全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

公路路面热辐射对汽车排放NOx

DOI: 10.3969/j.issn.1674-0696.2013.02.14, PP. 234-237

Keywords: 环境工程,尾气扩散,路面热辐射,数值模拟,environmentalengineering,pollutantdiffusion,highwaypavementthermalradiation,numericalsimulation

Full-Text   Cite this paper   Add to My Lib

Abstract:

:?针对公路沥青路面热辐射,建立了三维大气流动及机动车排放物扩散的CFD仿真模型,进行了非定常三维湍流流动模拟;结合气象因素及单车排放NOx扩散浓度的实地测试,研究了路面热辐射对机动车排放物扩散的影响。结果表明:路表加热作用所产生的热力环流使得污染物能够被有效地输送和扩散至上空,从而使得近地面的污染物浓度下降;随地表温度增高,输送效应增强;在尾气排放方向处于距排气口10m远处,人的呼吸带高度处NOx浓度仍然较高;NOx扩散浓度的模拟值与实测值具有较好的符合,验证了数值模型的可靠性。

References

[1]  Chan TL,Dong G.Validation of a two-dimensional pollutant dispersion model in an isolated street canyon [J].Atmospheric Environment, 2002,36: 861-872.
[2]  Hertel O,Berkowicz R.Operational Street Pollution Model( OSPM) : Evaluation of the Model on Data from St Olavs Street in Oslo: DMU LUFT-A135 [R].Denmark: National Environmental Research Institute,DK-4000 Roskilde,1989.
[3]  SotirisV,Bernard E A F,Koulis P,et al.Modeling air quality in street canyons: A review [J].Atmospheric Environment,2003, 37: 155-182.
[4]  Petersen W B.User’s Guide for HIWAY-2: A Highway Air Pollution Model [R].Washington D.C.: EPA,1980.
[5]  李修刚,王炜,李方,等.公路交通气态污染物扩散模式中的几 何参数计算[J].东南大学学报,2000,30( 2):131-137.
[6]  Li Xiugang,Wang Wei,Li Fang,et al.Geometry parameter computing in gas pollutants diffusion model of highway traffic [J]. Journal of Southeast University,2000,30( 2):131-137.
[7]  谢晓敏,黄震,王嘉松.日光照射地面对街道峡谷内流场的影 响研究[J].水动力学研究与进展A 辑,2004,19( 增刊1) : 865-870.
[8]  Xie Xiaomin,Huang Zhen,Wang Jiasong.Study on street canyon flows with bottom heating[J].Chinese Journal of Hydrodynamics, 2004,19( supp 1):865-870.
[9]  杨文娟,顾海荣,单永体.路面温度对城市热岛的影响[J]. 公路交通科技,2008,25( 3):147-152.
[10]  Yang Wenjuan,Gu Hairong,Shan Yongti.Influence of pavement temperature on urban heat island [J].Journal of Highway and Transportation Research and Development,2008,25 ( 3 ):147- 152.
[11]  张新,孔永健,关彦斌.沥青路面对城市大气受热的影响分析 [J].金陵科技学院学报,2006,22( 2):16-18.
[12]  Zhang Xin,Kong Yongjian,Guan Yanbin.Analysis of the effect of asphalt pavement on heating community atmosphere [J].Journal of Jinling Institute of Technology,2006,22( 2):16-18.
[13]  陈景仁.湍流模型及有限分析法[M].上海: 上海交通大学出 版社,1 988.
[14]  Chen Jingren.Turbulence Model and Finite Analytic Method [M].Shanghai: Shanghai Jiaotong University Press,1998.
[15]  陶文铨.数值传热学[M].2 版.西安: 西安交通大学出版社,2001.
[16]  Tao Wenquan.Numerical Heat Transfer [M].2nd ed..Xi’an:Xi’an Jiaotong University Press,2001.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133