基于热环境模拟的生态园区规划研究

Study on ecological park planning based on the thermal environment simulation

以苏州地区生态园区为研究对象,分析园区热岛效应的影响因素以及与规划相关的元素,利用CFD技术对现状及规划状况下的园区热环境进行模拟研究,得到不同方案下温度场、速度场及空气龄场等计算结果,对比分析,发现通过规划生态廊道、控制建筑密度及高度、提高乔木覆盖率及推广屋面绿化等手段,可以有效缓解热岛效应,提高园区舒适度.同时也为生态规划设计提供了一种新的思路.

Taking the ecological parks of Suzhou as research objects in this paper, the author analyzed the factors impacting the heat-island effect and elements of the park planning. Then by using the CFD technology to simulate the thermal environment of the parks in current situation and planning condition, respectively the temperature, velocity and mean age of air field under different scenarios were calculated. After comparing and analyzing, the author found out that the heat-island effect was effectively alleviated and the park staff comfort was improved through methods such as planning ecological corridors, controlling the building density and height, increasing tree coverage and promo- ting roof greening. These results also provided an innovative idea for the ecological plan- ning and design.