集成在建筑上的达里厄型风机气动性能的数值模拟  

Numerical simulation of aerodynamic characteristics of Darrius wind turbine integrated with building

作　　者：王浩鹏[1] 王俊秋[1] 张伟[1] 陈国平[1] 

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010

出　　处：《节能》2016年第10期47-51,共5页Energy Conservation

基　　金：西南科技大学大学生创新基金项目(项目编号:CX16-086)

摘　　要：风能在建筑中的应用已经成为研究的热点。基于计算流体力学方法,采用滑移网格技术和SST k-ω湍流模型,对风力机与建筑一体化二维模型的绕流流场进行了数值模拟,考察了风力机在不同来流速度和转速下的气动性能,分析了来流速度和尖速比对风力机平均转矩系数和平均功率系数的影响,总结了能量利用效率随尖速比变化的规律。研究表明:迎风面的风力机能有效提高平均功率系数,最佳尖速比接近2。Wind energy application in building has become a hot spot of research.Without considering the connecting rod and tip loss,this paper carries on the numerical simulation of two-dimensional model of wind turbine and the building integration of 6 m/s 、9 m/s and 12 m/s respectively in flow velocity,and 1,2,3,4,and 5respectively in tip speed ratio,by using the slide mesh technology and SST k-ω turbulence model.The paper analyzed the impact of different flow velocity and different tip speed ratio on force wind turbine utilization characteristics and energy efficiency.The change of torque and energy efficiency with the tip speed ratio is summarized.The research shows that:When tip speed ratio equals to five,the average power coefficient of wind turbines is minus or close to zero in low flow velocity.However,the average power coefficient of wind turbines is relatively high in higher flow velocity.In low flow velocity,the best working parameter of the wind turbine of No.2 and No.3 is about 2.

关 键 词：高层建筑 滑移网格技术 湍流模型 尖速比 平均功率系数 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]