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

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Soot Primary Particle Size Measurement in Ethylene Diffusion Flame by Time-Resolved Laser-Induced Incandescence

시분해 레이저 유도 백열법을 이용한 에틸렌 확산 화염에서의 매연 일차입자크기 측정에 관한 연구

  • 김규보 (부산대학교 대학원 기계공학과) ;
  • 조승완 (부산대학교 대학원 기계공학과) ;
  • 이종호 (부산대학교 대학원 기계공학과) ;
  • 정동수 (한국기계연구원 엔진환경그룹) ;
  • 장영준 (부산대학교 기계공학부 기계기술연구소) ;
  • 전충환 (부산대학교 기계공학부 기계기술연구소)
  • Published : 2006.10.01
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Abstract

Recently there is an increasing interest in particulate matter emission because of new emission regulations, health awareness and environmental problems. It requires to improve particulate measurement techniques as well as to reduce soot emissions from combustion systems. As mentioned above, it is demanded that reduction techniques together with measurement techniques of exhausted particulate matters in combustion systems such as vehicles. However, measurement techniques of particulate matters should be prior to reduction techniques of that because it is able to know an increase and a decrease of exhausted particulate matters when measured particulate matters. Therefore, in this study, we report the measurement of soot primary-particle size using time-resolved laser induced incandescence (TIRE-LII) technique in laminar ethylene diffusion flame. As an optical method, laser induced incandescence is one of well known methods to get information for spatial and temporal soot volume fraction and soot primary particle size. Furthermore, TIRE-LII is able to measure soot primary particle size that is decided to solve the decay ate of signal S $(t_1)$ and S $(t_2)$ at two detection time. In laminar ethylene diffusion flame, visual flame height is 40 mm from burner tip and measurement points are height of 15, 20, 27.5, 30 mm above burner tip along radial direction. As increasing the height of the flame from burne. tip, primary particle size was increased to HAB(Height Above Burner tip)=20mm, and then decreased from HAB=27.5 mm to 30 mm. This results show the growth and oxidation processes for soot particles formed by combustion.

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References

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