From laminar to turbulent detonations in energetic materials from molecular dynamics simulations

18th APS-SCCM; 24th AIRAPT

Zhakhovsky, Vasily V.^1 ; Budzevich, Mikalai M.^1 ; Landerville, Aaron C.^1 ; Oleynik, Ivan I.^1 ; White, Carter T.^2

University of South Florida, 4202 East Fowler Avenue, Tampa

FL

33620-5700, United States^1

Naval Research Laboratory, Washington

DC

20375-5320, United States^2

关键词: Condensed phase;    Detonation structures;    Detonation waves;    Molecular dynamics simulations;    Reaction barriers;    Simple modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/17/172005/pdf
DOI  :  10.1088/1742-6596/500/17/172005

来源: IOP

【 摘 要 】

The structure of a self-sustained detonation wave in solid energetic materials was studied using molecular dynamics simulations. Energetic materials are described by the AB model with parameters modified to investigate the detonation-wave structures. It is found that depending on the reaction barrier for the exothermic reactions driving the detonation and the boundary conditions of the sample this simple model exhibits a detonation structure that can range from a planar to a complex turbulent detonation. The different regimes of condensed-phase detonation seen are similar to those observed in gases and diluted liquids.