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Sensitivity Analysis of the Atmospheric Dispersion Modeling through the Condition of Input Variable
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 Title & Authors
Sensitivity Analysis of the Atmospheric Dispersion Modeling through the Condition of Input Variable
Chung Jin-Do; Kim Jang-Woo; Kim Jung-Tae;
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 Abstract
In order to how well predict ISCST3(lndustrial Source Complex Short Term version 3) model dispersion of air pollutant at point source, sensitivity was analysed necessary parameters change. ISCST3 model is Gaussian plume model. Model calculation was performed with change of the wind speed, atmospheric stability and mixing height while the wind direction and ambient temperature are fixed. Fixed factors are wind direction as the south wind(l80") and temperature as 298 K(25 "C). Model's sensitivity is analyzed as wind speed, atmospheric stability and mixing height change. Data of stack are input by inner diameter of 2m, stack height of 30m, emission temperature of 40 "C, outlet velocity of 10m/s. On the whole, main factor which affects in atmospheric dispersion is wind speed and atmospheric stability at ISCST3 model. However it is effect of atmospheric stability rather than effect of distance downwind. Factor that exert big influence in determining point of maximum concentration is wind speed. Meanwhile, influence of mixing height is a little or almost not.
 Keywords
ISCST3 model;Sensitivity analysis;Wind speed;Atmospheric stability;Mixing height;
 Language
Korean
 Cited by
1.
하절기 천안 제 2산업단지의 대기오염확산 및 악취물질에 관한 연구,정진도;홍정희;김수영;김정태;최소진;

대한환경공학회지, 2006. vol.28. 12, pp.1316-1322
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