Experimental Study on CH4 / Air Diffusion Combustion on the Upper Surface of Porous Media Packed Beds

This paper experimentally study on CH4 / air co-flow diffusion combustion on the upper surface of porous media packed beds. The flame height and flame shape were reconstructed from the upper and the side of the combustor. The influence of the height of the packed bed on the flame height and flame shape is reported. It is shown that the flame height decreases rapidly and the circular diameter increases rapidly with increase the height of the packed beds.