A Study of detonation evolution and structure for a model of compressible two-phase reactive flow
Date
2006-10-25Author
Schwendeman, Donald
Wahle, Christopher
Kapila, Ashwani
Metadata
Show full item recordAbstract
A two-phase model of heterogeneous explosives, due to Baer and Nunziato, is examined computation-
ally by a new numerical approach that is a modification of the standard Godunov scheme. The approach
generates well-resolved and accurate solutions economically, and treats rationally the nozzling terms that
render the otherwise hyperbolic model incapable of a conservative representation. A broad range of the
parameter space is investigated and two possible structures of steady, planar detonations are identified,
along with subregions of the parameter space where they exist. The transient processes subsequent to
impact by a low-speed piston are studied in detail, for a variety of cases, to describe the transition from
a compaction wave to one or the other of the two steady detonation waves. The findings are compared
with existing computational results.