上悬窗开口30°下风向入射角对室内风压通风的影响  

Ventilation Effect of Hung-window Based on CFD Simulation

作　　者：杨子鲁 赵媛 王安平 杜晓丽 冯佳 姚昊翊 YANG Zi-lu;ZHAO Yuan;WANG An-ping;DU Xiao-li;FENG Jia;YAO Hao-yi(Energy and Environmental Science,Yunnan Normal University,Kunming 650504,China)

机构地区：[1]云南师范大学能源与环境科学学院,昆明650504

出　　处：《建筑节能（中英文）》2022年第1期20-24,共5页Building Energy Efficiency

基　　金：2020年云南省大学生创新创业训练计划项目(202010681113)。

摘　　要：室内风环境在现代日常生活中越来越受到重视。不同的窗型对室内风环境有明显的影响,如上悬窗作为一种常见的窗型,其对室内风环境的影响与其他开窗方式有着很大的不同。以风速和风速不均匀系数作为风环境的评价指标,利用CFD模拟软件———Airpak搭建起典型上悬窗通风的三维模型,并按照需求设定边界条件和划分网格。通过模拟获得上悬窗开启30°时不同风向投射角的工况下风速等参数,从而可计算出在风压通风条件下室内4个不同高度平面(0.6 m、0.9 m、1.2 m、1.5 m)的平均风速、风速不均匀系数等参数;再根据模拟数据绘制图表并总结出最大风速、平均风速和风速不均匀系数的变化规律,并以此为基础制定通风策略来保证室内空气质量。Indoor wind environment has drawn more and more attention in our modern daily life.Different types of window will have obvious influence on the indoor wind environment.Compared with other types of window,the top-hung window,as a kind of common window type,has quite different influence on indoor wind environment.By using the CFD simulation software-Airpak,taking the wind velocity and velocity deviation coefficient as the evaluation indexes of wind environment to build a threedimensional model of typical room with top-hung window,then set the boundary conditions and divide grid according to the requirements.Through simulation,the wind velocity and other parameters under different wind projection angles could be calculated when the top-hung window opened at 30°.Then the average wind velocity and velocity deviation coefficient of four different height planes(0.6 m,0.9 m,1.2 m,1.5 m)in the room under wind pressure ventilation conditions could be calculated.Finally,we can draw charts based on the simulated data and summarize the variation regulation of the maximum wind velocity,the average wind velocity and velocity deviation coefficient,and develop ventilation strategy based on it to ensure indoor air quality.

关 键 词：风速 风速不均匀系数 CFD模拟 上悬窗 通风效果 

分 类 号：TU201.5[建筑科学—建筑设计及理论]