Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Wind Tunnel Experiments for Studying Atmospheric Dispersion in the Complex Terrain II. Gaussian Modeling of Experiments in a Moutainous Area

복잡한 지형내 오염물질의 대기확산 풍동실험 I I. 산지지형 실험의 Gaussian 모델링

  • 김영성 (한국과학기술연구원, 130-653 서울 청량 사서함 131호) ;
  • 경남호 (한국에너지기술연구소, 305-343 대전 대덕연구단지 사서함 5호)
  • Published : 1995.06.01
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Abstract

Predictability of a Gaussian model, ISCST2 was assessed by scaling up wind tunnel experiments with a 1/3,000 terrain model to the real scale. Concentration profiles obtained from the flat-terrain experiment in the neutral condition were estimated to be in agreement with the calculated ones from ISCST2 in the stability class A, but the difference between the two was still large. Concentration profiles from the mountainous-terrain experiments were better fitted to the calculated ones primarily because in the experiment, concentration behind the source was raised due to the effect of a hill in the upstream side. Model prediction was improved with including the downwash effect of buildings and the hill, but overall concentration profiles were not much different from a typical Gaussian profile. While concentration profiles in the experiments were changed with local flows by varying the wind direction and the topography, those from the Gaussian modeling were mot freely changed together with these variations.

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References

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