浓缩风能型风力发电机浓缩装置的流动分析与评价  

Flow analysis and evaluation on concentration device of concentrated wind energy turbine

作　　者：马广兴[1,2] 田德[1,3] 韩巧丽[1] 

机构地区：[1]内蒙古农业大学机电工程学院,呼和浩特市010018 [2]内蒙古工业大学土木工程学院,呼和浩特市010051 [3]华北电力大学可再生能源学院,北京市102206

出　　处：《中国农机化学报》2013年第5期73-78,共6页Journal of Chinese Agricultural Mechanization

基　　金：国家自然科学基金资助项目(59776033)--浓缩风能型风力发电机叶轮系列化的风洞实验与研究

摘　　要：为研究浓缩风能型风力发电机浓缩装置的流动规律,以浓缩装置为研究对象,进行了数值模拟和实验研究与实验数据统计分析。表明数值计算结果与实验结果相符;流体流过浓缩装置,近壁面流体首先被加速,在-0.22m截面超过中心轴流速,之后随流动发展,逐渐形成边缘流速小于中间流速的流场;当来流风速10.74m/s时,中央圆筒中间截面以中心轴为圆心径向流速梯度达2.35/s;在距中央圆筒壁面50mm附近流体形成薄薄的边界层;统计分析表明实验数据在总体上稳定性小于15%,均值标准差小于0.35,方差小于0.15,95%置信区间宽度小于0.06m/s,满足工程实际设计要求。该文为浓缩装置设计提供依据。In order to reveal the flow law of wind energy concentrating device, the numerical simulation, experimental study and statistical analysis of experimental data on the concentration device of concentrated wind energy turbine were carried out. The results showed that there was a good agreement in the numerical calculation and experiment. The fluid closing to the wall was firstly accelerated when flowing through the concentrating device. The velocity was greater than the central velocity at -0,22m before the intermediate section, and then, the marginal velocity was gradually less than the central velocity. The central cylindrical department bad the radial velocity gradient centered in the intermediate axis. The radial velocity gradient in the intermediate section was 2.35 m/s when the flow was 10.74m/s; There was a thin boundary layer near the central cylinder wall about 50mm. Statistical analysis showed that the stability was less than 15%, the mean standard deviation was less than 0.35, Variance was less than 0.15, 95% confidence interval width was less than 0.06m/s on the overall. Engineering design requirements were met. This paper provides reference for improving the design of concentrating device.

关 键 词：浓缩风能型 风力发电 浓缩装置 流动分析 评价 

分 类 号：F11[经济管理—国际贸易]