Flame characteristics of a non-premixed oxy-fuel jet in a lab-scale furnace

Oxygen temperature variation of a non-premixed oxy-methane flame in a lab-scale slot burner

“…The typical wavelengths of OH* and CH* at the (0,0) band in a non-premixed oxy-methane flame were shown in a previous study [29]. The intensity of light emissions from a non-premixed oxy-methane flame was strongest at λ=308 nm.…”

“…Table 1 Previous studies in the field of flame length prediction the geometry of a slot burner (unit: mm) [23,29] Table 4 Previous studies in the field of flame length scaling using effective diameter …”

“…In the current study, turbulence and local mixing were assumed to play an important role near the flame base due to vortex generation on the dump plane between the fuel jet and oxidant nozzle exits (i.e., w=33.3×d F ) [29]. An eddy-dissipation concept (EDC) model [30][31][32][33] with a discrete ordinate (DO) model [34] was selected to simulate the turbulence-chemistry interaction and radiation after comparing simulation results with a finite rate-eddy dissipation model (FR-EDM) [27].…”

“…7 (b) (i.e., numerical result). This discrepancy is thought to arise due to 3-dimensional flow effects, such as vortex or helical flow near nozzle exit [29]. In the current study, 2-dimensional simulation was performed due to the capability and limitation of computing resources.…”

Flame Structure and Chemiluminescence Emissions of Inverse Diffusion Flames under Sinusoidally Driven Plasma Discharges

“…Non-premixed flames have better stability under wide ranges of operating conditions and safety with respect to premixed-flame-based combustion [1][2][3]. Several previous investigations have been performed to gain an understanding of the characteristics of the flame [4][5][6].…”