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| Study on aerodynamic characteristics of straight-bladed vertical axis wind turbine with guide vane |
| SU Zhenluan1, LI Yan1,2*, TONG Guoqiang1, FENG Fang2,3 |
| 1. College of Engineering, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; 2. Heilongjiang Provincial Key Laboratory of Renewable Resources Utilization Technology and Equipment in Cold Regions, Northeast Agricultural University, Harbin, Heilongjiang 150030, China; 3. College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, China |
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Abstract In order to improve the aerodynamic characteristics of the straight-bladed vertical axis wind turbine, a plate type guide vane was installed outside the wind turbine to change the direction of the incoming flow, and improve the flow around the blade and enhanced the aerodynamic characteristics of the wind turbine. A four-bladed small-scale straight bladed vertical axis wind turbine with NACA0018 airfoil was used as the object to study the width, angle and distance from the wind turbine by using a quadratic orthogonal rotational design method with six flat plate type guide vanes uniformly installed on the outside of the wind turbine. Taking the average static torque coefficient as the target, a set of optimal guide vane structure parameters is obtained by numerical simulation study and the static flow field is analyzed. Based on the optimal guide vane structure parameters obtained from the numerical simulation, a model of the guide vane and wind turbine was fabricated and wind tunnel tests were conducted. The results show that the installation of the guide vane could effectively improves the starting perfor-mance and aerodynamic performance of the straight-bladed vertical axis wind turbine. When the wind speed was 10 m/s, the maximum static torque coefficient and power coefficient of the wind turbine increased by 35.6 and 39.5 percent, respectively, when compared to the wind turbine without a guide vane. This study can provide a useful reference for research on the use of guide vanes to enhance the performance of wind turbines.
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Received: 01 March 2021
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