何连华，陈凯，符龙彪，钱基宏，汤荣伟
（中国建筑科学研究院，北京100013）

[摘要]  基于Fluent6.1软件，将Realizable к-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。
[关键词]  数值模拟；平均风荷载；多孔介质阶跃模型

    Numerical simulation of mean wind pressure on roof and canopy of Wuhan railvay station
    He Lianhua ,Chen Kai ,Fu Longbiao ,Qian Jihong ,Tang Rongwei
    (China Academy of Building Research, Beijing 100013, China)

Abstract: Based on Fluent6.1 soft platform with the realizable turbulence closure model and non-equilibrium Wall Functions, mean wind pressure of the roof and canopy of Wuhan railway station were simulated by computational fluid dynamics method. Conparison of the results between the computation and the wind tunnel test was performed, and the result indicated that the computation result coincided well with the wind tunnel test. Porous jump conditions were used to model perforated tube ceiling of the canopy. This method played the role of the supplement to the wind tunnel test, which had difficulty to dispose pressure taps on the surface of such material.
Keywords:  numerical  simulation; mean wind pressure; porous jump conditions