住宅小区风环境及热环境的模拟研究

发布时间：2019-05-18 17:27

【摘要】：住宅小区风环境及热环境分析是为绿色建筑评估做前期准备的。良好的小区自然通风可以提高室外环境的舒适度，加快室外热量的消散和污染物排放，保证居民的舒适和健康。合理规划小区建筑可以有效地缓解热岛效应，降低建筑的空调能耗。绿化对改善室外热环境质量，调节小区微气候有重要的作用。本文以位于武汉市的一个实际住宅小区作为研究对象，应用CFD软件对小区内冬夏季风环境以及夏季热环境进行了数值模拟。通过对小区冬夏季风环境的风速云图，风速矢量图以及动压和静压云图的分析，找出小区内风环境不满足要求的区域，在此基础上提出了改进方案，对小区内风环境不合理区域的建筑进行适当调整，并对改进后的方案进行模拟计算，，使之最终能够满足绿色建筑评价标示对小区风环境的相关规定。同样的采用CFD模拟方法模拟计算了夏季典型计算日在一天中不同时刻的温度场，对设计方案及改进方案的热岛强度进行了评估。最后在设计布局的基础上设置了乔木，树木，人工湖，草坪四种不同的绿化形式，模拟研究了这四种绿化形式对小区温度场的影响情况。本文的研究成果为住宅小区风环境及热环境预测和评价提供了理论依据，并为小内建筑布局的规划以及小区内绿化方案的确定提出指导意见。
[Abstract]:The analysis of wind environment and thermal environment in residential district is prepared for the evaluation of green building. Good natural ventilation can improve the comfort of outdoor environment, speed up the dissipation of outdoor heat and pollutant discharge, and ensure the comfort and health of residents. Reasonable planning of residential buildings can effectively alleviate the heat island effect and reduce the energy consumption of air conditioning. Greening plays an important role in improving the quality of outdoor thermal environment and regulating the microclimate in residential areas. In this paper, a practical residential district in Wuhan is taken as the research object, and the winter and summer monsoon environment and summer thermal environment in the district are simulated by using CFD software. Based on the analysis of wind speed cloud map, wind speed vector diagram, dynamic pressure and static pressure cloud diagram of winter and summer monsoon environment in the district, the areas in which the wind environment in the district does not meet the requirements are found out, and the improvement scheme is put forward on this basis. The buildings in the unreasonable wind environment in the community are properly adjusted, and the improved scheme is simulated and calculated, so that it can finally meet the relevant provisions of the green building evaluation and marking on the wind environment of the community. Similarly, the CFD simulation method is used to simulate and calculate the temperature field of the typical calculation day in summer at different times of the day, and the heat island strength of the design scheme and the improved scheme are evaluated. Finally, on the basis of the design layout, four different greening forms of trees, artificial lakes and lawns are set up, and the effects of these four greening forms on the temperature field of the community are simulated and studied. The research results of this paper provide a theoretical basis for the prediction and evaluation of wind environment and thermal environment in residential areas, and provide guidance for the planning of small interior building layout and the determination of greening scheme in residential areas.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU984.12;TU119

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