Abstract: One-dimensional overdriven detonation initiation is investigated numerically within a finite rate detailed chemical reaction model. Numerical results exhibit that due to upstream inflow at high temperature, pressure and velocity, a leading shock followed by induction and heat-release zones appears. Because of inflow disturbances, the interface between induction and heat-release zones becomes unstable and overdriven detonation waves are generated. With simulation of unstable interfaces with different gas species, temperatures, inflow pressures and velocities, overdriven detonation initiation process is analyzed and illustrated.

Key words: detonation wave, detonation initiation, overdriven