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该文采用基于S-A的DES方法对雷诺数为104且不同间距比下并列双圆柱的湍流模型进行了三维数值模拟,取间距比T/D为1.1、1.5、2.0、3.0和4.0(T为两圆柱中心之间的距离,D为圆柱直径)。数值模拟研究了流场形态,升阻力系数及升力频谱,发现了不同间距比下的各种紊流形态及流体动力情况,它们与实验结果一致且显示了明显的三维特性,同时这也验证了DES方法在高雷诺数柱群数值模拟方面的准确性。
In this paper, SA-based DES method is used to simulate the turbulence model with a Reynolds number of 104 and parallel double cylinders with different pitch ratios. The T / D ratio is 1.1, 1.5, 2.0, 3.0 and 4.0 The distance between the center of the cylinder, D is the diameter of the cylinder). Numerical simulations of flow field, lift resistance coefficient and lift spectrum were carried out. Various turbulent flow regimes and hydrodynamic conditions at different pitch ratios were found. They were consistent with the experimental results and showed obvious three-dimensional characteristics. This also verified that Accuracy of DES Method in Numerical Simulation of High Reynolds Number Columns.