多孔質円筒回転バーナ内に形成された管状火炎の消炎特性

概要

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Extinction characteristics of tubular flames established in a rotating burner of a porous cylinder have been experimentally investigated. The extinction limit was mapped as functions of the fuel concentration (Ω), mixture ejection velocity (V), and burner rotating speed (N). The flame diameter near the extinction limit was also measured. Methane and propane were used as fuels. Results show that the minimum fuel concentration at the lean limit almost independent of V and N, but the maximum fuel concentration at the rich limit depends on V and N. The rich limits decrease as V increase for methane and propane flame, and the rich limit is almost independent of N for the methane flame, but it increases markedly as N increases for the propane flame. The flame diameter at the extinction limits is small for lean-methane and rich-propane flames, but it is large for rich-methane and lean-propane flames. The flame diameter near the extinction limit seems to have the minimum flame diameter under which the flame cannot be established.
社団法人日本機械学会の論文
1995-03-25