- 摘 要
-
何連華，陳凱，符龍彪，錢基宏，湯榮偉
（中國建筑科學研究院，北京100013）[摘要] 基于Fluent6.1軟件，將Realizable к-ε 湍流模型與非平衡壁面函數(shù)搭配使用，對武漢火車站站房屋蓋、雨棚的平均風荷載進行了計算流體力學數(shù)值模擬。將數(shù)值模擬與風洞試驗的結果進行了對比分析，結果具有很好的一致性。應用多孔介質階躍模型模擬雨棚下表面的穿孔管吊頂，彌補了風洞試驗模擬此類結構時測壓點布置的局限。
[關鍵詞] 數(shù)值模擬；平均風荷載；多孔介質階躍模型
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
