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김동현(D. H. Kim),박원희(W. H. Park),장용준(J. Y. Jang),이한수(H. S. Lee),유홍선(H. S. Ryou),강중구(J. G. Kang),박정렬(J. Y. Park) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
The Korea Railroad Research Institute developed a fire control system for coaches using water mist. The fire control technology using water mist is used in the fire control system embedded in coaches developed through research. Such environment-friendly, automatic fire-extinguishing device is also economical because the amount used is significantly less than that of the existing sprinkler system. The paper introduces the developed fire control system and fire control performance tests using such system.
김동운(K.W. Kim),박원희(W.H. Park),김치훈(C.H. Kim),정우성(W.S. Jung),이덕희(D.H. Lee) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.5
In this study, fire behavior for subway coach fire in the 1/10 reduced scale model is analyzed using numerical analysis method (FDS). The size of the reduced model coach is 1.9 m long, 0.290 m high and 0.235 m. The simulation is carried out only one-sided four doors of the coach are opened. A fire source is the n-heptane pool fire with a mean heat release rate 2.33 kW. Smoke temperature, heat release rate and mass loss rate for the model are calculated.
화재모사전용 FDS code의 계산값을 이용하여 피난해석 BuildingEXODUS code의 피난의 환경조건 파일을 생성하는 프로그램(FDS2EXODUS) 개발
김학범(Kim, H.B.),장용준(Jang, Y.J.),정우성(Jung, W.S.),박원희(Park, W.H.),이덕희(Lee, D.H.) 한국화재소방학회 2009 한국화재소방학회 학술대회 논문집 Vol.2009 No.춘계
본 논문에서는 피난해석에 사용되는 BuildingEXODUS code의 HAZARD에 피난의 환경 조건으로서 화재모사전용 FDS code의 계산결과를 직접 피난의 환경조건으로 생성하는 프로그램 개발 내용을 다루었다. 계산결과의 변환과정에는 수치기법이 적용되었으며, FDS의 Single Block 또는 Multi-Block Meshes에도 적용이 가능하도록 하였다. 본 프로그램의 개발로 피난해석 수행 시 대규모의 화재해석데이터의 입력의 편리성을 높이고, 화재에 대한 피난 해석 과정을 단축하게 되었다. In this paper shows the development of the Program(FDS2EXODUS) for Generating Hazard condition file of BuildingEXODUS code based on the FDS Fire-simulation Data. The program were applied with numerical method to translate from FDS to BuildingEXODUS. Using both single or multi block meshes of FDS get to be possible. For application of fire effect, the fire data were loaded directly to BuildingEXODUS in the case of FDS code with using this Program(FDS2EXODUS). It was very convenient to input to BuildingEXODUS and could be reduced the procedure of egress simulation from fire disaster.
LES(FDS code)기법 및 RANS의 난류모델을 사용한 터널화재 유동 전산모사의 비교 고찰
김학범(H.B. Kim),장용준(Y.J. Jang),정우성(W.S. Jung),박원희(W.H. Park) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
In this study, comparative analyzing on the tunnel-fire driven flow is performed using numerical simulation with LES and RANS method. FDS code is employed to calculate turbulent flow for LES and SMARTFIRE code for RANS. C. C. Hwang[1,2]'s experimental results of scaling tunnel fire are employed to compare with the numerical simulation. The Geometric dimension of tunnel is 5.4m(L) × 0.4m(W) × 0.3m(H). HRR of fire is 3.3kW and ventilation-velocity is 0.33m/s in the scaling tunnel. Applied models to simulation with FDS code are Smagorinsky model for viscosity, Mixture Fraction for combustion and FVM for radiation. Modified k- model is applied for turbulence, the Mixture ε Fraction for combustion and Six-Flux for radiation in SMARTFIRE code. Methane is used as the main fuel of natural gas in the both code. Non-Scattering gas are assumed for radiation transport. The variously dense grid-distributions are studied in the simulation results.