Abstract
The interaction of a strong vortex ring with a premixed flame was experimentally studied in order to understand how the flame is affected by an element of intensive turbulence. The interaction could be observed by sequential schlieren photographs and instantaneous OH-LIPF and CH-LIF images. As a result, two types of interacting behavior have been observed: One is that the flame becomes a mushroom shape, a pocket of unburned gas forms, and finally the pocket disappears by combustion. The other is that the flame becomes a mushroom shape but the mushroom flame intrudes into the burned gas region without entraining the unburned gas.
