한국화재소방학회논문지 (Fire Science and Engineering)

  • 제28권4호
  • /
  • Pages.29-34
  • /
  • 2014
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  • 2765-060X(pISSN)
  • /
  • 2765-088X(eISSN)
한국화재소방학회 (Korean Institute of Fire Science and Engineering)
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구획 화재의 상사 법칙 유효성에 관한 수치해석 연구

Numerical Study on the Validity of Scaling Law for Compartment Fires

  • 고권현 (동양대학교 건축소방행정학과)
  • Ko, Gwon-Hyun (Dept. of Architecture and Fire Protection Administration, Dongyang Univ.)
  • 투고 : 2014.05.09
  • 심사 : 2014.08.14
  • 발행 : 2014.08.31
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초록

본 연구에서는 구획화재의 연구에 적용되는 환기 변수에 근거한 상사 법칙의 유효성을 평가하기 위해 실규모 및 2/5 축소 구획에 대한 화재를 FDS를 이용하여 모사하고 기존의 실험 및 해석 결과간의 상호 비교 분석을 수행하였다. 상층부 주요 위치에서의 온도에 대한 실험 결과를 근거로 수치해석 모델의 유효성을 확보하였다. 구획 내부의 온도 및 농도 분포와 구획 출구에서의 속도 분포 등에 대한 다양한 특성에 대한 분석을 통해 축소 법칙의 유효성을 평가하였다. 실규모 및 축소 구획에 대한 화재 해석 결과를 비교할 때, 구획 내부 유동 형태 및 화염의 분출 거동, 구획 내부 수직 온도 분포 등의 특성에 대해서 유사한 결과를 보여주었다.

In this study, to assess the validity of scaling law which was based on the ventilation factor and utilized in fields of compartment fires, numerical simulations were conducted on full- and 2/5 reduced-scale compartment fires using FDS and simulation results were compared with the previously published experimental data. The numerical modeling used in this study was verified by comparing the predicted temperature at several points of the upper layer with the experiment data. Temperature and concentration distribution inside of compartments and velocity profile at door of compartment are analyzed to assess the validity of scaling law. Comparison between the predicted results on the full- and reduced-scale compartments shows good agreements on the inner compartment flow patterns, outflowing flame patterns from the compartments, and vertical temperature distributions.

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참고문헌

  1. J. Q. Quintiere, W. J. Rinkinen and W. W. Jones, "The Effect of Room Opening on Fire Plume Entrainment", Combustion Science and Technology, Vol. 26, pp. 193-201 (1981). https://doi.org/10.1080/00102208108946960
  2. C. L. Beyler, "Major Species Production by Diffusion Flames in a Two-Layer Compartment Fire Environment", Fire Safety Journal, Vol. 10, pp. 47-56 (1986). https://doi.org/10.1016/0379-7112(86)90031-7
  3. W. M. Pitts, "The Global Equivalence Ratio Concept and the Formation Mechanism of Carbon Monoxide in Enclosure Fire", Progress in Energy and Combustion Science, Vol. 21, pp. 197-237 (1995). https://doi.org/10.1016/0360-1285(95)00004-2
  4. P. Blomqvisf and A. Lonnermark, "Characterization of the Combustion Products in Large-Scale Fire Tests; Comparison of Three Experimental Configurations", Fire and Materials, Vol. 25, pp. 71-81 (2001). https://doi.org/10.1002/fam.761
  5. R. G. Gann, J. D. Averill, E. L. Johnsson, M. R. Nyden and R. D. Peacock, "Smoke Compartment Yields from Room-Scale Fire Tests", NIST TN 1453, NIST (2003).
  6. G. H. Ko, "Prediction Performance of FDS on the Carbon Monoxide Production in the Under-Ventilated Fires", Journal of Korean Institute of Fire Science & Engineering, Vol. 25, No. 5, pp. 93-99 (2011).
  7. G. H. Ko and C. H. Hwang, "Mixture Fraction Analysis on the Combustion Gases of the Full-Scale Compartment Fires", Journal of Korean Institute of Fire Science & Engineering, Vol. 24, No. 5 pp. 128-135 (2010).
  8. W. D. Walton and P. H. Thomas, "Estimating Temperatures in Compartment Fires", Section 3, SFPE Handbook of Fire Protection Engineering, 2002.
  9. W. M. Pitts, N. P. Bryner and E. L. Jonhsson, "Combustion Product Fromation in Under and Overventilated Full-Scale Enclosure Fires", Proceedings of Combustion Fundamentals and Applications, pp. 565-570 (1995).
  10. N. P. Bryner, E. L. Johnsson and W. M. Pitts, "Carbon Monoxide Production in Compartment Fires - Reduced- Scale Enclosure Test Facility", NIST IR 5568, NIST (1994).
  11. K. B. McGrattan, S. Hostikka, J. E. Floyd, H. R. Baum and R. G. Rehm, "Fire Dynamics Simulator (Version 5), Technical Reference Guide", NIST SP 1018-5, NIST (2007).
  12. M. Bundy, A. Hamins, E. L. Johnsson, S. C. Kim, G. H. Ko and D. B. Lenhert "Measurements of Heat and Combustion Products in Reduced-Scale Ventilation-Limited Compartment Fires", NIST TN 1483, NIST (2007).