The piston-flow interaction as a model for the deflagration-to-detonation transition

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Abstract

The piston-flow interaction induced by a piston pushing hydraulically resisted gas through a long tube is discussed. It is shown that the hydraulic resistance causes a significant precompression and preheating of the gas adjacent to the piston's edge. In the case of an explosive premixture this development may lead to a localized autoignition triggering detonation. It is suggested that the problem may serve as a guide for understanding the deflagration-to-detonation transition in tubes, with the piston modeling the impact of the advancing flame.

Original languageEnglish
Pages (from-to)42-47
Number of pages6
JournalCombustion and Flame
Volume158
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • Deflagration-to-detonation transition
  • Flame-piston analogy
  • Piston-flow interaction

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