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基于流固耦合的膜结构风压系数

Keywords: 膜结构,计算流体动力学,风压系数,流固耦合

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Abstract:

为了研究流固耦合对膜结构风压系数的影响规律,利用计算流体动力学(CFD)软件,计算了不同水平风向角双坡屋面的风压系数,并与风洞试验数据进行了比较,进而在考虑流固耦合作用下,研究了膜结构风压系数.结果表明:CFD软件可以预测双坡屋面的风压系数;考虑流固耦合作用后,膜表面风压系数的分布和大小发生变化;膜的初始预应力对风压系数也有影响;随风速增加,膜结构变形模式也发生变化.

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