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KMID : 1024519970060050437
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Journal of the Environmental Sciences
1997 Volume.6 No. 5 p.437 ~ p.449
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Numerical Simulation for Diffusion and Movement of Air Pollutants in Atmospheric Flow Coastal Urban Region
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Lee Hwa-Woon
Kim Yoo-Keun
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Abstract
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To predict diffusion and movement of k pollutants In coastal urban region a numerical simulation shouts be consider atmospheric flow field with land-sea breeze, mountain-valley wand and urban effects. In this study we used Lagrangian [article dispersion method In the atmospheric flow field of Pusan coastal region to depict diffusion and movement of the Pollutants emoted from particular sources and employed two grid system, one for large scale calculating region with the coarse mesh grid (CMG) and the other for the small region with the One mesh 914 (FMG). It was found that the dispersion pattern of the pollutants followed local circulation system in coastal urban area and wale air pollutants exhausted from Sasang moved Into Baekyang and Jang moutain, air pollutants from Janglim moved into Hwameong-dong region.
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KEYWORD
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diffusion, movement, coastal urban region, atmospheric flow field, Lagrangian partical dispersion model, particular sources, two grid system
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