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Mixture Fraction Analysis on the Combustion Gases of the Full-Scale Compartment Fires  

Ko, Gwon-Hyun (동양대학교 건축소방행정학과)
Hwang, Cheol-Hong (대전대학교 소방방재학과)
Publication Information
Fire Science and Engineering / v.24, no.5, 2010 , pp. 128-135 More about this Journal
Abstract
In this study, a mixture fraction analysis was performed to investigate the characteristics of chemical species production in compartment fires burning hydrocarbon fuels such as methane, heptane, and toluene. A series of fire experiments was conducted in the ISO 9705 standard room, and gas species concentration and soot fraction were measured at two locations in the upper layer of the compartment. The mass fractions of measured chemical species, such as unburned hydrocarbons (UHC), carbon monoxide (CO), carbon dioxide ($CO_2$), oxygen ($O_2$), and soot were presented as a function of mixture fraction and compared with state relationships based on the idealized reaction of hydrocarbon fuels. The mixture fraction analysis made it possible to rearrange hundreds of species measurements, which were done under various fire conditions and at two locations of the upper layer, in term of the unified parameter, i.e. the mixture fraction. The results also showed that inclusion of soot in the mixture fraction calculation could improve the performance of analysis, especially for the sooty fuels such as heptane and toluene.
Keywords
ISO 9705 room; Under-ventilated fires; Mixture fraction; Carbon monoxide; Soot;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 P. Blomqvis 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).   DOI   ScienceOn
2 G.H. Ko, A. Hamins, M. Bundy, E.L. Johnsson, S.C. Kim, and D.B. Lenhert, "Mixture Fraction Analysis of Combustion Products in the Upper Layer of Reduced-Scale Compartment Fires", Comb. Flame, Vol.156, pp.467-476(2009).   DOI   ScienceOn
3 N. Peters, "Laminar Diffusion Flamelet Models in Non-Premixed Turbulent Combustion", Prog. Ener. Comb. Sci., Vol.10, pp.319-339(1984).   DOI   ScienceOn
4 Y.R. Sivathanu and G.M. Faeth, "Generalized State Relationships for Scalar Propertes in Nonpremixed Hydrocarbon/Air Flames", Comb. Flame, Vol.82, pp.211-230(1990).   DOI   ScienceOn
5 A. Hamins and K. Seshadri, "The Structure of Diffusion Flames Burning Pure, Binary, and Ternary Solutions of Methanol, Heptane, and Toluene", Comb. Flame, Vol.68, pp.295-307(1987).   DOI   ScienceOn
6 J.E. Floyd, K.B. McGrattan, S. Hostikka, and H.R. Baum, "CFD Fire Simulation Using Mixture Fraction Combustion and Finite Volume Radiative Heat Transfer", J. Fire Protection Eng., Vol.13, pp.11-36 (2003).   DOI   ScienceOn
7 X. Zhou and S. Mahlingam, "A Suitable Mixture Fraction for Diffusion Flames of Wood Pyrolysis Gas", Comb. Flame, Vol.133, pp.197-199(2003).   DOI   ScienceOn
8 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).   DOI   ScienceOn
9 W.M. Pitts, "The Global Equivalence Ratio Concept and the Formation Mechanism of Carbon Monoxide in Enclosure Fire", Prog. Ener. Comb. Sci., Vol.21, pp.197-237(1995).   DOI   ScienceOn
10 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, Maryland(2003).
11 A. Lock, M. Bundy, E.L. Johnsson, A. Hamins, G.H. Ko, and C.H. Hwang, "Experimental Study of the Effects of Fuel Type, Fuel Distribution, and Vent Size on Full-Scale Underventilated Compartment Fires in an ISO 9705 Room", NIST TN 1603, NIST, MD (2007).
12 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, MD(2007).
13 K.B. McGrattan and A. Hamins, "Numerical Simulation of the Howard Street Tunnel Fire", Fire Technology, Vol.42, No.4, pp.273-281(2006).   DOI   ScienceOn
14 고권현, 김성찬, A. Hamins, 유홍선, "환기부족 구획 화재에 대한 FDS 해석 및 검증", 한국화재소방학회논문지, Vol.23, No.5, pp.103-109(2009).   과학기술학회마을
15 J.G. Quintiere, W.J. Rinkinen and W.W. Jones, "The Effect of Room Opening on Fire Plume Entrainment", Comb. Sci. Tech., Vol.26, pp.193-201(1981).   DOI   ScienceOn
16 R.W. Bilger, "Reaction Rates in Diffusion Flames", Combust. Sci., Vol.30, pp.277-284(1977).