Abstract
A single-headed spinning detonation wave is observed in molecular dynamics simulations of a condensed phase detonation of an energetic material confined to a round tube. The EM is modeled using a modified AB reactive empirical bond order (REBO) potential. The simulated spinning detonation is similar to those observed in the gas phase. However, in addition to the incident, oblique, and transverse shock waves well known from gas-phase spinning detonations, a contact shock wave generated by a contact discontinuity is uncovered in our MD simulations.
Highlights
Gas-phase detonations close to failure are known to spontaneously develop complex two and three dimensional structures such as cellular and pulsating patterns that prevent their collapse
Well known in the gas phase [1, 2], such complex structures have not yet been observed in the condensed phase with the exception of dilute liquids [3,4,5]. This is not surprising, as processes in condensed phase detonations occur at much smaller length and time scales making the experimental observation of such detonation microstructure extremely difficult
These short time and length scales are ideal for molecular dynamics (MD) simulations
Summary
Gas-phase detonations close to failure are known to spontaneously develop complex two and three dimensional structures such as cellular and pulsating patterns that prevent their collapse. The condensed phase spinning detonation observed in our AB simulations in a tube behaves in a similar fashion and exhibits a fourth shock wave generated by a contact discontinuity.
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