大型煤仓球壳的风致干扰效应研究  

Wind-induced interference effects on long-span spherical shell for coal storage

作　　者：孙晓颖[1] 吴迪[1] 武岳[1] 沈世钊[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《振动与冲击》2010年第3期39-42,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金重大研究计划重点项目(90815021);国家自然科学基金面上项目(50908068);国家自然科学基金面上项目(50708030);"十一五"国家科技支撑项目(2006BAJ03B04);中国博士后特殊基金(200902407);中国博士后基金面上资助(20070420881);教育部博士点新教师基金(20092302120028);哈工大优秀青年教师(HITQNJS.2009.042)

摘　　要：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N-S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。Wind tunnel tests on two paraactic rigid models of long-span spherical shell for coal storage were carried out to study the wind-induced interference effects.Based on the Reynolds-averaged N-S equations and Reynolds stress equation model (RSM),the numerical simulation of mean wind pressure distribution was performed.The numerical results are found to be in good agreement with the experimental results.On this basis,the wind-induced static force and dynamic interference effects between the two spherical shells were discussed.The results show that the main static interference effect is the obstruction,which reduces the flow energy and improves the flow turbulence.The main dynamic interference effect is the increasing effect,and when the shell is on the downstream side of the interfering building,the dynamic interference effect is bigger.

关 键 词：球壳 风洞试验 CFD数值模拟 干扰效应 

分 类 号：TU312.1[建筑科学—结构工程]