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An Experimental Study on the Combustion Phenomena in Porous Media

다공질 내부의 연소현상에 대한 실험적 연구

  • Lee, Yong-Il (Dept. of Mechanical Engineering, Graduate School of Korea Advanced Institute of Science and Technology) ;
  • Sin, Hyeon-Dong (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 이용일 (한국과학기술원 기계공학과 대학원) ;
  • 신현동 (한국과학기술원 기계공학과)
  • Published : 1996.01.01

Abstract

Experiments were performed on the laminar premixed flame stabilized in a porous medium to know whether the flame downstream of the combustor exists or not. In previous theoretical studies, a stable flame has been predicted in the downstream region of the combustor, but it has never been observed in experiments. In this study, a stable downstream flame could be obtained for the lower burning velocity through circumferential heating by a blue flame positioned outside the periphery of the specially devised combustor. The existence of the stable downstream flame was confirmed by a direct photography of soot line, and temperature measurements. The effect of combustor diameter to flame stability was also considered. As the diameter of the combustor increases, the lean flammability limit was extended.

Keywords