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首页> 外文期刊>Journal of Fluid Science and Technology >Effects of end plates on performance of a small straight-bladed vertical axis wind turbine
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Effects of end plates on performance of a small straight-bladed vertical axis wind turbine

机译：端板对小型直叶片垂直轴风力发电机性能的影响

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The time mean characteristics and the torque variation of the straight-bladed vertical axis wind turbine attached with various end plates were examined in wind tunnel experiments, and they were associated with the effect of the wing tip shape on the performance of the wind turbine. In the low tip speed ratio range, the time mean torque and the time mean power coefficients are reduced by attaching end plates. In the high tip speed ratio range, the time mean torque and the time mean power coefficients are increased by attaching end plates except for certain condition. Their maximum increase takes place at the condition that end plates are attached horizontally toward the side of the rotating axis. The effect of end plates was discussed by comparing the variation in the phase averaged torque coefficient. For each condition at the low tip speed ratio and the high tip speed ratio, the phase averaging analysis is able to specify the particular phase concerned to the significant change of the time mean torque coefficient and give the physical interpretation of the phenomenon.
机译：在风洞实验中研究了附有各种端板的直叶片垂直轴风力涡轮机的时均特性和扭矩变化，并将其与翼尖形状对风力涡轮机性能的影响相关联。在低速比范围内，通过安装端板可降低时间平均转矩和时间平均功率系数。在高叶尖速比范围内，除某些条件外，通过安装端板可以增加时间平均转矩和时间平均功率系数。它们的最大增加发生在端板水平地朝向旋转轴的一侧安装的情况下。通过比较相位平均扭矩系数的变化来讨论端板的作用。对于低速端速比和高速端速比的每种情况，相位平均分析能够指定与时间平均转矩系数的显着变化有关的特定相位，并给出现象的物理解释。

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