵列进行的实验表明，当上下阵列之间的间隙较小时，会从运行中的粒子中提取出最大的能量。该概念可以扩展到多个阵列，并且在更深的浸没中减小转子直径。

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