NUMERICAL SIMULATION OF DETONATION WAVE PROPAGATING THROUGH THE CHANNELS WITH SUDDENLY EXPANDING SECTION

The change of the detonation intensity and the behavior of the waveare studied by a numerical simulation. It is shown that the detonationwave is weakened to deflagration partly in the initial stage of propagatinginto the large section channels, and the detonation is re-ignited by thehigh pressure and high temperature zone generated by Mach reflection created by the interaction of the shock wave and the well.