Transition of combustion to detonation in gasoline-air mixtures

Abstract

The authors attempt to determine the time and point at which detonation develops and study the dependence of these parameters on initial mixture temperatures. A figure shows the wave pattern of the flow upon transition of combustion to detonation for a gasoline-air mixture at atmospheric pressure 0.1 MPa and relative humidity 70%. The experiments show that upon heating of the gasoline-air mixture, the igniting shock wave develops earlier in the tube. The times required for development of the detonation wave and for interaction of the detonation wave with the igniting wave also decrease. For the mixtures considered, in contrast to light hydrocarbons, the predetonation distance does not increase with increase in intial temperature.