Deflagration-to-detonation transition in narrow channels: hydraulic resistance versus flame folding

Leonid Kagan*, Gregory Sivashinsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


This paper is concerned with the identification of the key interactions controlling the deflagration-to-detonation transition in narrow smooth-walled channels. Two agencies contributing to the transition are discussed: hydraulic resistance and flame folding. Depending on the kinetics and parameters of the system, nucleation of detonation may occur near the channel wall and/or in the channel interior. A possibly unexpected outcome of the resistance-folding interplay is the non-monotonicity of the dependence between the predetonation run up time/distance and the channel width.

Original languageEnglish
Pages (from-to)798-811
Number of pages14
JournalCombustion Theory and Modelling
Issue number5
StatePublished - 2 Sep 2016


FundersFunder number
United States-Israel Binational Science Foundation2012-057
Ministry of Education and Science of the Russian FederationY26.31.0003
Israel Science Foundation335/13


    • combustion in narrow gaps and capillaries
    • deflagration-to-detonation transition
    • thick flames


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