Flame-wall interaction of a forced laminar premixed propane flame: Flame dynamics and exhaust CO emissions

Abstract

This paper presents a systematic experimental study of the relative contributions of various near-wall flame dynamics to exhaust CO emissions. Exhaust carbon monoxide (CO) emissions and quenching distance measurements are reported for a laminar forced premixed propane flame undergoing flame-wall interaction. A vehicle-certification grade emissions bench was used to measure exhaust CO emissions at two points in the exhaust, one close to the flame and one far downstream of the flame. Flame chemiluminescence images were analysed to determine the quenching distance at 16 points in the forcing cycle. Four frequencies and 60 Hz), three amplitudes (and 0.15), and two cooling rates (and 240 W), are ..