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http://dx.doi.org/10.7731/KIFSE.2014.28.3.020

Effect of Radiation Models on the Suppression Limits in Counterflow Methane/Air Diffusion Flames  

Mun, Sun-Yeo (Department of Fire & Disaster Prevention, Daejeon University)
Cho, Jae-Ho (Department of Fire & Disaster Prevention, Daejeon University)
Hwang, Cheol-Hong (Department of Fire & Disaster Prevention, Daejeon University)
Oh, Chang Bo (Department of Safety Engineering, Pukyong National University)
Park, Won-Hee (Korea Railroad Research Institute)
Publication Information
Fire Science and Engineering / v.28, no.3, 2014 , pp. 20-28 More about this Journal
Abstract
Effect of radiation models on the suppression limits in counterflow $CH_4$/air diffusion flame was numerically investigated with fundamental experiments for the numerical validation. $N_2$ and $CO_2$ were considered as extinguishing agents. The differences in extinguishing concentration between OTM and SNB radiation models which have different accuracy levels were examined. As a result, there is no considerable difference in extinguishing concentration for the $N_2$ dilution as the radiation models with different accuracy levels were used. As the $CO_2$ having strong radiative effect was diluted in the low strain flames, however, the radiation model with high predictive accuracy such as SNB should be used. In particular, the $CO_2$ dilution in fuel stream leads to the significant difference in extinguishing concentration between OTM and SNB models. Therefore, it is necessary that the radiation model should be reasonably chosen with the consideration of numerical accuracy and computational time for the prediction of extinguishing concentration.
Keywords
Counterflow diffusion flame; Extinguishing concentration; Suppression limit; Radiation model;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 S.-Y. Mun, C.-H Park, C.-H. Hwang and C. B. Oh, "A Numerical Study on the Extinguishing Effects of $CO_2$ in Counterflow Diffusion Flames with the Concept of Local Application System", Journal of Korean Institute of Fire Science Engineering, Vol. 26, No. 4, pp. 55-62 (2012).   과학기술학회마을   DOI   ScienceOn
2 H.-H. Lee, C. B. Oh and C.-H. Hwang, "$CO_2$ Suppression Characteristics of the Nitrogen-diluted Methane Counterflow Non-premixed Flame", Journal of Korean Society of Safety, Vol. 28, No. 2, pp. 42-48 (2013).   과학기술학회마을   DOI   ScienceOn
3 J. S. T'ien, "Diffusion Flame Extinction at Small Stretch Rates: The Mechanism of Radiative Loss", Combustion and Flame, Vol. 65, No. 1, pp. 31-34 (1986).   DOI   ScienceOn
4 K. Maruta, M. Yoshida, H. Guo, Y. Ju and T. Niioka, "Extinction of Low-stretched Diffusion Flame in Microgravity", Combustion and Flame, Vol. 112, No. 1-2, pp. 181-187 (1998).   DOI   ScienceOn
5 W.-H. Park, "Study on the Radiative Transfer Characteristics by Nongray Gas Mixtures and Application on Combustion Systems", Ph.D. Dissertation, Chung-Ang University (2003).
6 W.-H. Park, D.-H. Kim, M.-H. Shin and T.-K. Kim, "Comparison of Different Radiative Gas Property Models for One-dimensional Premixed Opposed Flames", p. 114, The Third National Congress on Fluids Engineering, Jeju, Korea (2004).
7 W. L. Godson, "The Evaluation of Infra-red Radiation Fluxes due to Atmospheric Water Vapor", Quarterly Journal of the Royal Meteorological Society, Vol. 79, pp. 367-379 (1953).   DOI
8 C. B. Ludwig, W. Malkmus, J. E. Readon and A. L. Thompson, "Handbook of Infrared Radiation from Combustion Gas", NASA SP-3080, Scientific and Technical Information Office, Washington D.C. (1973).
9 A. Soufiani and J. Taine, "High Temperature Gas Radiative Property Parameters of Statistical Narrow-band Model for $H_2O$, $CO_2$ and CO and correlated-K model for $H_2O$ and $CO_2$", International Journal of Heat and Mass Transfer, Vol. 40, No. 4, pp. 987-991 (1997).   DOI   ScienceOn
10 C. B. Oh, A. Hamins, M. Bundy and J. Park, "The Twodimensional Structure of Low Strain Rate Counterflow Nonpremixed Methane Flames in Normal and Microgravity", Combustion Theory and Modelling, Vol. 12, No. 2, pp. 283-302 (2008).   DOI   ScienceOn
11 R. J. Kee, F. M. Rupley and J. A. Miller, "A Fortran Chemical Kinetic Package for The Analysis of Gas Phase Chemical Kinetics", SAND 89-8009B (1989).
12 M. Bundy, A. Hamins and K. Y. Lee, "Suppression Limits of Low Strain Rate Nonpremixed Mixed Methane Flames", Combustion and Flame, Vol. 133, No. 3, pp. 299-310 (2003).   DOI   ScienceOn
13 C. B. Oh, E. J. Lee and J. Park, "Effects of the Burner Diameter on the Flame Structure and Extinction Limit of Counterflow Nonpremixed Flames", International Journal of Spray and Combustion Dynamics, Vol. 2, No. 3, pp. 199-218 (2010).   DOI
14 R. J. Kee, G. Dixon-Lewis, J. Warnatz, M. E. Coltrin and J. A. Miller, "A Fortran Computer Code Package for the Evaluation of Gas Phase Multicomponent Transport Properties", SAND86-8246 (1986).
15 A. E. Lutz, R. J Kee, J. F. Grcar and F. M. Rupley, "OPPDIF: A Fortran Program for Com- puting Opposedflow Diffusion Flame", SAND 96-8243 (1997).
16 C. T. Bowman, R. K. Hanson, D. F. Davidson, W. C. Gardiner, V. Lissianski, G. P. Smith, D. M. Golden, M. Frenklach and M. Goldenburg, http://www.me.berkeley.edu/ gri_mech/ (1999).
17 Y. Ju, H. Guo, K. Maruta and F. Liu, "On the Extinction Limit and Flammability Limit of Nonadiabatic Stretched Methane-air Premixed Flames", Journal of Fluid Mechanics, Vol. 342, pp. 315-334 (1997).   DOI   ScienceOn
18 H. Bedir, J. S. T'ien and H. S. Lee, "Comparison of Different Radiation Treatments for a One-dimensional Diffusion Flame", Combustion Theory and Modelling, Vol. 1, No. 4, pp. 395-404 (1997).   DOI