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ISSN : 2288-9167(Print)
ISSN : 2288-923X(Online)
Journal of Odor and Indoor Environment Vol.14 No.2 pp.150-156
DOI : https://doi.org/10.15250/joie.2015.14.2.150

A study on the performance of a SST k-ω model for near field dispersion of odor from rooftop emissions

Ara Kim1,Sang Jin Jeong2*
1Department of Environmental and Energy Engineering, Graduate School, Kyonggi University
2Department of Environmental and Energy Engineering, Kyonggi University
*Corresponding author Tel : +82-31-249-9734 E-mail : sjjung@kyonggi.ac.kr
15 May 2015 15 June 2015 24 June 2015

Abstract

This paper presents the performance of a CFD model for the near field dispersion of odor from rooftop emissions.The FLUENT Shear-Stress Transport (SST hereinafter) k-ω turbulence model was used to simulate odor dispersionfrom a rooftop odor vent. The results were compared with a wind tunnel experiment and the calculated resultsof ASHRAE 2003 and 2007. The FLUENT SST k-ω turbulence model provided good results for makingreasonable predictions about the building rooftop surface normalized dilution. It was found that increasing the ventheight (from 1m to 7m) reduces rooftop surface normalized dilution. ASHRAE 2003 and ASHRAE 2007performance measures are generally not as good as FLUENT SST k-ω turbulence model performance measures,with larger MG (the geometric mean bias, VG (the geometric variance), NMSE (the normalized mean square error),FB (Fractional bias), and smaller FAC2 (the fraction of predictions within a factor of two of observations).

SST k-ω 모델의 옥상 배출구에서 배출되는 악취물질의 근거리 확산 모의 적용성에 대한 연구

김아라1,정상진2*
1경기대학교 대학원 환경에너지공학과
2경기대학교 환경에너지공학과

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