{"title":"Particle Concentration Distribution under Idling Conditions in a Residential Underground Garage","authors":"Yu Zhao, Shinsuke Kato, Jianing Zhao","volume":97,"journal":"International Journal of Environmental and Ecological Engineering","pagesStart":88,"pagesEnd":95,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10000301","abstract":"
Particles exhausted from cars have adverse impacts on
\r\nhuman health. The study developed a three-dimensional particle
\r\ndispersion numerical model including particle coagulation to simulate
\r\nthe particle concentration distribution under idling conditions in a
\r\nresidential underground garage. The simulation results demonstrate
\r\nthat particle disperses much faster in the vertical direction than that in
\r\nhorizontal direction. The enhancement of particle dispersion in the
\r\nvertical direction due to the increase of cars with engine running is
\r\nmuch stronger than that in the car exhaust direction. Particle dispersion
\r\nfrom each pair of adjacent cars has little influence on each other in the
\r\nstudy. Average particle concentration after 120 seconds exhaust is
\r\n1.8-4.5 times higher than the initial total particles at ambient
\r\nenvironment. Particle pollution in the residential underground garage
\r\nis severe.<\/p>\r\n","references":"[1] Klot S. Von et al., \u201cIncreased asthma medication use in association with\r\nambient fine and ultrafine particles,\u201d European Respiratory Journal, vol.\r\n20, no. 3, pp. 691\u2013702, Sep. 2002.\r\n[2] Nicolai T. et al., \u201cUrban traffic and pollutant exposure related to\r\nrespiratory outcomes and atopy in a large sample of children,\u201d European\r\nRespiratory Journal, vol. 21, no. 6, pp. 956\u2013963, Jan. 2003.\r\n[3] Annette Peters et al., \u201cExposure to Traffic and the Onset of Myocardial\r\nInfarction,\u201d The new England Journal of Medicine, vol. 351, no. 17, pp.\r\n1721\u20131730, Oct. 2004.\r\n[4] Pengzhi Jiang et al., \u201cSimulation of the Evolution of Particle Size\r\nDistributions in a Vehicle Exhaust Plume with Unconfined Dilution by\r\nAmbient Air,\u201d Journal of the Air & Waste Management Association, vol.\r\n55, no. 4, pp. 437\u2013445, Apr. 2005.\r\n[5] Y. H. Liu, Z. He, and T. L. 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