Abstract
Combustion characteristics of H_2/O_2/N_2 mixture were investigated by using a micro flow reactor with a controlled temperature profile. Two flame responses were observed experimentally by changing the inlet mixture flow velocity. By gas sampling analysis, it was found that reactants were completely consumed in the low flow velocity region in which no flames were visually observed. 2-D computation with detailed chemical mechanisms of gas phase reaction and surface reaction was conducted to examine the effect of radical quenching on the wall surface. By comparing the computation to gas sampling analysis, it was supposed that the surface reaction mechanism may overestimate the effect of radical quenching on the wall surface.
