排灌机械工程学报2018，Vol.36Issue(2)：146-153,8.DOI:10.3969/j.issn.1674-8530.17.3002
考虑小攻角影响立轴风轮气动性能改善方法
Enhancement approaches of aerodynamic performance of lift-type vertical axis wind turbine considering small angle of attack
摘要
Abstract
The azimuth angles of 0° and 180° are zero and the torques of both azimuth angles of vertical wind turbine are negative during the blade rotating in a circle with angle of attack in the conversion of positive and negative as well,thus reducing the average torque of the blade and the overall performance of the lift-type vertical axis wind turbine.This paper summarized the research status of performance improvement of the lift-type vertical axis wind turbine nowadays,pointed out that the current research was mainly aimed at improving the high-performance area of the big angle of attack in the impeller overall body,blade structure and flow field situation instead of reducing the impact of small angle of attack area.In order to solve this problem,two methods of improving the aerodynamic performance of vertical axis wind turbine considering the effect of small angle of attack were proposed including the interference airflow method and the new variable-pitch strategy.The former mainly eliminated the 0 °and 180 ° azimuth angles of the zero angle and the negative moment,the latter reduced the influence of the special azimuth angle by changing the range of the high performance area and produced a new performance point.Double disk multi-flow tube model was established based on the blade momentum theory.It was applied to the NACA0012 airfoil,the two-blade Φ type and the H-type vertical wind turbine with the rotate diameter of 2 m,and the corresponding programming was calculated by Matlab programming language section.The results show that these two methods greatly reduce the negative torque range and the overall effect is improved significantly,and the up disk is better than the down disk.关键词
升力型立轴风轮/极小攻角/气动性能/干扰气流/变桨技术Key words
lift-type vertical axis wind turbine/minimal angle of attack/aerodynamic performance/interference airflow/variable-pitch technology分类
农业科技引用本文复制引用
赵振宙,钱思悦,郑源,汪瑞欣,曾冠毓..考虑小攻角影响立轴风轮气动性能改善方法[J].排灌机械工程学报,2018,36(2):146-153,8.基金项目
国家自然科学基金资助项目(11502070) （11502070）
江苏省基础研究计划(自然科学基金)资助项目(SBK201340780) （自然科学基金）
国家重点基础研究发展计划项目(973计划)(2014CB046200) （973计划）
