【作者】 罗戴维；

【导师】 董靓；

【作者基本信息】 西南交通大学 ， 建筑技术科学， 2013， 硕士

【摘要】 随着城市经济的快速发展,人们生活水平的快速提高,人们对生活质量追求的提高,居住在城市中的人们在闲暇之余,希望能有舒适的休闲场所进行休闲,休闲街区自然而然地成为大家关注的热点,对休闲街区研究应运而生。本文以宽窄巷子为例,针对城市休闲街区室外微气候环境开展了以下研究。1、为了解休闲街区室外微气候的基本情况,本文对宽窄巷子进行实地调研,在宽窄巷子中三个不同地方使用WBGT仪器进行测量,总结出了宽窄巷子一定时间范围内微气候的变化规律以及各个测点微气候的基本状况。同时对比了微观实测数据与宏观气象数据的差异,提出了在无法进行实地测量的情况下,进行计算机模拟时可以直接采用气象台的气温与相对湿度进行初始条件进行分析,而风速由于关联性不好再加上风本身的多变性,必须进一步进行处理才能进行模拟分析。2、利用ECOTECT对宽窄巷子室外热环境进行详细的日照遮挡和太阳辐射模拟分析,并且对日照间距、建筑朝向和建筑布局进行了进一步分析,通过提供详细的分析数据和分析结果图,弥补了实测时没有同时进行三个测点测量的不足之处,并且对宽窄巷子整体热环境进行了横向对比,总结出了宽窄巷子热环境的优劣性。3、针对城市风环境的独特性与复杂多变性,本文利用FLUENT软件,总结了城市中大气边界层气体流动的基本模拟体系。另外为了更加准确地模拟植物冠层对空气流动的阻碍作用,本人在多孔介质理论基础上,创新性的提出利用叶片面积来计算植物冠层在风环境模拟中的相关系数,并且与前人的风洞实验进行了对比效验,验证了模拟体系较为可靠。最后利用本文提出的建筑与植物风环境模拟体系,以宽窄巷子为例进行了风环境模拟分析,提供了室外风环境模拟分析的基本范例,以供参考研究。本论文为准确预测和客观评价城市休闲街区室外微气候环境奠定了基础,论文中提出了热环境模拟分析体系和风环境模拟分析体系,使得利用计算机模拟来指导和优化城市休闲街区室外微气候成为了可能。更多还原

【Abstract】 With the city’s rapid economic development, people’s living standards quickly improve, people’s pursuit of quality of life improved, the people who are living in the city, hoping to have their own place to relax, the casual neighborhood has naturally become the focus of attention. So the following research carried out " The width of the alley" as a example to study the urban casual neighborhood outdoor microclimate environment.1、In order to understand the basic situation of casual neighborhood outdoor microclimate, In the width of the alley I conduct field research in three different places with WBGT measurement instruments to measure. and summed up the basic situation of the microclimate variation in the width of the alley within a certain time frame.2、Take advantage of ECOTECT to study the width of the alley outdoor thermal environment details sunshine shelter analysis and solar radiation simulation analysis. And take a further analysis to sunshine spacing, building orientation and layout of the building. By providing a detailed analysis of the data and analysis chart, make up the inadequacies observed without simultaneous measurement of three points. finally, horizontal contrast to the thermal environment and the overall width of the alley, summed up the pros and cons of the thermal environment of the width of the alley.3、BY using FLUENT software, the unique, complex and changeable Urban wind environment summed up the basic simulation of atmospheric boundary layer in the gas flow in the city system. In addition, in order to more accurately simulate the plant canopy air flow impediment, I based on the theory of porous media, the innovative utilize leaf area to calculate the correlation coefficient of the plant canopy in the wind environment simulation, and predecessors the wind tunnel experiments compared the efficacy and verify the analog system more reliable. Finally, this paper proposed wind environment simulation system for buildings and plants, wind environment simulation analysis to the width of the alley as a example, provides a basic example of the outdoor wind environment simulation analysis for the study of reference.The papers laid the foundation for accurate forecasting and objective evaluation of urban leisure neighborhoods outdoor microclimate environment, the paper proposed thermal environment simulation analysis system wind environment simulation analysis system makes utilize computer simulations to guide and optimize urban casual neighborhood outdoor microclimate became possible.更多还原