Mesoscopic simulation of laser initiation in pentaerythritol tetranitrate

A numerical simulation of laser initiation in a pentaerythritol tetranitrate is presented. A contact smoothed particle hydrodynamics modeling with an explicit simplified-geometry of the microstructure is defined. A sequence of spheres in simple cubic and face-centred cubic lattices is considered. Di...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-06, Vol.1250 (1), p.12045
Main Authors: Murzov, S A, Chesnokov, A A, Parshikov, A N, Egorova, M S, Zhakhovsky, V V, Yanilkin, A V
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Crystal lattices
Detonation
Enthalpy
Face centered cubic lattice
Fluid flow
Mathematical models
PETN
Porous materials
Shock wave propagation
Shock waves
Simulation
Smooth particle hydrodynamics
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Summary:A numerical simulation of laser initiation in a pentaerythritol tetranitrate is presented. A contact smoothed particle hydrodynamics modeling with an explicit simplified-geometry of the microstructure is defined. A sequence of spheres in simple cubic and face-centred cubic lattices is considered. Different types of PETN crystal particles compression by high-enthalpy products expansion are simulated in the hydrodynamic approach. The compactification of spheres and formation of a shock wave in a porous material is observed. Compactification of spherical particles stops the flow of hot products and shock wave is able to override the reaction front propagation. The simulation demonstrates a shock-driven mechanism in the detonation initiation processes.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1250/1/012045