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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

25卷

期数:

2008年01期

页码:

76-83

栏目:

出版日期:

2008-03-20

文章信息/Info

Title:

Numerical Simulation of Characteristics of Mean Wind Pressure Distribution and Flow Field on Typical Spatial Structures

作者:

李清雅，叶继红

东南大学土木工程学院,江苏南京210096

Author(s):

LI Qing-ya, YE Ji-hong

School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China

关键词:

计算流体动力学;  数值模拟;  空间结构;  平均风压;  压力系数

Keywords:

computational fluid dynamics;  numerical simulation;  spatial structure;  mean wind pressure;  pressure coefficient

分类号:

TU311.3

DOI:

-

文献标志码:

A

摘要:

运用计算流体动力学技术,基于FLUENT 6.1.22流体动力学数值模拟平台,采用雷诺应力模型,对球壳、悬链面壳及椭圆双曲抛物面壳这3类结构的平均风压分布及绕流特性进行了深入研究。首先将数值模拟结果与风洞试验结果进行对比,验证了数值模拟方法的正确性; 然后系统研究了风速、风向角、地面粗糙度、缩尺比、矢跨比等因素对结构风压分布及其绕流特性的影响; 最后在B类场地下,根据结构形式和风压分布规律,对结构的压力系数进行面积上的加权平均得到工程上实用的体型系数,可供设计参考。

Abstract:

Based on FLUENT 6.1.22 soft platform with Reynolds stress model(RMS), authors implied the computational fluid dynamics(CFD)numerical simulated technology to research mean wind pressure distribution on typical spatial structures, such as dome, catenoid and elliptic hyperbolic paraboloid, as well as the characteristics of fluid influence around the structures. The numerical simulation results were found to have good agreement with the wind tunnel experimental results. The characteristics of wind pressure distribution and the flow field were discussed by considering some parameters, such as wind velocity, wind direction angle, roughness of terrain, scale and rise-span ratio. Finally, based on the structure shape and the regularity of wind pressure distribution, in site category B, the local wind pressure coefficient of every region was gained, which can provide reference for the engineering design.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2007-12-06
基金项目:国家自然科学基金项目(50678036)
作者简介:李清雅(1982-),男,河北威县人,工学硕士研究生,E-mail:liqingya@yahoo.cn。

常用功能

更新日期/Last Update: 2008-03-20