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作 者:杨明 赵福云[1,2] 高菡 周宇轩 刘娣 YANG Ming;ZHAO Fuyun;GAO Han;ZHOU Yuxuan;LIU Di(School of Civil Engineering,Hunan University of Technology,Zhuzhou 412007,Hunan,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China;College of Pipeline and Civil Engineering,China University of Petroleum,Qingdao 266580,Shandong,China)
机构地区:[1]湖南工业大学土木工程学院,湖南株洲412007 [2]武汉大学动力与机械工程学院,武汉430072 [3]中国石油大学(华东)储运与建筑工程学院,山东青岛266580
出 处:《亚热带资源与环境学报》2024年第2期47-53,共7页Journal of Subtropical Resources and Environment
基 金:科技部十四五国家重点研发计划(U2022YFC3801601-02);国家自然科学基金面上项目(51778504);湖北省自然科学基金(气象)创新发展联合基金重点项目(2022CFD016)。
摘 要:为分析绿蓝空间协同作用下环湖建筑街区的热湿环境,采用了CFD(计算流体力学)的方法对4种典型建筑街区形态进行了数值模拟。结果表明:气流作用下,绿蓝空间对中下游建筑街区的温湿度影响较大,尤其是两岸和下游中央区域。其中等高型(H=8 m)、环湖上升型由于建筑高度较低,气流更快地通过街区,形成“扩散状”温湿度分布;等高型(H=12 m)、环湖下降型由于低温气流在水体上空没有足够时间沉降,形成“聚集状”温湿度分布,从而在植被附近形成多个冷旋涡,进而产生局域的“冷岛效应”。蓝色空间取代部分密集建筑街区,在与绿色空间协同作用下,通过合理布局能较大幅度优化建筑街区环境。In order to analyze the thermal and humid environment of the building blocks around the lake under the synergistic effect of green and blue space,the CFD(Computational Fluid Dynamics)method was used to carry out numerical simulation of four typical building blocks,namely,the contour type(H=8 m,12 m),the rising type and the falling type around the lake.The results show that under the influence of airflow,the green and blue spaces have no effect on the temperature and humidity of upstream building blocks,while significantly affect the temperature and humidity of middle and downstream building blocks,especially in the central areas on both banks and downstream.The height change and height difference of the building blocks have a greater impact on the temperature and humidity field in the street valley.For the contour type(H=8 m)and the rising type around the lake,due to the low building height,the air flow passes through the block faster,forming a“Diffusive Form”temperature and humidity distribution.The contour type(H=12 m)and the descending type around the lake have not had enough time for the low temperature air flow to settle over the water body,forming a“Aggregate Form”temperature and humidity distribution,thus forming multiple cold vortices near the vegetation,thus producing a local“cold island effect”.The research results show that Blue space can replace some dense building blocks,and under the synergistic effect of green space,the building block environment can be greatly optimized through reasonable layout.
关 键 词:绿蓝空间 环湖建筑街区 CFD 扩散状 聚集状 冷岛效应
分 类 号:X51[环境科学与工程—环境工程]
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