Browse > Article

A Numerical Study of an Effect of the Aspect Ratio on Smoke Movement in funnel Fires  

이성룡 (중앙대학교 기계공학부 대학원)
김충익 (중앙대학교 기계공학)
유홍선 (중앙대학교 기계공학부)
Publication Information
Fire Science and Engineering / v.18, no.2, 2004 , pp. 1-6 More about this Journal
Abstract
In this study, numerical simulations were conducted to analyze an effect of the aspect ratio on smoke movement in tunnel fires using FDS 3.0. It was confirmed an application for tunnel fires in comparison with experimental results. The results showed relatively good agreement with experimental data within 1$0^{\circ}C$. Clear height of CFD by velocity distribution was about 3% higher than that of experiment. Smoke movement was confirmed by the analysis of temperature and velocity field. Results from variation of the aspect ratio showed good agreement with experimental data. The temperature at the vicinity of the fire source became lowly with the increase of the aspect ratio. But, decrease rate of the temperature was reduced by the decrease of the heat loss to the width direction.
Keywords
Tunnel fire; Aspect ratio; LES; Smoke movement;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Massachusettes Highway Department and Federal Highway Administration, 'Memorial Tunnel Fire Ventilation Program Report', USA(1999)
2 R. J. Bettis, S. F. Jagger, A. J. R. Macmillan, and R. T. Hambleton, 'Interim Validation of Tunnel Fire Consequence Models; Summary of Phase 1 Tests', The Health and Safety Laboratory Report IR/L/FR/94/2, The Health and Safety Executive, UK(1994)
3 Y. Wu and M. Z. A. Bakar, 'Control of Smoke Flow in Tunnel Fires Using Longitudinal Ventilation Systems - A Study of the Critical Velocity', Fire Safety Journal, Vol. 35, pp.363-390(2000)   DOI   ScienceOn
4 W. K. Chow, 'Simulation of Tunnel Fires Using a Zone Model', Tunnelling and Underground Space Technology, Vol. 11, No.2, pp.221-236(1996)   DOI   ScienceOn
5 P. J. Woodburn and R. E. Britter, 'CFD Simulations of a Tunnel Fire-Part ll', Fire Safety Journal, Vol. 26, pp.63-90(1996)   DOI   ScienceOn
6 D. Tetzner, R. Pollak, W. Foit, and M. Sippel, 'Critical Velocity - Comparative Assessment of Test Results and CFD Simulation', Proceedings of the 1st International Conference on Tunnel Fires and One Day Seminar on Escape from Tunnel, Lyon, France, pp.181-190(1999)
7 R. J. Bettis, S. F. Jagger, and Y. Wu, 'Interim Validation of Tunnel Fire Consequence Models; Summary of Phase 2 Tests', The Health and Safety Laboratory Report IR/L/FR/93/11, The Health and Safety Executive, UK(1993)
8 Y. Oka and G. T. Atkinson, 'Control of Smoke Flow in Tunnel Fires', Fire Safety Journal, Vol. 25, pp.305-322(1996)   ScienceOn
9 P. J. Woodburn and R. E. Britter, 'CFD Simulations of a Tunnel Fire-Part I', Fire Safety Journal, Vol. 26, pp.35-62(1996)   DOI   ScienceOn
10 W. Zhang, A. Hamer, M. Klassem, D. Carpenter, and R. Roby, 'Turbulence Statics in a Fire Room Model by Large Eddy Simulation', Fire Safety Journal, Vol. 37, pp.721-572(2002)   DOI   ScienceOn
11 이성룡, 유홍선, 김충익, '터널 화재시 터널 단면의 종횡비에 따른 연기 거동에 관한 실험적 연구', 대한기계학회 추계학술대회 논문집, pp.115-120(2003)
12 B. Ribot and P. Chasse, "Numerical Simulations of Smoke Extraction by Roof Vents in a Tunnel: Comparison with Experimental Tests Analysis of Physical Phenomena", Proceedings of the 1st International Conference on Tunnel Fires and One Day Seminar on Escape from Tunnels, Lyon, France, pp.169-179 (1999).