한국연소학회지 (Journal of the Korean Society of Combustion)

  • 제15권4호
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  • Pages.37-42
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  • 2010
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  • 1226-0959(pISSN)
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  • 2466-2089(eISSN)
한국연소학회 (The Korean Society of Combustion)
권호 표지

가스터빈 연소기에서 $CO_2^*$ 배경 강도가 $OH^*$ 및 $CH^*$ 화학 발광 강도에 미치는 영향

$CO_2^*$ Background Effect on $OH^*$ and $CH^*$ Chemiluminescence Intensities in a Gas Turbine Combustor

  • 투고 : 2010.06.07
  • 심사 : 2010.10.12
  • 발행 : 2010.12.31
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초록

The measurement of heat release rate is of great importance in the study of thermo-acoustic instability occurring in lean premixed combustion and the chemiluminescence emission has been used as an indicator of heat release in combustion instability studies primarily for its relative simplicity. This paper presents results of experimental study of flame chemiluminescence from an atmospheric, swirl-stabilized, turbulent lean premixed flame with a main emphasis on the effect of $CO_2^*$ background level in the $CH^*$ and $OH^*$ band. The test results show that the effect of $CO_2^*$ level in the $CH^*$ band is greater than that in the $OH^*$ band. Also, the background to peak ratio for both $CH^*$ and $OH^*$ bands can be expressed as a function of equivalence ratio, almost regardless of a change in the inlet velocity.

키워드

참고문헌

  1. Balachandran, R. et al., "Experimental investigation of the nonlinear response of turbulent premixed flames to imposed inlet velocity oscillations", Combustion and Flame, Vol. 143, 2005, pp. 37-55 https://doi.org/10.1016/j.combustflame.2005.04.009
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  3. Jun Kojima et al., "Basic asspects of OH(A), CH(A), and C2(d) chemiluminescence in the reaction zone of laminar methane-air premixed flames", Combustion and Flame, Vol. 140, 2005, pp. 34-45 https://doi.org/10.1016/j.combustflame.2004.10.002
  4. Lee, J. G. et al., "Experimental diagnostics for the study of combustion instabilities in lean premixed combustors", Journal of Propulsion and Power, Vol. 19, 2003, pp. 735-750 https://doi.org/10.2514/2.6191
  5. Kim, D. et al., "Effect of flame structure on the flame transfer function in a premixed gas turbine combustor", Journal of Engineering for Gas Turbine and Power, Vol. 132, 021502, 2010. https://doi.org/10.1115/1.3124664