不同截面尺寸双柱体静力干扰效应的数值模拟  

Numerical Simulation of Mean Interference Effects for Two Prisms with Different Breadths

作　　者：郑朝荣[1] 张耀春[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：《武汉理工大学学报》2007年第8期87-91,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(59895410)

摘　　要：基于计算流体动力学软件Fluent,采用雷诺应力方程模型(RSM)研究了不同截面尺寸两方柱间的静力干扰效应,数值模拟结果与相应风洞试验吻合较好。分析了建筑物的相对位置、施扰建筑的不同截面尺寸对静力干扰效应的影响,并研究了串列布置时受扰建筑平均风压系数干扰因子IFCP的空间分布情况。结果表明:串列布置时,施扰建筑的截面尺寸变化对受扰建筑的IFm产生显著的影响。截面越宽,"遮挡效应"越严重,IFm随施扰建筑截面尺寸的增大大致呈线性递减的规律。Mean wind-induced interference effects between two square prisms with different breadths were numerical simulated by the CFD software——Fluent.The Reynolds Stress equation Model（RSM） has been used in the numerical simulation.The results were in good agreement with corresponding wind tunnel test data.The influences of relative arrangement of two prisms and breadth of the interfering buildings upon the mean interference effects were analyzed,and also the space distributions of the IFCP on the principal building under tandem arrangement were studied at the last.The results indicated that different breadth of the interfering buildings can bring significant effects on the mean interference effects under tandem arrangement,the shielding effects could be more serious under wider interfering building,and IFm could show almost linear degression with the increment of the breadth.

关 键 词：高层建筑 数值模拟 静力干扰效应 流场分析 

分 类 号：TU973.213[建筑科学—结构工程]