Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Experimental and Numerical Investigations on Detailed Methane Reaction Mechanisms in Oxygen Enriched Conditions

산소부화조건의 메탄 상세반응기구에 대한 실험 및 수치해석 연구

  • 한지웅 (인하대학교 대학원 기계공학과) ;
  • 이창언 (인하대학교 기계공학과)
  • Published : 2004.02.01
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Abstract

The burning velocities of conventional and oxygen-enriched methane flame in various equivalence ratio were determined by experiments. The validity of existing reaction mechanisms was examined in oxygen-enriched flame on the basis of the experiment results. Modified reaction mechanism is suggested, which was able to predict burning velocity of oxygen enriched flame as well as methane-air flame. Complementary study on reaction mechanisms shows the following results : Present experiment data were found to be more reliable in comparison with existing ones in a oxygen-enrichment condition. It was found that some modification in existing reaction mechanisms is necessary, since discrepancy between measurements and predictions is increasing with oxygen enrichment ratio. The sensitivity analysis was performed to discriminate the dominantly affecting reactions on the burning velocity in various oxygen enrichment and equivalence ratio. A modified GRI 3.0 reaction mechanism based on our experiment results was suggested, in which reaction rate coefficients of (R38) H+O$_2$<=>O+OH in GRI 3.0 reaction mechanisms were corrected based on sensitivity analysis results. This mechanism showed a good agreement in predicting the burning velocity and number density of NO in oxygen-enriched flame and would provide proper reaction information of oxygen-enriched flame at this stage.

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References

  1. Charles E. and Baukal, Jr., 1998, Oxygen-Enhanced Combustion, CRC.
  2. Hedley, J. T., Pourkashanian, M., Williams, A. and Yap, L. T., 1995, 'NOx Formation in Large-Scale Oxy-Fuel Flames,' Combust. Sci. and Tech., Vol. 108, pp. 311-322 https://doi.org/10.1080/00102209508960404
  3. Han, J. W. and Lee, C. E., 2002, 'Numerical Study on Flame Structure and NO Formation Characteristics in Oxidizer-Controlled Diffusion Flames,' Transaction of the Korean Society of Mechanical Engineers, Vol. 26, No. 5, pp. 742-749 https://doi.org/10.3795/KSME-B.2002.26.5.742
  4. Sung, C. J. and Law, C. K., 1998, 'Dominant Chemistry and Physical Factors Affecting NO Formation and Control in Oxy-Fuel Burning,' Proceedings of the Combustion Institute, Vol. 27, pp. 1411-1418 https://doi.org/10.1016/S0082-0784(98)80547-X
  5. Lee, K. Y., Nam, T. H., You, H. S. and Choi, D. S., 2002, 'The Flame Structure of Freely Propagating $CH_4/O_2/N_2$ Premixed Flames on the $O_2$ Enrichment,' Transaction of the Korean Society of Mechanical Engineers, Vol. 26, No. 4, pp. 555-560 https://doi.org/10.3795/KSME-B.2002.26.4.555
  6. Jahn, G., 1934, 'Der Zundvorgang in Gasgemischen,' Ph. D. Thesis, Oldenbourg, Berlin
  7. Morgan, G. H. and Kane, W. R., 1953, 'Some Effects of Inert Diluents on Flame Speeds and Temperature,' Proceedings of the Combustion Institute, Vol. 4, pp. 313-320 https://doi.org/10.1016/S0082-0784(53)80041-X
  8. Murty Kanury, A., 1977, Introduction to Combustion Phenomena, Gordon and Breach Science Publishers
  9. Peters, N., and Rogg, B., 1993, Reduced Kinetic Mechanisms for Applications in Combustion Systems, Berlin: Springer-Verlag
  10. Sameer V. Naik, and Normand M. Laurendeau, 2002, 'Quantitative Laser-Saturated Fluorescence Measur ements of Nitric Oxide in Counter-Flow Diffusion Flames Under Sooting Oxy-Fuel Conditions,' Combustion Science and Technology, Vol. 129, pp. 112-119 https://doi.org/10.1016/S0010-2180(01)00364-9
  11. Morel, T., 1975, 'Comprehensive Design of Axisymmetric Wind Tunnel Contraction,' Journal of Fluid Engineering, pp. 225-233
  12. Stepen R. Turns, 2000, An Introduction to Combustion, 2nd ed., McGraw-Hill
  13. Kee, R. J., Grcar, J. F., Smooke, M. D. and Miller, J. A., 1994, 'A Fortran Program for Modeling Steady Laminar One-Dimensional Premixed Flame,' SAND 85-8240
  14. Miller & Bowman Mech. Web address : http://www.galcit.caltech.edu/EDL/mechanisms/library/library.html
  15. GRI Mech. Ver. 3.0, Web address : http://www.me.berkeley.edu/gri_mech/version30/text30.html
  16. Ju, Y., Guo, H., Maruta, K., Liu, F., 1997, 'On the Extinction Limit and Flammability Limit of Non-Adiabatic Stretched Methane-Air Premixed Flames,' J. Fluid Mech. Vol. 342, p. 315 https://doi.org/10.1017/S0022112097005636
  17. Kee, R. J., Rupley, F. M. and Miller, J. A., 1989, 'Chemkin-II: A Fortran Chemical Kinetics Package for the Analysis of Gas Phase Chemical Kinetics,' SAND 89-8009B
  18. Kee, R. J., Dixon-Lewis, G., Warnatz, J., Coltrin, M. E. and Miller, J. A., 1994, 'A Fortran Computer Code Package for the Evaluation of Gas-Phase Multi-Component Transport,' SAND86-8246
  19. Law, C. K., 'A Compilation of Experimental Data on Laminar Burning Velocities,' In:N. Peters and B. Rogg, Reduced Kinetic Mechanisms for Applications in Combustion Systems. Berlin:Springer-Verlag, pp. 15-26
  20. Lee, C. E., Oh, C. B., Jung, I. S. and Park, J. 2002, 'A Study on the Determination of Burning Velocities of LFG and LFG-Mixed Fuels,' Fuel, Vol. 81, pp. 1679-1686 https://doi.org/10.1016/S0016-2361(02)00049-2
  21. Yetter, R. A., Dryer, F. L. and Rabitz, H., 1991, 'A Comprehensive Reaction Mechanism for Carbon Monoxide/Hydrogen/Oxygen Kinetics,' Combustion Science and Technology, Vol. 79, pp. 97-128 https://doi.org/10.1080/00102209108951759