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 language | English |
|---|---|
| Pages (from-to) | 313-327 |
| Number of pages | 15 |
| Journal | Combustion Theory and Modelling |
| Volume | 20 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 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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Miroshnichenko, T., Gubernov, V., Maruta, K., & Minaev, S. (2016). Diffusive–thermal oscillations of rich premixed hydrogen–air flames in a microflow reactor. Combustion Theory and Modelling, 20(2), 313-327. https://doi.org/10.1080/13647830.2015.1130858