基于CFD模拟的通风屋顶隔热性能分析

The Analysis of Heat Insulation Performance of Ventilation Roof Based on CFD Simulation

以南方普遍采用的通风隔热屋顶为例,应用Phoenics(建筑声环境、热环境模拟)软件模拟分析通风层高度的改变对通风遮阳屋顶隔热效果的影响。模拟结果表明,间层高度在有限范围内的改变会很大程度上影响间层通风效果,进而影响顶层隔热效果,但是间层高度增加到一定数值后,顶层隔热效果已上升不明显。结果证明,采用计算流体力学的方法并借助Phoenics软件可以实现对通风隔热层的环境模拟,对以后通风隔热屋顶的优化设计有一定的指导意义。

This paper took the widespread adoption of ventilation and sunshade roof in the south as an example, by using the CFD software Phoenics to simulate and analyze the heat insulation effect of ventilation height on ventilation-and-sunshade roof. The simulation results showed that the height of ventilation layer could largely affect the ventilation effect of ventilation layer, but with the height up to a certain value the ventilation effect of ventilation layer was not significant improved. We could see that the environment of ventilation and sunshade roof can be simulated by the business software Phoenics, which was very useful to the optimization design of ventilation-and-sunshade roof.