摘要
试验和数值模拟证明,在风力机叶片的叶尖添加小翼,可以提高风能转化效率。为了清楚地了解小翼对风力机动力放大的影响,文章基于叶轮周围流场的数值模拟结果,分析了加V型小翼和不加小翼的风力机流场-速度场和压力场特性。可以看出,小翼对风力机叶片叶端的影响较大,风力机叶尖的漩涡强度降低,能量转换效率提高。
It was proved that a tip vane could improve the wind turbine＇s efficiency by the test and the numerical simulation.In order to distinctly understand the power augmentation effect of the wind turbine by the tip vane,this paper analyzed the flow field of the wind turbine with the V type tip vane and without a tip vane,as well as the characteristics of the velocity field and the pressure field,which based on the numerical simulation result of the flow field of the wind turbine.The tip vane has more influence to the blade tip of the wind turbine.The vortex intensity around the blade tip was reduced and the energy transformation efficiency was improved.
出处
《可再生能源》
CAS
北大核心
2011年第1期98-102,共5页
Renewable Energy Resources
基金
内蒙古自然基金重大项目(20080404ZD07)
内蒙古科技厅攻关项目(Z2007-1-01021)
内蒙古科技大学创新基金(2009NC056)
关键词
风力机
叶尖小翼
功率特性
压力场
速度场
数值模拟
wind turbine
tip vane
power characteristic
pressure field
velocity field
numerical simulation
