Premixed flat flame burner stabilized

Fig. 16.8 Illustration of a premixed flat-flame burner. Fuel and oxidizer are first premixed, and then flow through a porous burner face. A steady, one-dimensional flat flame is stabilized by heat transfer to the cooled burner face. The solutions shown here are for a methane-air flame, in which the air contains water vapor at 100% relative humidity. By plotting the temperature and selected species profiles, one can observe some of the complexities of flame structure.

De Goey, L. Van Maaren, A. Quax, R. (1993). Stabilization of Adiabatic Premixed Laminar Flames on a Flat Flame Burner. Combust. Sci Technol, Vol. 92, p.201-207, ISSN 0010-... 

Premix, simulates one-dimensional burner-stabilized and freely propagating laminar flat flames. 

Low Pressure Flame Apparatus. All experiments were performed on flat, premixed low pressure, 2.7 kPa (20 Torr) C2H2/O2 flames stabilized on a water cooled burner. This 8.6 cm diam burner was constructed of approximately 900, 0.12 cm i.d. stainless steel tubes microbrazed into two stainless steel perforated plates to form a water jacket around the tubes. Gases were metered using calibrated critical flow orifices. The burner was installed in a low pressure vessel pumped by a 140 L s" (300 CFM) mechanical vacuum pump. Unburned gas velocities (298 K and 2.7 kPa) in all cases were 50 cm s . Equivalence ratios from = 1.5 to 4.0 were studied with most emphasis on a sooting ( ) = 3.0 flame. Visible soot emission became apparent at a soot threshold of <() = 2.4 to... 

---