Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Prediction of Explosion Risk for Natural Gas Facilities using Computational Fluid Dynamics (CFD)

전산유체역학시뮬레이션을 이용한 도시가스 설비의 폭발위험성 예측

  • Han, Sangil (Department of Chemical Engineering, Changwon National University) ;
  • Lee, Dongwook (School of Chemical & biomolecular Engineering, Pusan National University) ;
  • Hwang, Kyu-Suk (School of Chemical & biomolecular Engineering, Pusan National University)
  • 한상일 (창원대학교 화공시스템공학과) ;
  • 이동욱 (부산대학교 화공생명공학부) ;
  • 황규석 (부산대학교 화공생명공학부)
  • Received : 2018.06.25
  • Accepted : 2018.09.18
  • Published : 2018.09.30
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Abstract

City natural gas is classified flammable hazardous gas and should be secured according to explosion risk assessment determined by Industrial Standard KS C IEC. In this study, leak size, ventilation grade and effectiveness were adopted to the KS C IEC for risk assessment in natural gas supply system. To evaluate the applicability of the computational fluid dynamics (CFD), the risk assessment was studied for four different conditions using hypothetical volume($V_z$) valuesfrom gas leak experiments, KS C IEC calculation, and CFD simulation.

산업현장과 열병합발전 등 다양한 장소에 사용되는 도시가스는 산업안전보건법 정의에 따라 인화성 가스에 해당되며 한국산업표준 KS C IEC에 의해 가스 폭발위험장소가 설정되어 안전하게 관리가 되어야 한다. 본 연구에서는 일반 화학공장에 적용되는 KS C IEC 표준을 저압 도시가스 사용설비 폭발위험성 예측에 합리적으로 적용하기 위해누출공 크기, 환기 등급, 환기 유효성 등의 주요 변수를 도입하였다.CFD 시뮬레이션 적용의 타당성을 평가하기 위해 전산유체역학 (CFD) 시뮬레이션, 가스누출실험, KS C IEC 표준 계산 통해 얻어진 폭발하한계가상 체적을 이용하여 네 가지 다른 조건에서 폭발 위험성을 평가하였다.

Keywords

References

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  1. 전산유체역학을 이용한 화학공정 수소가스 누출 사고 시뮬레이션 vol.36, pp.4, 2018, https://doi.org/10.12925/jkocs.2019.36.4.1080