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- It shows that when %A% is more than 2.1, a stable vortex formed within the urban street canyon become two vortexes. 各类型街谷内污染物扩散水平从强到弱依次为迎风面建筑物高度大于背风面建筑物高度的街道峡谷,迎风面建筑物高度小于背风面建筑物高度的街道峡谷;
- This paper describes the current study on vehicle pollutants dispersion in the urban street canyon. 本文叙述了目前城市街道峡谷内机动车污染物扩散的研究现状。
- High pollution levels often occurred in urban street canyon due to the increased traffic emissions and reduced natural ventilation. 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。
- In present study,an urban street canyon dispersion model developed in our unit was used for the simulation of fluid fields and vehicle emissions' dispersion in the typical street canyons. 采用自主开发的街道峡谷内污染物扩散模式,对城市中几种典型的街道峡谷内流场和污染物的浓度场进行了模拟研究。
- Abstract Based on Reynolds stress turbulence model,airflow fields within urban street canyons under different building heights were simulated. 摘要 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。
- In the paper,mathematical statistics and fuzzy mathematics method were utilized to optimize the monitoring time with CO and NO2 as the monitoring gas in urban street canyons. 以CO和NO2为监测气体,应用数理统计和模糊数学方法,对城市街道峡谷机动车排放的日监测时段进行了优化。
- Study of aerosol dispersion in urban street canyon based on DPM model 基于DPM模型的街谷内颗粒物扩散特性研究
- Study on impact of roof shape on pollutant dispersion in an urban street canyon 建筑物顶部形状对街道峡谷内污染物扩散影响的研究
- Numerical investigation of the pollution dispersion in an urban street canyon 城市街道峡谷中污染扩散的数值研究
- When the inflow wind direction towards the street, The center of the vortex is tilt toward leewind side or higher, the released pollutants from urban street canyons become more diluted. 当屋顶来流与街道之间的夹角逐渐增大时,涡旋中心位置由街道中心偏向于背风面及更高层且污染物扩散速度加快。
- A Numerical Model on Flow Field and Concentration Distribution in An Urban Street Canyon 一个研究街道峡谷流场及浓度场特征的三维数值模式
- Investigation of Vehicle Pollutants Dispersion in an Urban Street Canyon Flanked with Arcade 带人行拱廊城市街道机动车污染物扩散规律
- Digital Simulation of Thermal Environment and Countermeasures against the Planning and Design for Urban Street Canyon 城市街谷热环境数值模拟及规划设计对策
- Numerical Methods of Vehicle Exhausted Pollutant Dispersion in Urban Street Canyon 城市街道峡谷中气态污染物扩散数值计算方法研究
- Scalar Fluxes from Urban Street Canyons Part II: Model 城市街道下吹风的数量通量第二部分:模式
- On the escape of pollutants from urban street canyons 城市街道峡谷污染物的排出
- Urban street trees in urban greening skeleton. 城市行道树是城市绿化的骨架。
- urban street canyon 城市街道峡谷
- Numerical study on traffic pollutant dispersion in urban street canyons 典型城市街道内汽车排放污染物扩散规律的模拟研究
- This dissertation researches on the urban street furniture design. 本文是对城市街道公共设施设计的研究。