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由于风力机叶片附近的流场都处在一个不均匀的流场中,所以风力机叶片在进行气动模拟过程中,需要对叶片周围的流场状态建立湍流模型。湍流模型是在脉动运动方程和雷诺平均运动方程上来建立的封闭的方程组,我们用这个方程组来描述流场的一个状态。本文应用了标准的SSTk-w湍流模型来模拟叶片的外部流场。这个模型有两大特点,分别是良好的收敛性和稳定性,这两个模型现在分别是工程流场分析中的重要工具,
Because the flow field near the blades of the wind turbine is in a non-uniform flow field, during the aerodynamic simulation of the wind turbine blade, a turbulence model needs to be established for the flow field state around the blade. The turbulence model is a closed system of equations built on the pulsating and Reynolds-averaged equations of motion. We use this system to describe a state of the flow field. In this paper, a standard SSTk-w turbulence model is applied to simulate the external flow field of the blade. This model has two major characteristics, namely, good convergence and stability, respectively. These two models are respectively important tools in engineering flow field analysis,