摘要
为研究野营折叠帐篷群体风致干扰效应,基于流体动力学基本原理和大气边界层基本理论,运用FLUENT软件对野营折叠帐篷群体风致干扰效应数值模拟风场的阻塞率进行研究,通过与风洞试验数据的对比分析,确定其参数取值。依据野营折叠帐篷的安装和通行距离要求,确定了帐篷之间的横向间距和纵向间距。以风向角、帐篷的间距为变量参数,分别对单个帐篷、单列6行帐篷及双列6行帐篷共75种工况进行数值模拟研究,得出了出现放大效应和遮挡效应的条件。以最大干扰因子作为放大因子,在单个帐篷体型系数的基础上,提出了适用于野营折叠帐篷群体结构抗风设计的体型系数。分析表明:野营折叠帐篷群体风致干扰效应是不可忽略的,设计及使用时应引起足够的重视。
To investigate wind-induced interference effects in folding camping tent groups, the blocking ratio was investigated using the software FLUENT, the models of which were based on fluid dynamic theory and atmospheric boundary layer theory. The blocking ratio was determined by a comparative analysis of numerical results and wind tunnel test data. According to the requirements of the tent installation and the passage width, both depth and width spacing were obtained. Meanwhile, regarding the wind direction and the space between tents as variable parameters, 75 conditions, including single tent, single column, and two columns of tents （with every column consisting of 6 tents） were simulated, and the amplification effect and shielding effect were derived accordingly. In addition, setting the maximum interference factor as the amplification factor, a shape coefficient was proposed, which is suitable for the wind-resistant design of folding camping tent groups and is based on the shape coefficient of single tent. The analysis in the present paper indicates that the wind-induced interference effect has significant implications for the design and the use of folding camping tent groups.
出处
《工程力学》
EI
CSCD
北大核心
2016年第4期166-175,共10页
Engineering Mechanics
基金
总后建筑工程研究所研究基金项目
陕西省自然科学基金项目(2004E204)
中央高校科研专项资金项目(2013G3284016)
关键词
野营折叠帐篷群体
放大效应
干扰因子
体型系数
放大因子
folding camping tent groups
amplification effect
interference factor
shape coefficient
amplification factor
