深圳华侨城社区热环境评估及优化策略研究

发布时间：2018-05-03 17:18

本文选题：华侨城社区 + 数值模拟　；参考：《哈尔滨工业大学》2013年硕士论文

【摘要】：随着城市化进程加快，城市住区数量日益增加，而住区的规划设计往往对室外热环境不够重视，使得城市住区热环境不断恶化。同时城市住区热环境与居民生活息息相关，为营造良好的城市住区热环境，需从城市住区规划设计阶段就开始着手考虑其热环境规划方案，对现有住区热环境的研究，能系统而深入的了解热环境的规划方法。然而长期以来，一值缺少对城市中住区热环境的研究，缺少可行性的室外热环境评估手段，针对上述不足，展开以下研究。本文以华侨城为研究对象，对热环境的数值模拟，以热岛强度、和热舒适为标准来体现热环境状况。力求为热环境优化策略提供有益的参考，，具体的研究内容如下：总结目前对于热环境研究的相关方法和理论，分析了热环境相关因子，并总结了各相关因子与热环境的关系。对华侨城社区内的七个测点进行现场实测，其中利用小型气象站测量空气干球温度、相对湿度、风速、水平太阳辐射。由实测数据总结出华侨城社区白天热环境特征，并得出7月20日华侨城社区白天的热岛强度为0.7。各测点的风速空间分布不均匀，测点2（燕栖湖测点）测得的风速数据离散程度小，测点1的风速离散程度最小。温度离散程度相对较大，测点6（LOFT）1.98，离散程度最大，测点7（东组团住宅区）1.51，离散程度最小，西组团的平均温度在七个测点中最小。确定了华侨城社区的建模方法，通过CAD对高程数据的获取，应用GIS软件平台对研究区进行精确建模，经过多次试验实现模型与CFD软件（PHOENICS）的对接。通过数值模拟得到华侨城社区的白天四个时刻的温度分布云图及平均温度，同时计算出了整体风速分布云图，对模拟结果进行评估，获得SET的分布图与PMV分布图，两个评估标准进行验证。并通过MATLAB对现场实测和数值模拟的结果进行校验。对数值模拟结果进行分析总结出华侨城社区各个片区的热环境特点和影响因素，通过总结的影响因素对华侨城社区对热环境比较有利的因素进行总结，并对相对较差区域提出具有可行性的优化建议。
[Abstract]:With the acceleration of urbanization, the number of urban settlements is increasing day by day. However, the planning and design of residential areas often pay less attention to the outdoor thermal environment, which makes the thermal environment of urban settlements deteriorate. At the same time, the thermal environment of urban residential area is closely related to the life of residents. In order to create a good thermal environment of urban residential area, it is necessary to begin to consider its thermal environment planning scheme from the stage of urban residential district planning and design, and to study the thermal environment of existing residential area. Systematic and in-depth understanding of the thermal environment planning methods. However, for a long time, the study of thermal environment in urban residential areas and the feasibility of outdoor thermal environment assessment are lacking. In view of the above deficiencies, the following research is carried out. In this paper, the numerical simulation of thermal environment is carried out in overseas Chinese cities, and the thermal environment is represented by the standards of heat island strength and thermal comfort. To provide a useful reference for the thermal environment optimization strategy, the specific research contents are as follows: This paper summarizes the relevant methods and theories of the research on thermal environment, analyzes the factors related to the thermal environment, and summarizes the relationship between the relevant factors and the thermal environment. The field measurements were carried out at seven measuring points in the community of overseas Chinese City, in which the air dry ball temperature, relative humidity, wind speed and horizontal solar radiation were measured by using a small meteorological station. The characteristics of daytime heat environment in overseas Chinese city community were summarized from the measured data, and the intensity of heat island in Hua overseas Chinese city community was 0.7 on July 20. The spatial distribution of wind speed at each measuring point is not uniform, the dispersion of wind speed data measured at point 2 (Yanqi Lake) is small, and the wind speed dispersion at point 1 is the least. The temperature dispersion degree is relatively large, measuring point 6 loft 1.98, the discrete degree is the biggest, the measuring point 7 (east group residential area is 1.51, the dispersion degree is the least, the average temperature of the western group is the smallest among the seven measuring points. The modeling method of overseas Chinese city community is determined. The height data is obtained by CAD, and the research area is modeled precisely by using GIS software platform. After many experiments, the model is connected with CFD software (PHOENICS). Through numerical simulation, the temperature distribution cloud map and average temperature at four times during the day in Huaoxia City community are obtained. At the same time, the overall wind speed distribution cloud map is calculated, and the simulation results are evaluated to obtain the distribution map of SET and the distribution map of PMV. Two evaluation criteria were validated. The results of field measurement and numerical simulation are verified by MATLAB. Through the analysis of the numerical simulation results, the characteristics of the thermal environment and the influencing factors of each area in the community of overseas Chinese City are summarized, and the factors favorable to the thermal environment of the community of overseas Chinese City are summarized through the factors summarized. At the same time, some feasible optimization suggestions are put forward for the relatively poor areas.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU119

【参考文献】