Diffusive–thermal oscillations of rich premixed hydrogen–air flames in a microflow reactor

Taisia Miroshnichenko, Vladimir Gubernov, Kaoru Maruta, Sergei Minaev

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this paper the dynamics of rich hydrogen–air flames in a microflow reactor with controlled temperature of the walls is investigated numerically using the thermal-diffusion model with two-step kinetics in one spatial dimension. It is found that as the parameters of the system are varied the sequence of bifurcation occurs leading to the formation of complex spatio-temporal patterns. These include pulsating, chaotic, mixed-mode and FREI (Flames with Repetitive Extinction and Ignition) oscillations. The critical parameter values for the existence of different dynamical regimes are found in terms of equivalence ratio and flow velocity.

Original languageEnglish
Pages (from-to)313-327
Number of pages15
JournalCombustion Theory and Modelling
Volume20
Issue number2
DOIs
Publication statusPublished - 2016 Mar 3

Keywords

  • flame dynamics
  • hydrogen–air flames
  • microcombustion
  • premixed flames
  • stability

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Modelling and Simulation
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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