ABSTRACT
It is clear that by fragmenting the flame front and increasing the flame surface area, turbulent flow structures in a propagating flame can increase the local flame speed and hence burning rate. It is well understood that an important mechanism for the generation of such turbulent flow structures in explosions is the interaction of a propagating flame with a solid obstacle. Moen et al ( 1 980) showed the influence of downstream flow structures generated by orifice type obstacles on increasing flame speed. Recent advances in optical diagnostic measurement techniques have provided further understanding of premixed turbulent combustion. Studies by Fairweather et al ( 1 996) provided data in small scale experiments aimed at investigating the interaction between propagating flames and solid obstacles. Linsdtedt and Saktitharan ( 1 998) presented two component velocity data on the interaction of premixed flame and wall type obstacle.
