开洞口煤仓风致干扰效应的CFD模拟
发布时间：2019-01-28 08:04
【摘要】：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彘-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。
[Abstract]:The coal storage bunker has a hole because of the functional requirements of the trestle bridge. The distribution of the wind pressure and the wind-induced interference effect between the coal bunkers are more closely related to the actual working conditions. Based on this, there is no clear requirement for the size design of the coal bunker bridge opening in the current code. Based on the SST 魏-蠅 turbulence model and FLUENT software and computational fluid dynamics (CFD) technique, the wind load distribution of coal bunkers with open holes is studied by numerical wind tunnel calculation. The distribution law of wind pressure around the portal under the different entrance dimensions of single storehouse is analyzed, the wind-induced interference effect of single and double warehouse at different wind attack angle is compared, and the wind pressure distribution law of disturbed bunker is changed when the relative position of tunnel entrance of double-storehouse trestle bridge is changed. The results show that the optimal hole size of this kind of opening coal bunker is 4 m 脳 4 m, which provides the basis for the design of the coal bunker in the future, the wind-induced interference effect of the two coal bunkers is obvious, and the shielding effect of the former and the back bunkers is very obvious. The most unfavorable position at the entrance of double warehouse trestle bridge is 10 掳, which should be avoided in the design and selection of double warehouse in the future.
【作者单位】： 辽宁工程技术大学力学与工程学院;
【分类号】：TU312.1
，
本文编号：2416869
[Abstract]:The coal storage bunker has a hole because of the functional requirements of the trestle bridge. The distribution of the wind pressure and the wind-induced interference effect between the coal bunkers are more closely related to the actual working conditions. Based on this, there is no clear requirement for the size design of the coal bunker bridge opening in the current code. Based on the SST 魏-蠅 turbulence model and FLUENT software and computational fluid dynamics (CFD) technique, the wind load distribution of coal bunkers with open holes is studied by numerical wind tunnel calculation. The distribution law of wind pressure around the portal under the different entrance dimensions of single storehouse is analyzed, the wind-induced interference effect of single and double warehouse at different wind attack angle is compared, and the wind pressure distribution law of disturbed bunker is changed when the relative position of tunnel entrance of double-storehouse trestle bridge is changed. The results show that the optimal hole size of this kind of opening coal bunker is 4 m 脳 4 m, which provides the basis for the design of the coal bunker in the future, the wind-induced interference effect of the two coal bunkers is obvious, and the shielding effect of the former and the back bunkers is very obvious. The most unfavorable position at the entrance of double warehouse trestle bridge is 10 掳, which should be avoided in the design and selection of double warehouse in the future.
【作者单位】： 辽宁工程技术大学力学与工程学院;
【分类号】：TU312.1
，
本文编号：2416869
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