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고민욱 ( M W Ko ),오창보 ( C B Oh ),한용식 ( Ys Han ),최병일 ( B I Choi ),도규형 ( K H Do ),김명배 ( M B Kim ),김태훈 ( T H Kim ) 한국안전학회(구 한국산업안전학회) 2015 한국안전학회지 Vol.30 No.1
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 Dynamics Simulator (FDS) based on the LES. The accident area was modeled three-dimensionally and time-varying boundary conditions for wind were adopted in the simulation for considering the realistic accident conditions. The Message Passing Interface (MPI) parallel computation technique was used to reduce the computational time. As a result, it was found that the present LES simulation could predict the unsteady dispersion features of HF near the accident area effectively. The dispersion behaviors of the leaked HF was much affected by the unsteady wind direction. The LES could predict the time variation of the HF concentration reasonably and give an useful information for the risk analysis while the prediction with the time-averaging concept of HF concentration had a limitation for the amount of HF concentration at specific location point. It was identified that the LES is very useful to predict the dispersion characteristics of hazardous chemicals
고속선로상 긴급상황지원을 위한 GIS기반 정보제공시스템 개발에 관한 연구
왕종배(J.B.Wang),홍선호(S.H.Hong),박옥정(O.J Park),김명배(M.B. Kim) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
In this paper various information D/B on track and facilities, electric/communication equipment and safety equipment required to support the emergencies related to high-speed railway was implemented, the practical local information in the proximity of high-speed line was identified by drawing the roads accessible to the track on the numerical map, and the development and the application of the information providing system based on GIS for the purpose of emergency response and its support, which can be helpful to request the external organizations such as local authorities, police offices and fire brigades for the emergencies, was proceed.