中文摘要：

针对国家对潮流能利用的发展需要,提高潮流能水轮机的水力特性,通过将风力提水机设计中的叶素理论引入潮流能水轮机的外形设计中,并加入修正因子优化了叶片翼型的安装角以及弦长,设计出一种水力特性较好的水平轴潮流能水轮机;通过使用CFD软件,将设计的潮流能水轮机进行三维数值模拟。计算结果表明,设计的潮流能水轮机在额定工况的潮流中具有较高的功率系数,且水轮机内外流道无明显脱流、回流现象,具有良好的三维流动特性。

英文摘要：

The blade element theory was used to design tidal current turbines in this study to improve their hydraulic performance and meet the growing need of tidal current energy utilization. We adopted a correction factor to optimize the chord length and setting angle of the blades and obtained a new horizontal axis tidal current turbine of better hydraulic performance. This new turbine was simulated using a CFD code. Results show that it has a high power factor in the rated condition. Analysis of the flows in the internal and external channels of the turbine reveals that the flows have excellent three-dimensional characteristics, free of local separation or reverse flow.