Characteristics of methane non-premixed multiple jet flames

메탄 비예혼합 상호작용 화염의 특성

  • 이병준 (영남대학교 기계공학부) ;
  • 김진현 (영남대학교대학원, 한국기계연구원 복합재료그룹)
  • Published : 2004.11.03

Abstract

It has been reported that if eight small nozzles are arranged along the circle of 40 $^{\sim}$ 72 times the diameter of single nozzle, the propane non-premixed flames are not extinguished even in 200m/s, In this research, experiments were extended to the methane flame. Nine nozzles were used- eight was evenly located along the perimeter of the imaginary circle and one at the geometric center. The space between nozzles, s, the exit velocity and the role of the jet from the center nozzle were considered. On the contrary to the propane non-premixed case, the maximum blowout velocity for the methane diffusion flame was achieved when small amount of fuel is supplied through the center nozzle and s/d equals around 21. In the laminar region, the flame attached at the center nozzle anchored the outer lifted flames.

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