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종단부 유속조건 변화에 따른 철도터널 내 정상상태 화재유동해석
이동찬(D.C. Lee),이덕희(D.H. Lee),정우성(W.S. Jung),박서현(S.H. Park) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.5
In this study CFD(Computational Fluid Dynamics) analysis of the steady fire-driven fluid flow for the performance test of ventilation at railway tunnel between Heuksok and Nodeul Station from Seoul Metro 9 is performed. There were fans with exhaust and intake modes and each was installed at the middle and both ends of the tunnel. For this test, the pool fire source of methyl alcohol with 1.5MW and smoke generators were installed between the middle of tunnel and Heuksok Station. In this test, the smoke behavior from natural convection was observed for 10 minutes from the ignition of pool fire and then fans with intake-modes at both sides of Heuksok Station and exhaust-modes at the middle of tunnel and nearby Nodeul station were operated. In the analysis, the effect of fan-on with intake mode located in the opposite side of the tunnel nearby Heuksok Station on fire-driven fluid flow is studied on when the boundary conditions of fan-on at the tunnel between Heuksok and Nodeul Station are the same as test. FLUENT, a commercial CFD code, is used for this analysis.
충돌 성능 향상을 위한 Aluminum 측면부재 설계의 고찰
김창수(C.S.KIM),이용래(Y.R.LEE),정태은(T.E.CHUNG),이동찬(D.C.LEE) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.6_2
From the viewpoint of the crashworthiness, the side member of aluminum spaceframe plays a great important role in frontal crash. In order to improve the crashworthiness, this paper introduces a bead and suggests the design parameters of bead through the buckling and crash analysis.<br/>