应用雷诺应力湍流模型,模拟了不同高度比的城市街道峡谷的气流场.结果表明:峡谷的对称性对其内部气流场有显著影响.前高后低型峡谷下部为逆时针旋涡,上部为顺时针旋涡,峡谷越深,流场发展的越充分;峡谷内部墙面存在明显的驻点.前低后高型峡谷只存在一个大的顺时针旋涡,随着峡谷的加深,内部气流速率有减小的趋势;峡谷达到一定深度后出现驻点.对称型峡谷内部形成了顺时针旋涡,强度不大;随着峡谷的加深,内部流场转为一顺一反2个旋涡的二元结构;仅当峡谷很深时才出现明显驻点.前低后高型峡谷的气流场形式更有利于污染物的迁移、扩散,在城市规划中应尽量结合主导风向设计这类建筑布局.国家科技攻关项目0262-672
The two-dimensional (2D) idealized street canyon, which is the generic unit of a city, is the platfo...
利用南昌地区1988～2000年期间的4景城市建设用地分布图和叠图代数计算方法,分两个比较时段(1988～1991年及1998～2000年)研究了快速城市化地区建成区景观格局特征对建设用地扩张的影响;...
As streets cover almost twenty-five percentages of the urban open spaces, designing streets is a vit...
机动车尾气排放不断增加以及城市通风能力降低,常导致城市街谷内的空气污染.城市街谷大气环境主要研究方法包括外场观测、实验室物理模拟和数值计算.外场观测和物理模拟可以考察街谷内污染物的传输扩散规律并对数值...
街道峡谷中机动车排放污染物的扩散取决于屋顶风向和风速,并受街道峡谷宽高比、峡谷两侧街区建筑物高度的对称性和高度分布及街区形状等因素的影响.街道峡谷宽高比接近1时,递升型峡谷以及宽阔街道有利于污染物的扩...
This study uses Computational Fluid Dynamics (CFD) modelling to test the effect of roof shape on a...
文章介绍一种用于模拟街谷流场和温度场的动力学模式和热力学模式.应用动力模式模拟了方柱体塔楼和圆柱体塔楼形成的流场,应用动力和热力模式模拟了街谷中流场和温度场的日变化过程.计算实例表明,上述模式可用于城...
采用改进的ARPS动力模式模拟城市街谷流场,应用动力和能量平衡耦合模式模拟街谷温度场日变化过程.该动力模式能够模拟建筑物周围典型流场,包括街谷涡旋及背风区尾流涡旋等.耦合模式能够模拟街谷各接收面能量收...
[[abstract]]Carbon monoxide distribution in street canyons under various geometry's, atmospheric sta...
Street canyons are ubiquitous in urban areas. Traffic-related air pollutants in street canyons can a...
The present study investigates the impact of building façade geometrical details on the pollutant tr...
[[abstract]]Air pollution in big city areas resulting from exhaust emissions is a major urban proble...
The aim of this work is to gain further insight into the role played by the building aspect ratio (A...
Air pollution in big city areas resulting from exhaust emis-sions is a major urban problem. Often tr...
AbstractThe results of simulation in the scale models of buildings allowed determining how the air f...
The two-dimensional (2D) idealized street canyon, which is the generic unit of a city, is the platfo...
利用南昌地区1988～2000年期间的4景城市建设用地分布图和叠图代数计算方法,分两个比较时段(1988～1991年及1998～2000年)研究了快速城市化地区建成区景观格局特征对建设用地扩张的影响;...
As streets cover almost twenty-five percentages of the urban open spaces, designing streets is a vit...
机动车尾气排放不断增加以及城市通风能力降低,常导致城市街谷内的空气污染.城市街谷大气环境主要研究方法包括外场观测、实验室物理模拟和数值计算.外场观测和物理模拟可以考察街谷内污染物的传输扩散规律并对数值...
街道峡谷中机动车排放污染物的扩散取决于屋顶风向和风速,并受街道峡谷宽高比、峡谷两侧街区建筑物高度的对称性和高度分布及街区形状等因素的影响.街道峡谷宽高比接近1时,递升型峡谷以及宽阔街道有利于污染物的扩...
This study uses Computational Fluid Dynamics (CFD) modelling to test the effect of roof shape on a...
文章介绍一种用于模拟街谷流场和温度场的动力学模式和热力学模式.应用动力模式模拟了方柱体塔楼和圆柱体塔楼形成的流场,应用动力和热力模式模拟了街谷中流场和温度场的日变化过程.计算实例表明,上述模式可用于城...
采用改进的ARPS动力模式模拟城市街谷流场,应用动力和能量平衡耦合模式模拟街谷温度场日变化过程.该动力模式能够模拟建筑物周围典型流场,包括街谷涡旋及背风区尾流涡旋等.耦合模式能够模拟街谷各接收面能量收...
[[abstract]]Carbon monoxide distribution in street canyons under various geometry's, atmospheric sta...
Street canyons are ubiquitous in urban areas. Traffic-related air pollutants in street canyons can a...
The present study investigates the impact of building façade geometrical details on the pollutant tr...
[[abstract]]Air pollution in big city areas resulting from exhaust emissions is a major urban proble...
The aim of this work is to gain further insight into the role played by the building aspect ratio (A...
Air pollution in big city areas resulting from exhaust emis-sions is a major urban problem. Often tr...
AbstractThe results of simulation in the scale models of buildings allowed determining how the air f...
The two-dimensional (2D) idealized street canyon, which is the generic unit of a city, is the platfo...
利用南昌地区1988～2000年期间的4景城市建设用地分布图和叠图代数计算方法,分两个比较时段(1988～1991年及1998～2000年)研究了快速城市化地区建成区景观格局特征对建设用地扩张的影响;...
As streets cover almost twenty-five percentages of the urban open spaces, designing streets is a vit...
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