Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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A Study on Preferential Diffusion Effects in $H_2/CO/CO_2$ Syn-gas Flames

$H_2/CO/CO_2$ 합성가스화염에서 선호확산 효과에 관한 연구

  • 김태권 (계명대학교 기계자동차공학부) ;
  • 박정 (부경대학교 기계공학부) ;
  • 하지수 (계명대학교 에너지환경공학과)
  • Published : 2008.07.31
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Abstract

Numerical study is conducted to grasp preferential diffusion effects on flame characteristics in $H_2/CO$ syn-gas diffusion flames diluted with $CO_2$. The models of Sun et al. and David et al., which have been well known to be best-fitted for $H_2/CO$ synthetic mixture flames. are evaluated for $H_2/CO$ synthetic mixture flames diluted with $CO_2$. Comparison of flame structures with mixture-averaged species diffusion and suppression of the diffusivities of $H_2$ and H was made. The behaviors of maximum flame temperatures with those species diffusion models are not explained by scalar dissipation rate but by the nature of chemical kinetics. Importantly-contributing reaction steps to heat release rate are also compared for the three species diffusion models in $H_2/CO/CO_2$ flames with and without $CO_2$ dilution.

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References

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