体育中心馆风压分布的数值模拟  

Numerical simulation of wind pressure distribution on a gymnasium

作　　者：卫军[1] 黄滢[1,2] 

机构地区：[1]华中科技大学土木工程与力学学院 [2]江西科技师范学院土木工程系,江西南昌330013

出　　处：《华中科技大学学报（自然科学版）》2006年第7期100-103,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：利用计算流体动力学分析软件FLUENT6.2,采用RNGk-ε湍流模型对某体育中心馆建筑物表面平均风压进行了数值模拟,并阐述了数值模拟时涉及的计算流域确定、网格划分、边界条件选取、求解参数和收敛标准设置等问题,给出了这一大跨度拱形屋盖结构考虑周边主要建筑情况下的风压分布特性,分别对0°和90°风向角时数值计算结果与风洞试验结果进行了比较,阐述了两者的异同,两者结果较为一致.验证了数值模拟方法在确定大跨度建筑的平均风荷载时是可行的.The mean wind loads on the construction surface of a gymnasium＇s building were numerically simulated by using RNG κ-ε turbulent model and Fluent 6.2 software for computational fluid dynamics. Some information about the numerical simulation, such as the calculated flow area, grid divisions, boundary conditions, solved parameters, and the criterion for convergence, were detailed. The behaviour of wind pressure on the large span vaulted structure with considering the effects of surrounding buildings was provided. Through the comparison of results between the numerical simulation and the wind tunnel test of the building model in the 0° direction and the 90° direction, the differences of both of them were described, whereas the results indicated they matched fairly well. In a word it is feasible to simulate the mean wind load of the large span buildings by numerical simulation technique.

关 键 词：计算风工程 RNG κ-ε湍流模型 大跨度拱形屋盖结构 数值模拟 

分 类 号：TU312.1[建筑科学—结构工程]