大型煤仓球壳的风致干扰效应研究

PDF(2002 KB)

振动与冲击 ›› 2010, Vol. 29 ›› Issue (3) : 39-42.

论文

大型煤仓球壳的风致干扰效应研究

孙晓颖; 吴迪; 武岳; 沈世钊

作者信息 +

The wind-induced interference effects to the long-span spherical shell for coal storage

SUN Xiao-ying; WU Di; WU Yue; SHEN Shi-zhao

Author information +

文章历史 +

摘要

本文针对两座连续排列的大型煤仓球壳的风致干扰效应进行了风洞试验研究，并基于Reynolds时均方程和RSM模型对其进行了CFD数值模拟。将数值模拟结果与风洞试验结果进行了对比分析，两者吻合较好，在此基础上探讨了煤仓球壳之间的风致静力及动力干扰效应，结果表明：静力干扰效应主要表现为阻碍效应，其结果是降低了来流动能，提高了来流湍流度；动力干扰主要表现在增大效应，当受扰建筑处于施扰建筑的下游时，动力干扰效应较大。

Abstract

In this paper, wind tunnel tests on two paratactic rigid models of long-span spherical shell for coal storage are carried out to study the wind-induced interference effects. At the same time, based on the Reynolds-averaged N-S equations and Reynolds stress equation model (RSM), the numerical simulation of mean wind pressure distribution is performed. The numerical results are found to have good agreement with the experimental results. On this basis, the wind-induced static force and dynamic interference effects between the two spherical shells are discussed. The results show that the main static interference effect is obstruction, it reduces the flow energy, and improves the flow turbulence; the main dynamic interference effect is increased effect，when the shell is on the downstream of the interfering building, the dynamic interference effect is bigger.

导出引用

孙晓颖;吴迪;武岳;沈世钊. 大型煤仓球壳的风致干扰效应研究[J]. 振动与冲击, 2010, 29(3): 39-42

SUN Xiao-ying;WU Di;WU Yue;SHEN Shi-zhao. The wind-induced interference effects to the long-span spherical shell for coal storage[J]. Journal of Vibration and Shock, 2010, 29(3): 39-42