Abstract Detailed studies on wind turbines have been attracting increasing attention in recent years in order to save fossil resources and protect the environment. Vertical axis wind turbines (VAWTs) are not as popular as horizontal axis wind turbines (HAWTs) because of their relatively low efficiency. Based on CFD approaches, this paper studies the influence of the aerofoil’s maximum camber as well as its position along the chord on the performance of the VAWT. During this process, a Kriging model is established to reflect the functional relationship between the design variables and the power coefficient of the VAWT and the numerical samples of the blade configuration for this model are accessed by the Latin Hypercube Sampling approach. The influence of the aerofoil’s thickness is studied based on the two-dimensional symmetrical NACA 4 digits aerofoils. In addition, based on a three-dimensional numerical model, this paper investigates the influence of the blade’s configuration along the spanwise direction on the blade’s power coefficient and the flow characteristics around it. The current results show that the straight blade with a symmetrical aerofoil has the best power efficiency. Also, the thickness of the NACA0018 aerofoil is the most suitable for the operating conditions investigated.

中文翻译：

---

垂直轴风力机叶片最佳配置选择的数值研究

摘要 近年来，为了节约化石资源和保护环境，对风力涡轮机的详细研究越来越受到关注。垂直轴风力涡轮机 (VAWT) 不如水平轴风力涡轮机 (HAWT) 流行，因为它们的效率相对较低。基于CFD方法，本文研究了翼型的最大弯度及其沿弦的位置对VAWT性能的影响。在此过程中，建立了反映设计变量与 VAWT 功率系数之间的函数关系的 Kriging 模型，并通过拉丁超立方采样方法访问该模型的叶片配置的数值样本。基于二维对称NACA 4位数翼型，研究了翼型厚度的影响。此外，本文基于三维数值模型，研究了叶片沿展向方向的构型对叶片功率系数及其周围流动特性的影响。目前的结果表明，具有对称翼型的直叶片具有最佳的功率效率。此外，NACA0018 翼型的厚度最适合所研究的操作条件。目前的结果表明，具有对称翼型的直叶片具有最佳的功率效率。此外，NACA0018 翼型的厚度最适合所研究的操作条件。目前的结果表明，具有对称翼型的直叶片具有最佳的功率效率。此外，NACA0018 翼型的厚度最适合所研究的操作条件。