Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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Characteristic Analysis of the Surface Concentration Distribution under the Influence of Particle Settling by Lagrangian Model

Lagrangian 모형에 의한 분진 침강 효과에 따른 지표면 농도의 분포특성 분석

  • Park, I.S. (Atmospheric Research Department National Institute of Environmental Research) ;
  • Kang, I.G. (Atmospheric Research Department National Institute of Environmental Research) ;
  • Choi, K.D. (Atmospheric Research Department National Institute of Environmental Research)
  • 박일수 (국립환경연구원 대기연구부) ;
  • 강인구 (국립환경연구원 대기연구부) ;
  • 최기덕 (국립환경연구원 대기연구부)
  • Published : 1993.05.25
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Abstract

An analysis for particle settling effects via of plume centerline tilted exponentially under the influence of panicle settling velocity is carried out for particle of $30{\mu}m$ diameter with $1g/cm^3$ density and 0.02m/s settling velocity corresponding to its particle characteristic according to various wind speeds, atmospheric stabilities. Characteristic analysis of surface concentration distribution simulated by Lagrangian model also are carried out under the influence of plume centerline tilted exponentially at 10m stack height emitted 200 particles per second. This study reveals that plume centerline at the nearby source is sharply tilted exponentially under the condition of stable, weakly wind speed, therefore the lower concentration at the nearby source, the higher concentration at the downwind distance far away from source than actual one is brought out, if not apply the effect of plume centerline tilted exponentially to diffusion Model.

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