Numerical Simulation of NOx Formation in a Pre-Stirred Mixture Flame Near a Cold Barrier
D. A. Slastnaya1, M. Yu. Khrebtov1,2, R. I. Mullyadzhanov1,2, V. M. Dulin1,2
1Kutateladze Institute of Thermal Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
Keywords: obstacle-directed laminar flame, direct numerical modeling, detailed kinetic mechanism, laminarSMOKE, OpenFoam, GRI-Mech 3.0
Abstract
The results of direct numerical modeling of combustion in a cone-shaped methane-air mixture flame directed at a flat, cold barrier are presented. Three cases with different distances between the burner nozzle and the barrier were considered. The study focused on analyzing nitrogen oxide formation in the wall region. It was found that when the barrier was positioned three calibers from the nozzle edge, a recirculation zone with an elevated concentration of nitrogen oxides (NOx ) forms between the cone-shaped flame front and the cold wall. This increased NOx formation is offset in the downstream wall region.
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