辅助叶片对垂直轴风力发电机气动特性影响的数值模拟

IF 0.9 Q4 ENGINEERING, MECHANICAL

International Journal of Rotating Machinery Pub Date : 2019-04-21 DOI:10.1155/2019/8098160

Yan Li, Chang Zhao, Chunming Qu, Shouyang Zhao, F. Feng, K. Tagawa

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引用次数: 3

摘要

为了改善直叶片垂直轴风力涡轮机（SB-VAWT）的气动特性，本研究提出了一种在主叶片后面安装辅助叶片的转子结构。为了研究副叶片的相对厚度和固定角度对SB-VAWT气动特性的影响，进行了数值模拟。本工作选用NACA四指系列叶片截面的两种形状NACA0018和NACA0024作为主叶片。详细分析了副叶片的相对厚度和固定角度对SB-VAWT气动性能的影响，将5种相对厚度和3种固定角度组合成13种工况。主叶片和副叶片也被确定为具有五种相对厚度的NACA系列翼型。安装在主叶片后的副叶片固定角度有0°、5°和10°三种。模拟包括在一些典型方位角的动态和静态条件下的输出功率系数、静态扭矩系数以及主叶片和辅助叶片周围的流场。结果表明，具有一定相对厚度和固定角度的辅助叶片可以改善SB-VAWT的输出功率特性和静转矩特性，也可以为提高VAWT的性能提供研究参考。

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Effect of Auxiliary Blade on Aerodynamic Characteristics of Vertical Axis Wind Turbine by Numerical Simulation

In order to improve the aerodynamic characteristics of the Straight-bladed Vertical Axis Wind Turbine (SB-VAWT), a rotor structure with auxiliary blade installed behind the main blade was proposed in this study. To investigate the effects of relative thickness and the fixing angle of the auxiliary blade on aerodynamic characteristics of SB-VAWT, numerical simulations were carried out. Two shapes of NACA 4-digital series blade-section, NACA0018 and NACA0024, were selected as the main blades in this work. Effects of relative thickness and fixing angles of auxiliary blade on the aerodynamic performance of SB-VAWT had been analyzed in detail, which had 5 kinds of relative thickness and 3 kinds of fixing angles combined into 13 working conditions. And the main blades and the auxiliary blades were also decided as the NACA series airfoil with five kinds of relative thickness. Three kinds of fixing angle of auxiliary blade installed behind main blade were used including 0°, 5°, and 10°. The simulations included the output power coefficients, the static torque coefficients, and the flow fields around the main blade and auxiliary blade for both the dynamic and static conditions at some typical azimuth angles. The results show that the auxiliary blade with certain relative thickness and fixing angle can improve the output power characteristics and static torque characteristics of SB-VAWT, which can also provide research reference for improving the performance of VAWT.

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来源期刊

International Journal of Rotating Machinery ENGINEERING, MECHANICAL-

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： This comprehensive journal provides the latest information on rotating machines and machine elements. This technology has become essential to many industrial processes, including gas-, steam-, water-, or wind-driven turbines at power generation systems, and in food processing, automobile and airplane engines, heating, refrigeration, air conditioning, and chemical or petroleum refining. In spite of the importance of rotating machinery and the huge financial resources involved in the industry, only a few publications distribute research and development information on the prime movers. This journal is the first source to combine the technology, as it applies to all of these specialties, previously scattered throughout literature.