【作者】 张雯； 颜卫亨； 张玉杰；

【Author】 Zhang Wen;Yan Weiheng;Zhang Yujie;School of Changan University;

【机构】 长安大学建筑工程学院；

【摘要】 为研究T型平面野营房屋表面风致雪漂效应,基于流体动力学基本原理,采用欧拉-欧拉方法,利用两相流理论,运用FLUENT软件对立方体周围雪飘分布进行数值模拟,与立方体实测数据进行对比分析,确定合理的参数设置及边界条件;在此基础上,选取风向角为0°,45°,90°,135°,180°,风速为5m/s,7.5m/s,10m/s,模拟时长为12h,24h,36h为参数,对45种工况进行数值风洞计算,得到T型野营房屋表面风致雪漂分布规律及屋面各分区积雪分布系数。研究结果表明:迎风区比背风区积雪分布对风的作用更为敏感,相比风吹时长,风速的变化更能导致屋面积雪侵蚀与沉积情况的改变。更多还原

【Abstract】 In order to study the effect of wind-induced snow drift on the surface of T-planing camping houses,based on the basic principles of fluid dynamics,the Euler-Euler method was used.Using the two-phase flow theory,the FLUENT software was used to simulate the distribution of snow drift around the cubes.The cubic real-measured data were compared and analyzed to determine reasonable parameter settings and boundary conditions.On this basis,the wind direction angles were 0°,45°,90°,135°,180°,and the wind speeds were 5 m/s,7.5 m/s,and 10 m/s,and the simulated duration is 12 h,24 h,and 36 h as parameters.Numerical wind tunnel calculations are performed on 45 operating conditions to obtain the distribution pattern of wind-induced snow drift on the surface of T-shaped camping houses and distribution coefficient of snow distribution on each section of the roof.The results show that the distribution of snow in the upwind region is more sensitive to the effects of wind than the distribution of snow in the leeward region.Compared with the wind,the changes in wind speed can lead to changes in snow erosion and deposition in the housing area.更多还原