Detonation-wave interactions

The interaction of laterally colliding, diverging, cylindrical detonation waves in PBX-9404 was studied using the radiographic machine PHERMEX and the two dimensional, reactive Lagrangian hydrodynamic code 2DL. The experimentally observed flow could be numerically reproduced using the Forest Fire heterogeneous shock initiation burn model. The interaction of two, three, and five colliding, diverging spherical detonation waves in PBX-9404 was numerically modeled using the three dimensional, reactive Eulerian hydrodynamic code 3DE. The size and magnitude of the high pressure double, triple, quadruple, and quintuple interactions depends significantly upon the number and relative locations of initiators. The initiation of propagating detonation in the insensitive explosive PBX-9502 by triple shock wave interaction resulting from three initiators was studied using the 3DE code with Forest Fire kinetics.