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

  • 제24권5호
  • /
  • Pages.725-732
  • /
  • 2000
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  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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레이저 유도 백열법을 이용한 화염 내부 매연 농도 측정

Measurements of Soot Volume Fraction Using Laser Induced Incandescence

  • 이승 (영남대학교 대학원 기계공학과) ;
  • 이상협 (영남대학교 대학원 기계공학과) ;
  • 이병준 (영남대학교 기계공학부) ;
  • 한재원 (한국표준과학연구원)
  • 발행 : 2000.05.01
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초록

Laser induced incandescence (LII) method is frequently used to measure soot volume fraction in flames. In this study, experiments were performed to measure soot volume fraction in coaxial diffusion flame using LII method and calibrated with laser scattering/extinction method. The effects of laser intensity (>$1{\times}10^8W/cm^2$), laser wavelength (532nm, 1064nm) and detection wavelength (400nm, 600nm) on the LII signal were investigated. On the range of $4{\times}10^8{\sim}8{\times}10^8W/cm^2$ there were no effects of laser intensity on LII signal. Except these ranges, LII signal was increased with laser intensity. For the long gate width, the LII signals of the higher laser intensity (>${\vartheta}(GW/cm^2)$) cases had better correlation with soot volume fraction which were measured by laser extinction method compared with lower laser intensity cases. The errors of 2-dimensional cases at the calibration height were approximately 50% regardless of laser wavelength.

키워드

참고문헌

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