Interactions Between a Propagating Flame and Rectangular Wall Obstacles in a Rectangular Confinement

직사각형 폭발 챔버에서 화염전파와 직사각형 장애물의 상관관계

  • Published : 2008.04.30

Abstract

Experimental studies have been performed to examine the influences of wall obstructions in a rectangular confinement. Three wall obstacles with blockage ratios ranging from 10 to 30% were used. Temporally resolved flame front images were recorded by a high-speed video camera to investigate the interaction between a propagating flame and the obstacle. The local flame displacement speed and its probability density functions(PDFs) were obtained for the wall obstructions. During the interaction with the sharp-edges of the wall obstacles, the local propagation speed increased. The increase of local speed became larger as the obstruction ratio increased. However, the averaged flame displacement speeds with different blockage ratios were not significantly different within the chamber as shown in the paper of Park et al. The flame front interaction investigated in this work was less dependent of the obstacle obstructions compared to that published in the literature for large L/D.

Keywords

obstruction ratio;flame displacement speed;flame propagation

References

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