Experimental investigations and numerical simulations of methane cup-burner flame
1 VŠB-Technical University of Ostrava, Faculty of Safety Engineering, Lumίrova 13, 700 30 Ostrava-Výškovice, Czech Republic
2 VŠB-Technical University of Ostrava, Faculty of Mechanical Engineering, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech Republic
3 Česká spořitelna, a.s., Olbrachtova 1929/62, CZ-14 000 Prague 4, Czech Republic
4 Institute of Thermomechanics, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 5, 182 23 Prague 8, Czech Republic
5 VŠB-Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech Republic
6 J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 3, 182 23 Prague 8, Czech Republic
Pulsation frequency of the cup-burner flame was determined by means of experimental investigations and numerical simulations. Simplified chemical kinetics was successfully implemented into a laminar fluid flow model applied to the complex burner geometry. Our methodical approach is based on the monitoring of flame emission, fast Fourier transformation and reproduction of measured spectral features by numerical simulations. Qualitative agreement between experimental and predicted oscillatory behaviour was obtained by employing a two-step methane oxidation scheme.
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