近日，扬州大学的孙振业及其研究团队取得一项新进展。经过不懈努力，他们在垂直轴风力发电机的复杂涡流中确定攻角与动态失速回路。相关研究成果已于2024年11月12日在国际知名学术期刊《理论与应用力学快报》上发表。

为了优化垂直轴风力发电机（VAWT）的设计，必须正确处理攻角（AOA）和翼型数据。本文提出了一种基于计算流体动力学（CFD）分析来确定VAWT攻角的方法。首先，对配备NACA 0012翼型的双叶片VAWT进行CFD分析，并通过实验验证了推力系数和功率系数。

其次，收集监测点处的叶片受力和速度数据。通过消除监测点的叶片自感，确定不同方位角下的攻角。然后，提取攻角对应的升力系数和阻力系数。结果表明，该方法不依赖于特定距离叶片的监测点选择，并且提取的动态失速迟滞，比未考虑束缚涡旋自感的“常规”方法更为精确。

附：英文原文

Title: Determination of angle of attack and dynamic stall loop in the complex vortical flow of a vertical axis wind turbine

Author: Wenzhong Shen, Tao Xie, Lingpeng Ge, Jiamin Yin, Zhenye Sun

Issue&Volume: 2024-11-12

Abstract: To improve the vertical axis wind turbine (VAWT) design, the angle of attack (AOA) and airfoil data must be treated correctly. The present paper develops a method for determining AOA on a VAWT based on computational fluid dynamics (CFD) analysis. First, a CFD analysis of a two-bladed VAWT equipped with a NACA 0012 airfoil is conducted. The thrust and power coefficients are validated through experiments. Second, the blade force and velocity data at monitoring points are collected. The AOA at different azimuth angles is determined by removing the blade self-induction at the monitoring point. Then, the lift and drag coefficients as a function of AOA are extracted. Results show that this method is independent of the monitoring points selection located at certain distance to the blades and the extracted dynamic stall hysteresis is more precise than the one with the “usual” method without considering the self-induction from bound vortices.

DOI: 10.1016/j.taml.2024.100560

Source: https://www.sciencedirect.com/science/article/pii/S2095034924000710