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采用雷诺方程与k-ε模型对单圆柱绕流进行了紊流数值模拟,分析了圆柱的风动力系数及圆柱周围的流场。圆柱的风力系数呈现高频变化并具有较明显的周期变化,圆柱的存在影响了流场,且在圆柱后存在着回流。
The turbulence numerical simulation of the single cylinder flow was carried out by using the Reynolds equation and the k-ε model. The wind dynamic coefficient of the cylinder and the flow field around the cylinder were analyzed. The wind force coefficient of the cylinder presents high frequency variation and has obvious periodic changes. The existence of the cylinder affects the flow field, and there is a backflow after the cylinder.