摘要
分析了传统垂直轴风力机效率低的原因,并数值研究了带有导叶的导流型垂直轴风力机的气动性能.研究结果表明,导叶不仅可以有效地降低因来流对动叶轮吸力面的直接冲击而造成的阻力扭矩,而且还有助于改善来流对动叶轮压力面的有效冲击,这些均使该风力机动叶轮的旋转扭矩得到显著增加.因此,导流型垂直轴风力机可以有效克服传统垂直轴风力机性能上的缺陷,有望提高其风能利用效率.
The reason of why the vertical axis wind turbine（VAWT） is always with low efficiency was analysed and moreover a new type of VAWT with guiding impeller was proposed.The computational fluid dynamics technique was introduced to investigate its aerodynamic performance.The results indicate that the guiding impeller can not only keep the rotor away from the direct impact of coming flow on its suction section,resulting in drag torque,but also improve the effective impact of coming flow on the pressure section of the rotor,both of which contribute to the enhancement of driving torque.So this type of VAWT can smooth away the defects of traditional VAWT and hopefully improve its efficiency.
出处
《上海理工大学学报》
CAS
北大核心
2010年第5期423-426,432,共5页
Journal of University of Shanghai For Science and Technology
关键词
垂直轴风力机
导流叶片
气动性能
数值研究
vertical axis wind turbine
guiding impeller
aerodynamic performance
numerical investigation
