불산의 비정상 확산거동 예측을 위한 대와동모사 (Large Eddy Simulation for the Prediction of Unsteady Dispersion Behavior of Hydrogen Fluoride)

서지정보

· 발행기관 : 한국안전학회
· 수록지 정보 : 한국안전학회지 / 30권 / 1호 / 14 ~ 20페이지
· 저자명 : 고민욱, 오창보, 한용식, 최병일, 도규형, 김명배, 김태훈

초록

A Large Eddy Simulation(LES) was performed for the prediction of unsteady dispersion behavior of hydrogen fluoride (HF).
The HF leakage accident occurred at the Gumi fourth industrial complex was numerically investigated using the Fire DynamicsSimulator (FDS) based on the LES. The accident area was modeled three-dimensionally and time-varying boundary conditions for windwere adopted in the simulation for considering the realistic accident conditions. The Message Passing Interface (MPI) parallelcomputation technique was used to reduce the computational time. As a result, it was found that the present LES simulation could predictthe unsteady dispersion features of HF near the accident area effectively. The dispersion behaviors of the leaked HF was much affectedby the unsteady wind direction. The LES could predict the time variation of the HF concentration reasonably and give an usefulinformation for the risk analysis while the prediction with the time-averaging concept of HF concentration had a limitation for the amountof HF concentration at specific location point. It was identified that the LES is very useful to predict the dispersion characteristics ofhazardous chemicals

영어초록

A Large Eddy Simulation(LES) was performed for the prediction of unsteady dispersion behavior of hydrogen fluoride (HF).
The HF leakage accident occurred at the Gumi fourth industrial complex was numerically investigated using the Fire DynamicsSimulator (FDS) based on the LES. The accident area was modeled three-dimensionally and time-varying boundary conditions for windwere adopted in the simulation for considering the realistic accident conditions. The Message Passing Interface (MPI) parallelcomputation technique was used to reduce the computational time. As a result, it was found that the present LES simulation could predictthe unsteady dispersion features of HF near the accident area effectively. The dispersion behaviors of the leaked HF was much affectedby the unsteady wind direction. The LES could predict the time variation of the HF concentration reasonably and give an usefulinformation for the risk analysis while the prediction with the time-averaging concept of HF concentration had a limitation for the amountof HF concentration at specific location point. It was identified that the LES is very useful to predict the dispersion characteristics ofhazardous chemicals

참고자료

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