摘要
基于多流管、双向多流管理论模型,利用MATLAB编程计算垂直轴风力机的功率系数并与实验值进行对比.研究表明:双向多流管理论模型更适合于垂直轴风力机的设计.以此为基础研究尖速比和实度对直叶片垂直轴风力机功率系数的影响,计算显示:尖速比增加,功率系数先增大后减小,近似成抛物线变化;实度增加,功率系数(效率)先增大后减小,最高效率位置向低尖速比区漂移,高效区范围变小.
The power coefficient of a straight-bladed vertical-axis wind turbine（VAWT） was calculated based on multiple stream tube model and two-way multiple stream tube model by means of MATLAB software and the result was compared with the experimental data. The investigation showed that the two-way multiple stream tube model was more suitable in design of a VAWT. Effects of tip speed ratio and solidity on power coefficient of a straight-bladed VAWT were also discussed on the basis of the former. The computational result indicated that power coefficient curve exhibited approximate parabolic form with its maximum in the middle of the range of tip speed ratio and solidity, and the maximum efficiency point moved towards low tip speed ratio range and the high efficiency range narrowed with the increase of solidity.
出处
《兰州理工大学学报》
CAS
北大核心
2009年第5期47-50,共4页
Journal of Lanzhou University of Technology
基金
甘肃省省长专项(Z06200601)
关键词
直叶片
双向多流管模型
功率系数
垂直轴风力机
straight-bladed
double multiple stream tubes model
power efficiency
VAWT
