An elementary model for fast detonations in tubular charges

Irina Brailovsky, Leonid Kagan*, Peter Gordon, Gregory Sivashinsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)573-591
Number of pages19
JournalCombustion Theory and Modelling
Issue number4
StatePublished - 4 Jul 2019


  • cavitated charges
  • channel effect
  • gas-permeable explosives
  • layered charges
  • tubular charges
  • two-phase detonations
  • weak detonations


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