Curvilinear deflagration of energetic materials

Igor R. Kuznetsov, D. Scott Stewart

Research output: Contribution to journalArticlepeer-review


The effects of material interface curvature on deflagration of a homogeneous solid energetic material (EM) is studied in a limit when the radius of curvature is much larger than the deflagration front thickness. Under the assumption of quasi-steady burning, a method of matched asymptotics is employed do derive first-order curvature corrections to the mass flux across the gas-solid interface as well as to the interface temperature. As an illustration, a problem of quasi-steady spherical particle deflagration is solved numerically and the simulation results are used to verify those obtained through asymptotic analysis. An algorithm for a fully-coupled unsteady solver suitable for EM deflagration simulation is presented. Numerical solution of the unsteady spherical particle deflagration is used to show that the assumption of quasi-steady deflagration is valid.

Original languageEnglish (US)
Pages (from-to)615-637
Number of pages23
JournalCombustion Theory and Modelling
Issue number4
StatePublished - Aug 2007


  • Asymptotic
  • Curvature
  • Deflagration
  • Particle
  • Propellant

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Modeling and Simulation
  • Fuel Technology
  • Energy Engineering and Power Technology
  • General Physics and Astronomy


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