Abstract For the purpose of meeting the wind field in urban area, the performances of a newly invented cross-axis wind turbine (CAWT), which consists of the advantages of horizontal and vertical axis wind turbines (HAWTs and VAWTs), was examined in a calibrated open-circuit low speed wind tunnel. Firstly, to ensure the quality of the wind tunnel, the evaluations in accordance with the flow uniformity, turbulent intensity and pressure gradient along the test section were conducted within the wind tunnel, based on the IEC61400-12 standard. Furthermore, the CAWT was tested with and without the artificial turbulence generator for examining the static and dynamic performances within the steady/unsteady wind conditions at various Reynolds numbers, and the blockage inside the wind tunnel was additionally taken into account. The results showed that both the static and dynamic performances were improved with the addition of turbulence generator. Moreover, the payback period of the CAWT was calculated associated with its power performance.

中文翻译：

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不稳定风对新开发的交叉轴风力发电机性能的影响：风洞研究

摘要 为适应城市地区风场的需要，对新型横轴风力机（CAWT）的性能进行了研究，该机综合了水平轴和垂直轴风力机（HAWTs和VAWTs）的优点。校准开路低速风洞。首先，为保证风洞的质量，在风洞内，依据IEC61400-12标准，对沿试验段的流动均匀性、湍流强度和压力梯度进行了评价。此外，CAWT 在使用和不使用人工湍流发生器的情况下进行了测试，以检查各种雷诺数下稳态/非稳态风条件下的静态和动态性能，并额外考虑了风洞内的堵塞。结果表明，加入湍流发生器后，静态和动态性能均得到改善。此外，CAWT 的投资回收期与其功率性能相关。