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致动模型是一种较新的CFD计算模型,通过在N-S方程添加源项的形式模拟叶片对流场的作用,减少了网格数量和计算时间。本文结合面元法在致动模型上提出一种改进致动面模型,并在OpenFoam平台对改进致动面模型进行尾流预测,数值研究了NREL Phase VI水平轴风力机在均匀来流中的流场特性,对垂直和错排两种排布方式下的多风机尾流流场特性作出分析,如涡结构、速度亏损、尾迹干涉等,为深入研究风力机尾流以及风场开发提供了一定的依据。
Actuation model is a newer CFD calculation model. By adding the source term to the N-S equation to simulate the action of the blade on the flow field, the number of grids and the calculation time are reduced. In this paper, an improved actuation surface model is proposed on the actuation model by the surface element method, and the wake prediction of the improved actuation surface model is performed on the OpenFoam platform. The numerical simulation of the NREL Phase VI horizontal axis wind turbine in a uniform flow The vertical and misordered exhaust flow characteristics of the multi-fan wake are analyzed, such as the vortex structure, the speed loss, the wake interference and so on, which provide the basis for further research on the wind turbine wake flow and wind farm development A certain basis.