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A Numerical Study of Heat and Mass Transfer Model of LII for Nanoscale Soot Particles

나노크기의 매연입자에 대한 LII의 열-물질 전달 모델에 관한 수치적 연구

  • 김규보 (부산대학교 기계공학과 대학원) ;
  • 심재영 (부산대학교 기계공학과 대학원) ;
  • 장영준 (부산대학교 기계공학부 기계기술연구소) ;
  • 전충환 (부산대학교 기계공학부 기계기술연구소)
  • Published : 2007.07.01

Abstract

As increasing interest for soot emission. etc in combustion systems, various studies are being carried out for the reduction and measurement techniques of soot. Especially, laser induced incandescence is the useful measurement technique which has distinguished spatial and temporal resolution for primary particle size, volume fraction and aggregated particle size etc. Time resolved laser induced incandescence is the technique for measuring primary particle size that is decided to solve the signal decay rate which is related to the cooling behavior of heated particle by pulsed laser. The cooling behavior of heated particle is able to represent the heat and mass transfer model which are involved constants of soot property for surround gas temperature on the our previous work. In this study, it is applied to the time-dependence thermodynamic properties for soot temperature instead of constants of soot property for surround gas temperature and compared two different model results.

Keywords

References

  1. Melton, L. A., 1984, 'Soot Diagnostics Based on Laser Heating,' Applied Optics, Vol. 23, No.13, pp. 2201-2208 https://doi.org/10.1364/AO.23.002201
  2. Roth, P. and Filippov, A. V., 1996, 'In Situ Untrafine Particle Sizing by a Combination of Pulsed Laser Heatup and Particle Thermal Emission,' J. Aerosol Sci., Vol. 27, pp. 95-104 https://doi.org/10.1016/0021-8502(95)00531-5
  3. Eckbreth, A. C. 1977, 'Effects of Laser Modulated Particle Incandescence on Raman Scattering Diagnostics,' J. Appl. Phys., Vol. 48, pp. 4473-4479 https://doi.org/10.1364/AO.23.002209
  4. Dasch, C. J., 1984, 'Continuous-Wave Probe Laser Investigation of Laser Vaporization of Small Soot Particles in a flame,' Appl. Optics, Vol. 23, pp. 2209-2215 https://doi.org/10.1016/0010-2180(94)90029-9
  5. Hefeldt, L. D., 1993, 'Real-Time Soot Concentration Measurement Technique for Engine Exhaust Streams,' SAE technical paper, 930075
  6. Quey, B., Lee, T. W., Ni, T. and Santoro, R. J., 1994, 'Spatially Resolved Measurements of Soot Volume Fraction Using LII,' Combust. and Flame, Vol. 97, pp 384-392 https://doi.org/10.1016/0010-2180(94)90029-9
  7. Ni, T., Pinson, J. A., Gupta, S. and Santora, R. J., 1995, '2-Dimensional Imaging of Soot Volume Fraction by the Use of LII,' Applied Optics, Vol. 34, pp 7073-7091
  8. Lee, J. Ho., Kim, J. Y., Jeong, D. S., Jeon, C. H. and Chang, Y. J., 2005, 'Numerical Investigation on Soot Primary Particle Size Using Time Resolved Laser Induced Incandescence (TIRE-LII),' Journal of the Korea Society of Mechanical Engineers, B, Vol. 29, No. 9, pp. 1022-1031
  9. Fried, L. E., Howard, W. M., 2000, 'Explicit Gibbs Free Energy Equation of State Applied to the Carbon Phase Diagram,' Physical Review, B61, pp. 8734-8743 https://doi.org/10.1103/PhysRevB.61.8734
  10. Bladh, H., Bengtsson, P. E., 2004, 'Characteristics of Laser-Induced Incandescence from Soot in Studies of a Time-Dependent Heat- and Mass-Transfer Model,' Applied Physics, B 78, pp. 241-248 https://doi.org/10.1007/s00340-003-1362-9
  11. Snelling, D. R., Liu, F., Smallwood, G. J. and Gulder, O. L., 2000, 'Evaluation of the Nanoscale Heat and Mass Transfer Model of LII : Prediction of the Excitation Intensity,' NHTC 2000-12132, Proceeding of the NHTC 2000, 34th National Heat Transfer Conference, Pittsburgh, PA
  12. Schittkowski, T., Mewes, B. and Brüggemanm, D., 2002, 'Laser-Induced Incandescence and Raman Measurements in Sooting Methane and Ethylene Flames,' Phys. Chem. Chem. Phys., 4, pp. 2063-2071 https://doi.org/10.1039/b111335f
  13. Smallwood, G. J., Snelling, D. R., Liu, F. and Guilder,,O. L., 2000, 'Clouds Over Soot Evaporation : Errors in Modeling Laser-Induced Incandescence of soot,' Journal of Heat Transfer, ASME, Vol. 123, pp.814-818 https://doi.org/10.1115/1.1370507
  14. Kim, G. B., Cho, S. W., Lee, J. H., Jeong, D. S., Chang, Y. J. and Jeon, C. H., 2006, 'Study on Soot Primary Particle Size Measurement in Ethylene Diffusion Flame by Time-Resolved Laser Induced Incandescence,' KSME B, Vol. 30, No. 10, pp. 973-981 https://doi.org/10.3795/KSME-B.2006.30.10.973
  15. Will, S., Schraml, S. and Leipertz, A., 1996, 'Comprehensive Two-Dimensional Soot Diagnostics Based on Laser-Induced Incandescence (LII),' Proc. Combust. Instit., Vol. 26, pp. 2277-2284
  16. Eom, G. S., Park, C. W., Shin, Y. H., Chung, K. H., Park, S., Choe, W. and Hahn, J. W., 2003, 'Size Determination of Nanoparticles in Low-Pressure Plasma with Laser-Induced Incandescence Technique,' Appl. Phys. letters, Vol. 83, No. 6, pp. 1261-1263 https://doi.org/10.1063/1.1599965