Impact of the Nozzle Angles, Distance between Burners, and N2 on Burning Velocity for Premixed Counter Flame

The most significant property of the premixed counter flames is the velocity of burning. The velocities laminar burning take vital roles in the determination of several significant features of the process of combustion in the spark ignition engines; among them are the delay of ignition, the quenching distance, propagation rates, and the minimum ignition energy. This property was studied using three types of nozzle, the laminar burning velocities of LPG-air for angle of nozzle (30º) were found to be lower than those of the angle of nozzle (60º), through the range of the experimental equivalence ratios. In addition, the distance between the counter burners was investigated and the flame front was isolated by using nitrogen. Also, the measured velocities of burning were compared with those of other investigators, proposing there were a good agreement between the current data and those of other investigators.