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储煤仓由于栈桥功能要求而带有洞口,研究开洞口的煤仓风压分布规律和煤仓之间风致干扰效应更接近实际工况,现行规范中没有明确煤仓栈桥洞口尺寸设计的要求,基于此,运用FLUENT软件和计算流体力学(CFD)技术,在采用SSTκ-ω湍流模型的基础上,对开洞煤仓风荷载分布规律进行了数值风洞计算研究。分析了单仓不同栈桥洞口尺寸下门洞周围风压分布规律;对比开洞口单双仓在不同风攻角下的风致干扰效应;改变双仓栈桥洞口相对位置时受扰仓的风压分布规律。结果表明:此类开洞口煤仓的最优栈桥洞口尺寸为4m×4m,为以后的开洞口煤仓设计提供依据;两煤仓风致干扰效应显著,前后煤仓的遮挡效应非常明显;双仓栈桥洞口最不利位置为10°,在今后的双仓设计选型中应尽量避免此种位置关系。
Because of the requirements of the trestle bridge, the storage coal bunker has a hole. The study on the wind pressure distribution of coal bunker and the wind-induced interference effect between coal bunkers are closer to the actual working conditions. There is no clear requirement for the size design of the coal bunker bridge openings in current codes, Based on this, numerical wind tunnel calculation and study of the wind load distribution of open coal bunker is carried out by using FLUENT software and computational fluid dynamics (CFD) technology based on SSTκ-ω turbulence model. The wind pressure distribution around the doorway under single-warehouse trestle hole size is analyzed. The wind-induced interference effect of single- and double-warehouse positions at different wind-attack angles is compared. The wind pressure distribution of the disturbed warehouse when changing the relative position of the double-warehouse trestle hole is analyzed. The results show that the size of the optimal trestle opening of coal bunker is 4m × 4m, which provides the basis for the future coal bunker design. The wind-induced interference effect of the two coal bunkers is obvious, and the shielding effect of coal bunker is obvious. The most unfavorable position of the trestle hole is 10 °. In the future double-deck design and selection, such position relation should be avoided as much as possible.