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

The Korean Society of Mechanical Engineers (대한기계학회)
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A Transitional Behavior of a Premixed Flame and a Triple Flame in a Lifted Flame(I)

부상화염에서 예혼합화염과 삼지화염의 천이적 거동(I)

  • 장준영 (계명대학교 산업기술연구소) ;
  • 박정 (순천대학교 기계자동차공학부) ;
  • 김태권 (계명대학교 기계자동차공학부)
  • Published : 2005.03.01
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Abstract

We have presented characteristics of a transitional behavior from a premixed flame to a triple flame in a lifted flame according to the change of equivalence ratio. The experimental apparatus consisted of a slot burner and a contraction nozzle for a lifted flame. As concentration difference of the both side of slot burner increases, the shape of flame changed from a premixed flame to a triple flame, and the liftoff height decreased to the minimum value and then increased again. Around this minimum point, it is confirmed a transition regime from premixed flame to triple flame. Consequently, the experimental results of the liftoff height, flame curvature, and luminescence intensity showed that the stabilized laminar lifted flame regime is categorized by regimes of premixed flame, triple flame and critical flame.

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References

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