垂直轴风力机二维非定常流场数值模拟  

Numerical simulation for 2D unsteady flow around the vertical axis wind turbine

作　　者：阳志钦[1] 崔文篆[1] 

机构地区：[1]湘潭大学机械工程学院,湘潭411105

出　　处：《现代制造工程》2009年第8期56-58,77,共4页Modern Manufacturing Engineering

摘　　要：应用FLUENT软件求解二维非定常不可压N-S方程和SSTk-ω湍流模型,采用PISO速度压力修正算法,结合滑动网格技术,模拟垂直轴风力机(VAWT)的流场特性。获得并分析了不同时刻的速度场、压力场分布,风轮叶片受力和转矩的变化规律。结果表明绕流场模拟能有效地反应风力机旋转过程的流场状况,可为垂直轴风力机的工程设计提供理论依据。Numerical simulations of the fluid flow around a small rotating vertical axis wind turbine are performed using a 2D unsteady incompressible N-S equation and the SST k-ω is used for modelling turbulence modelling, the PISO algorithm is adopted for the solution of the pressure-velocity coupled equation, and the moving mesh technique is adopted for the numerical simulation for solving the rotating flow. Contours of velocity magnitude and pressure, the blade force, and the torque is obtained and analyzed. Conclusion of the numerical simulation give the essence of the rotated flow of vertical axis wind turbine, and can provide the theory reference for engineering design.

关 键 词：雷诺时均方程 垂直轴风力机 滑动网格 SST k-ω湍流模型 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]