한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제5권2호
  • /
  • Pages.60-68
  • /
  • 1997
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

UV Laser Rayleigh Scattering을 이용한 $C_3H_8/O_2$ 화염에서 가스 성분의 농도 및 온도 분포 계측에 관한 실험적 연구

Am Experimental Study on Measurement of Number Density and Temperature Distributions in $C_3H_8/O_2$ Flame by UV Laser Rayleigh Scattering

  • 발행 : 1997.03.01
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초록

Rayleigh Scattering Cross Sections($\sigma$i) of various gases and the temperature distributions of premixes C3H8/O2 flame are measured by high power KrF(248nm) Exci- mer laser and ICCD camera. Results show that $\sigma$i of O2 and Propane(C3H8) gases agree well in the 5% error range, but of H2 has the more or less difference from the calcul- ated value by other groups. This is attributed to the low RS signal of H2 to Nosie level(S/N ratio). The temperature distributions of flame range out between 300K in the air and about 2000K in the burned area. In this temperature range, out system has the about 250K temperature resolution. Because low RS signals in the reaction area with high temperature are affected highly by noises, temperature uncertainty of this area is relatively high to another part of flame. Experimental results show that UV Rayleigh Scattering can be used for the measurement of mixing ratio of mixed gases and the temperature distributions of flame. Especially, this technique can be applied for the measurement of the mixing ratio of air/fuel before the ignition and the flame structure after the ignition inside the Engine.

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참고문헌

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