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基于Fluent6.1软件,将Realizable κ-ε湍流模型与非平衡壁面函数搭配使用,对武汉火车站站房屋盖、雨棚的平均风荷载进行了计算流体力学数值模拟。将数值模拟与风洞试验的结果进行了对比分析,结果具有很好的一致性。应用多孔介质阶跃模型模拟雨棚下表面的穿孔管吊顶,弥补了风洞试验模拟此类结构时测压点布置的局限。
Based on the Fluent6.1 software, the realizable κ-ε turbulence model is used in combination with the unbalanced wall function to simulate the average wind load of the roof and canopy of Wuhan railway station by computational fluid dynamics. The results of numerical simulation and wind tunnel test are compared and analyzed, and the results are in good agreement. The porous media step model is used to simulate the perforated pipe ceiling on the lower surface of the canopy to make up for the limitations of the pressure measurement point arrangement when the wind tunnel test simulates such a structure.