EFFECT OF DAMKOHLER NUMBER AND NON-UNITY LEWIS NUMBER ON A LAMINAR DIFFUSION FLAME

摘要

The effect of the Damkohler number (D_a) and non-unity Lewis number on a two-dimensional, steady, laminar diffusion flame anchored by a dividing plate in a rectangular channel was considered. The governing equations were solved numerically, using the SIMPLE and ADI schemes. The results for non-unity Lewis number were compared with those for a unity Lewis number, and D_a was also varied in order to determine their effect on the flame structure. The results show that an increase in the D_a causes the flame to exist closer to the trailing edge of the divider and to increase the reactivity. A non-unity Lewis number creates a non-symmetrical flame by forcing the flame to exist on the fuel side.