基于CFD的室内自然通风及热舒适性的模拟

自然通风条件下室内空气流动及其对热舒适性的影响是住宅设计的重要因素．基于计算流体力学方法，应用Fluent软件，开展了自然通风热舒适性的研究．建立了天津某小区高层住宅建筑中两种户型的计算模型，对夏季典型气候下室内自然通风情况进行了模拟分析探讨了风向、风速和气温对室内自然通风的速度场和热舒适指数的影响．得出了A型房间的通风效果要优于B型房间的结论．利用数值方法对住宅的自然通风进行模拟，不仅可以评价房间的自然通风效果，而且对于住宅户型的设计具有重要的参考价值．

Simulation of Interior Natural Ventilation and Thermal Comfort Based on CFD

The interior air flow and its influence on thermal comfort under natural ventilation are important factors in hous- ing design. By using the computational fluid dynamics （CFD） method and Fluent software,numerical model of two types ot apartments of a high building in a residential district located in Tianjin was built up. The interior natural ventilation in typical climate of the summer season was simulated and analyzed. The influences of direction and velocity of wind,and temperature on interior natural ventilation velocity field and interior thermal comfort index was studied. The results reveal that the venti- lation effect in type A is better than that in type B. The analysis of natural ventilation in buildings by numerical simulation can not only evaluate their ventilation effects ,but also provide an important reference for building planning and design.