导流型垂直轴风力机内部流场计算方法的比较与研究  

Comparison and Study of the Methods for Calculating the Flow Fields inside a Flow-guided Type Vertical Shaft Wind Turbine

作　　者：王鑫[1] 童正明[1] 王企鲲[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《热能动力工程》2010年第4期455-458,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：基于CFD模拟计算,分别用多参考坐标系法(Multiple Reference Frame,MRF)和滑移网格法(Sliding Mesh,SM)对导流型垂直轴风力机进行数值模拟,给出每种方法在工程应用中所适用的范围与场合。在对该种风力机整体外特性的计算上,两种方法对其总扭矩等性能有着相似的结论,周期较短的MRF法更为适合;在局部流动内特性上,SM法作为一种非定常的计算方法,能相对准确的表达出风轮的内特性参数随时间及空间的变化,对于此方面的计算,物理意义较合理的SM法更为适合。On the basis of CFD(computational fluid dynamics)simulation calculations,a multiple reference coordinate system method and a sliding mesh method were used respectively to conduct the numerical simulation of a flow-guided type vertical shaft wind turbine.The scope and occasions of each method suitable for engineering applications were also given.In terms of calculation of the overall external characteristics of this type wind turbine,both calculation methods can arrive at similar conclusions regarding such performances as total torque and others.The multiple reference coordinate system method with a relatively short period is regarded as more suitable.As regards the inner characteristics of local flows,the sliding mesh method,as a nonstationary flow calculation method,can relatively accurately express the change of inner characteristics parameters,depending on time and space.For the calculations in this regard,the sliding mesh method,which is comparatively reasonable in physical meaning,is more applicable.

关 键 词：风轮 导风轮 数值模拟 多参考坐标系 滑移网格 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] O357.4[理学—流体力学]