颜卫亨, 邰家醉, 张茂功. 野营折叠网壳结构表面定常风场的数值模拟研究[J]. 工程力学, 2012, 29(4): 224-230.
引用本文: 颜卫亨, 邰家醉, 张茂功. 野营折叠网壳结构表面定常风场的数值模拟研究[J]. 工程力学, 2012, 29(4): 224-230.
YAN Wei-heng, TAI Jia-zui, ZHANG Mao-gong. NUMERICAL SIMULATION OF STEADY ATMOSPHERIC FLOW FOR FOLDING RETICULATED SHELL[J]. Engineering Mechanics, 2012, 29(4): 224-230.
Citation: YAN Wei-heng, TAI Jia-zui, ZHANG Mao-gong. NUMERICAL SIMULATION OF STEADY ATMOSPHERIC FLOW FOR FOLDING RETICULATED SHELL[J]. Engineering Mechanics, 2012, 29(4): 224-230.

野营折叠网壳结构表面定常风场的数值模拟研究

NUMERICAL SIMULATION OF STEADY ATMOSPHERIC FLOW FOR FOLDING RETICULATED SHELL

  • 摘要: 基于流体动力学基本原理和大气边界层基本理论,运用计算流体动力学软件Fluent6.3对野营折叠网壳结构表面风压分布进行数值模拟技术的基础性研究,对比与风洞试验数据,确定复杂体型结构数值模拟时的计算域尺寸、网格划分方式、网格数量、湍流模型等基本参数设定,得到野营折叠网壳在不同风向角下的表面风压分布及其结构体形系数,同风洞试验结果对比,吻和较好。分析表明风速对结构风荷载体形系数影响较小,而风向角对风荷载体形系数的影响较大;所得结构的体形系数,为类似体型结构的抗风设计提供依据。

     

    Abstract: Numerical investigations of folding camping shell structure under steady wind fields have been conducted in this paper using the computational fluid dynamics code Fluent 6.3. The computational domain, the mesh size and turbulent flow model used in the numerical simulation were determined according to the wind tunnel test data. The surface pressure distribution of folding camping shell under different wind directions was obtained. The shape coefficient for the folding reticulated shell was calculated and compared with that obtained from the wind tunnel test, showing good agreement. It can be found from the results that the wind directions have significant influences on the wind load shape coefficient while the wind speed have little effect. The shape coefficient obtained in this study can provide reference for the design of this kind of structure.

     

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