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首页> 外文期刊>Bulletin of the American Physical Society >APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Large Eddy Simulation of Vertical Axis Wind Turbine wakes; Part I: from the airfoil performance to the very far wake
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APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Large Eddy Simulation of Vertical Axis Wind Turbine wakes; Part I: from the airfoil performance to the very far wake

机译：APS-APS流体动力学分部第70届年会-活动-垂直轴风力涡轮机尾流的大涡模拟;第一部分：从机翼性能到极远的觉醒

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A vortex particle-mesh (VPM) method with immersed lifting lines has been developed and validated.Based on the vorticity–velocity formulation of the Navier–Stokes equations, it combines the advantages of a particle method and of a mesh-based approach. The immersed lifting lines handle the creation of vorticity from the blade elements and its early development. Large-eddy simulation (LES) of vertical axis wind turbine (VAWT) flows is performed. The complex wake development is captured in detail and over up to 15 diameters downstream: from the blades to the near-wake coherent vortices and then through the transitional ones to the fully developed turbulent far wake (beyond 10 rotor diameters). The statistics and topology of the mean flow are studied with respect to the VAWT geometry and its operating point. The computational sizes also allow insights into the detailed unsteady vortex dynamics and topological flow features, such as a recirculation region influenced by the tip speed ratio and the rotor geometry.
机译：已经开发并验证了具有沉入式提升线的涡旋颗粒-网格（VPM）方法。基于Navier-Stokes方程的涡度-速度公式，它结合了颗粒方法和基于网格的方法的优点。浸入式提升线处理叶片元件产生的涡旋及其早期发展。进行了垂直轴风力发电机（VAWT）流动的大涡模拟（LES）。详细捕获了复杂的尾流，并从下游获取了多达15个直径：从叶片到近尾相干涡，然后通过过渡涡流到完全发展的湍流远尾涡（超过10个转子直径）。针对VAWT几何形状及其工作点，研究了平均流量的统计数据和拓扑。计算大小还可以洞悉详细的非定常涡旋动力学和拓扑流动特征，例如受叶尖速比和转子几何形状影响的再循环区域。

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