An elementary model for fast detonations in tubular charges
Abstract
The paper is concerned with the experimentally known phenomenon that the detonation velocity of a tubular charge may markedly exceed that of a homogeneous charge of the same explosive. It is shown that the effect may be successfully reproduced using a simple quasi-one-dimensional two-layer model assuming the gas-solid system to be isothermal and the volumetric fraction of the solid phase to be small. In view of a considerable drop of the burned gas pressure/density, compared to the Chapman-Jouguet case, fast detonation may be perceived as a variety of weak (undercompressed) detonation.
- Publication:
-
Combustion Theory and Modelling
- Pub Date:
- July 2019
- DOI:
- 10.1080/13647830.2019.1566573
- Bibcode:
- 2019CTM....23..573B
- Keywords:
-
- tubular charges;
- cavitated charges;
- layered charges;
- channel effect;
- gas-permeable explosives;
- two-phase detonations;
- weak detonations