摘要
双层幕墙因为更好的绿色、环保性能,应用越来越广泛,但目前规范鲜有设计双幕墙风荷载取值。为研究L型廊道双层幕墙风荷载情况,文中基于FLUENT计算流体力学软件,分别采用雷诺时均模拟(RANS)和大涡模拟(LES)进行模拟,并与风洞试验结果对比,结果表明LES模拟要明显优与RANS模拟。对于迎风面的廊道内压系数平均值,大涡模拟预测结果较好,误差在5%以内,侧风面误差在15%以内。廊道内脉动风压系数,大涡模拟可以反应整体趋势,外幕墙净风压的预测,大涡模拟(LES)无论是风压平均值还是脉动值均有良好的效果。
Due to better green and environmental protection performance,double skin facade are more and more widely used,however,there are few design wind load values for double skin facade in related codes.Reynolds uni⁃form simulation(RANS)and large eddy simulation(LES)from FLUENT software are used to study the wind load of the double skin facade of the L-shaped corridor.The results show that the LES simulation is significantly better than the RANS simulation.For the average value of the internal pressure coefficient of the corridor on the windward sur⁃face,the error of the prediction results of large eddy simulation is within 5%,and for crosswinds,the error is within 15%.For the pulsating wind pressure coefficient in the corridor,the large eddy simulation can reflect the overall trend.For the prediction of the net wind pressure of the exterior curtain wall,the large eddy simulation(LES)has a good prediction effectiveness on both the average wind pressure and the pulsation value.
作者
何鑫
徐海巍
HE Xin;XU Haiwei(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)
出处
《低温建筑技术》
2023年第7期77-81,共5页
Low Temperature Architecture Technology
基金
国家自然基金项目“双层幕墙脉动风荷载的理论及试验模拟方法研究”(51508502)。
