Journal of the Korean Institute of Gas (한국가스학회지)
- Volume 7 Issue 4 Serial No. 21
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- Pages.24-29
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- 2003
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- 1226-8402(pISSN)
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- 2713-6922(eISSN)
A study on the analysis of domestic gas explosion
실내가스폭발 해석에 관한 연구
- Kim Sang Sub (Institute of Gas Safety Technology, Korea Gas Safety Corporation) ;
- Cha Jae Ou (Department of Mechanical Engineering, Inha University)
- Published : 2003.12.01
Abstract
Numerical analysis was conducted to predict the damage of indoor gas explosion for the propagation of explosion flame. Indoor gas diffusion distribution due to gas leakage was obtained by diffusion equation that adopted initial conditions from reference. Enthalpy of each gas-mixture ratio and reduced mechanism was applied to calculate flame temperature, and laminar combustion velocities with the variant of each gas concentration from reference were applied to the gas mixture. Turbulent combustion velocity was modeled by coupling of turbulent energy and laminar combustion velocity in k-
실내에서 가스 폭발시 피해를 예측하기 위해서 폭발 화염면의 전파를 수치해석을 통해 해석했다. 확산방정식에 의해 가스누출에 의한 실내의 가스확산분포를 구했으며, 문헌에서 선택한 누출의 초기조건을 사용했다. 화염온도를 계산하기 위해 각 가스 혼합비에 따른 엔탈피와 화학식에 대한 reduced mechanism을 사용했으며 문헌에서 찾은 각 가스의 농도 별 층류 연소속도를 혼합가스의 층류연소속도에 적용시켰다. k-