Critical Conditions for Plane-to-Cylindrical Detonation Wave Transformation

The critical conditions for the transformation of a plane detonation wave into a cylindrical detonation wave are experimentally found. For mixtures of oxygen with hydrogen or methane, the geometric conditions are determined for detonation initiation in a cylindrical gap at various diameters of the orifice through which the plane detonation enters the gap. To identify features of observed explosive processes, the results of two-dimensional numerical modeling are analyzed.