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

The Korean Society of Mechanical Engineers (대한기계학회)
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The Effects of N2 Diluent and Preheated Air on Soot Emission in Laminar Diffusion Flames

층류확산화염에서 질소 첨가와 예열온도가 매연 생성에 미치는 영향

  • 정용기 (부산대학교 대학원 기계공학과) ;
  • 이종호 (부산대학교 대학원 기계공학과) ;
  • 전충환 (부산대학교 기계공학부, 기계기술연구소) ;
  • 장영준 (부산대학교 기계공학부, 기계기술연구소)
  • Published : 2004.01.01
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Abstract

An study has been performed with axisymmetric coflow diffusion flames to investigate the influence of air-side fuel side dilution and initial preheated temperature on the soot formation in methan/air flames. Soot quantities are determined by using PLII(Planar Laser Induced Incandescence), such a $C_2$H$_2$ major species(CH$_4$, $O_2$, $N_2$) and temperature are simulated by chemkin code. The numerical analysis was performed with transport properties and detailed reaction mechanisms m axisymmetric coflow diffusion flames. The study of how flame temperature and $N_2$ dilution of air and fuel side influence the soot concentrations is focused. Soot concentrations results on PLII show that preheated temperature contributes to an increase in the soot volume fraction, and soot formation Is more productive to air side dilution than to fuel side dilution. $C_2$H$_2$ concentrations have a similar tendency to soot concentrations.

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References

  1. Miller, J. A. and Bowman, C.T., 1989, 'Mechanism and Modeling of Nitrogen Chemistry in Combustion,' Prog. Energy Combust. Sci., Vol. 15, pp. 287-338 https://doi.org/10.1016/0360-1285(89)90017-8
  2. Drake, Michael C., and Blint, Richard J., 1991, 'Relative Importance of Nitric Oxide Formation Mechanism in Laminar Opposed Flow Diffusion Flames,' Comb. and Flame, Vol. 83, pp. 185-203 https://doi.org/10.1016/0010-2180(91)90212-T
  3. Smooke, M.D., Em, A., Tanoff, M.A., Valdati, B. A., Mohammed, R. K. and Marran, D. F., 1996, 'Computational and Experimental Study of NO in an Axisymmetric Larminar Diffusion Flame,' 26th Symposium on combustion, pp. 2161-2170
  4. Glassman, I. and Yuccarino, P., 1981, 'The Temperature Effect in Sooting Diffusion Flames,' 18th Symposium on Combustion, pp. 1175-1183
  5. Wey, C., Powell, E. A. and Jagoda, J. I., 1984, 'The Effect of Temperature on the Sooting Behavior of Laminar Diffusion Flames,' Combustion Science and Technology, Vol. 41, pp. 173-190 https://doi.org/10.1080/00102208408923828
  6. Kermit C. Symth, Christopher R. Shaddix and David A. Everest, 1997, 'Aspects of Soot Dynamics as Revealed by Measurements of Broadband Fluorescence and Flame Luminosity in Flickering Diffusion Flames,' Comb. and Flame, Vol. 111, pp. 185-207 https://doi.org/10.1016/S0010-2180(97)00017-5
  7. Du, D. X., Axelbaum, R. L. and Law, C. K., 1995, 'Soot Formation in Strained Diffusion Flames Gaseous Additives,' Comb. and Flame, Vol. 102, pp. 11-20 https://doi.org/10.1016/0010-2180(95)00043-6
  8. Axelbaum, R. L. and Law. C. K., 1990, 'Soot Formation and Inert Addition in Diffusion Flames,' 23rd Symposium (Int.) on Combustion, pp. 1517-1523
  9. Guider, O. L., 1995, 'Effects of Oxygen on Soot Formation in Methane, Propane, and n-Butane Diffusion Flames,' Comb. and Flame, Vol. 101, pp. 302-310 https://doi.org/10.1016/0010-2180(94)00217-G
  10. Feese, J. J. and Turns, S. R., 1998, 'Nitric Oxide Emissions from Laminar Diffusion Flames:Effects of Air-Side versus Fuel-Side Diluent Addition,' Comb. and Flame, Vol. 113, pp.66-78 https://doi.org/10.1016/S0010-2180(97)00217-4
  11. Spalding, D. Brian, 1997, GENMIX: A General Computer Program for Two-dimensional Parabolic Phenomena
  12. Du, J. and Axelbaum, R. L. 1995, 'The Effect of Flame Structure on Soot Particle Inception in Diffusion Flames,' Comb. and Flame, Vol. 100, pp. 367-383 https://doi.org/10.1016/0010-2180(94)00136-G
  13. Eun, J. H., Lee, J. H., Jeon, C. H. and Chang, Y. J., 2002, 'Dilution and Thermal Effects of N2 Addition on soot Formation in co-flow Diffusion Flame,' 24th KOSCO SYMPOSIUM, pp. 185-191
  14. Ni, T., Pinson, J.A., Gupta, S. and Santoro, R. J., 1995, 'Two Dimensional Imaging of Soot Volume Fraction by the Use of Laser Induced Incandescence,' Applied Optics, Vol. 34, No. 30, pp. 7083-7091 https://doi.org/10.1364/AO.34.007083