Journal of Aeronautics & Aerospace Engineering
Open Access

Abstract

Interaction of Spherical Flames of Hydrogen-Air and Methane-Air Mixtures in the Closed Reactor at the Central Spark Initiation with Closed Meshed Obstacles

Rubtsov NM, Sepljarsky BS, Naboko IM, Chernysh VI and Tsvetkov GI

It is shown that spark initiated flames of lean hydrogen-air mixtures (8%-15% �2) pass through close-meshed aluminum spherical obstacles with the cell size 0.04-0.1 mm2; the flame of 15% �2 in air after an obstacle is accelerated; acoustic gas fluctuations occur in the reactor. The flame of 7.5% hydrogen-air mixture does not propagate through the obstacles the flame of 8% natural gas-air mixture is not accelerated after an obstacle; acoustic fluctuations are missing. It is shown that active centers of methane and hydrogen combustion, determining flame propagation, have different chemical nature.