DEFLAGRATION TO DETONATION TRANSITION IN COMBUSTIBLE GAS-MIXTURES

This paper presents the results of a computational investigation of th e process of deflagration to detonation transition in a combustible ga s mixture. The type of combustion (i.e., deflagration or detonation) s upported by a two-step reaction scheme is studied as a function of the activation energies. It is shown that both a deflagration to detonati on transition and a deflagration wave that lags behind a leading shock are possible. Two types of deflagration to detonation transitions are found theoretically: initiation of detonation from the flame zone and initiation of detonation along a contact discontinuity in the compres sed gas near the primary shock wave.