A Theoretical Analysis of Premixed Flame Propagation with an Isothermal Chain Reaction.

Abstract

An asymptotic analysis, for large activation energies, is presented of the structure of a deflagration wave supported by a two step chemical reaction mechanism with a first order chain-branching reaction and a second order chain termination reaction. In the first step the initial reactant is transformed, without liberation of heat, into an intermediate species; the reaction is auto-catalytic and has a large activation energy. In the second step the intermediate species recombines, with liberation of heat, to give the final products. Three main regimes are found in the analysis. For low recombination rates, an isothermal chain reaction flame precedes a much thicker recombination region where transport effects may be neglected. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1971
Accession Number
AD0751305

Entities

People

  • Amable Liñán

Tags

DTIC Thesaurus Topics

  • Chain Reactions
  • Chemical Reaction Properties
  • Chemical Reactions
  • Combustion
  • Deflagration
  • Endothermic Reactions
  • Energy
  • Exothermic Reactions
  • Fires
  • Flame Propagation
  • Heat Of Activation
  • Reaction Mechanisms

Readers

  • Combustion science or combustion engineering.
  • Fluid Dynamics.