Flame Propagation in a Vortex Ring

Enhanced flame propagation speeds in vortex rings formed of premixed combustible gases has been reported. Constant volume combustion with a rotating heat source which the ignited vortex core is can produce a propagating pressure wave. But this mechanism apparently fails as the propagation criterion cannot be met. Stability considerations indicate that the molecules in a vortex core are rotationally excited. Three consequences of this are examined The transport properties of the gas in the core The effect on reaction rate The possibility of heat conduction by an internal convection mechanism.