湖南农村住宅周边植被对自然通风影响的研究

借鉴湖南丘陵地区农村住宅选址,提出农村平原地区住宅北向植被同样可以遮挡冬季寒风,同时不影响夏季自然通风,还可进一步提升湖南农村住宅居住舒适度.通过CFD在剖面上模拟了植被与住宅间不同的距离对室内自然通风的影响,并根据南北墙面无因次压力分布确定了最佳取值.以此为基础,在平面上模拟了植被的种植范围,同样依据无因次压力分布,获得最佳取值.最终获得了自然通风性能最优的住宅结合绿化设计模式,能够满足湖南夏热冬冷气候区冬夏两季的不同的自然通风需求.

Influence of Vegetation around Rural Housing on Natural Ventilation in Hunan Province

Based on the site selection of Hunan rural housing with hilly terrain,the northern vegetation can shelter the house in flat area from cold wind in winter,and the natural ventilation in summer will not be influenced.It is useful for rural housing to improve the indoor thermal environment.The influence of different distances between the vegetation and the house were simulated in the section by CFD,and the optimal distance was obtained on the basis of the zero dimension pressure distribution on southern and northern wall surfaces.Then,the different widths of vegetation were also simulated in plane in the same way,and the optimal width was obtained.At last,the optimal design model of rural housing with vegetation was obtained,and the different requirements of natural ventilation in winter and summer can be satisfied simultaneously.