基于CFD模拟技术的深圳市城市风环境分析

常规建筑自然通风设计均是基于城市尺度的主导风向和风速,并未考虑建筑所处地区的地理位置对主导风速和风向产生的影响,然而城市风由于城市街道、河流、建筑高度、布局、以及太阳辐射、温湿度不同,会发生很大的变化,继续利用城市主导风向作为建筑自然通风分析的边界条件,会产生很大的误差。以深圳市为例,通过CFD软件对城市尺度风环境进行模拟分析,初步得出城市不同分区的风环境。

CFD Simulation Technology Based Analysis on Urban Wind Environment of Shenzhen

Natural ventilation design of conventional construction is based on the city-scale dominant wind direction and wind speed, and didn＇t take into account the impact of building geographical location where the building is seated, but city wind in a district will be greatly different with diverse city streets, rivers, building height, city layout, solar radiation, temperature and humidity in one city. Then if dominant wind direction and wind speed is continue used as boundary condition in a natural ventilation analysis, great error will be produced. In this paper, taking Shenzhen City as an example, simulate and analyze the city- scale wind environment based on CFD software, and derive different wind environments in different districts.