渦核内の高速火炎伝ぱ特性(熱工学,内燃機関,動力など)

概要

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Characteristics of flame propagation in a vortex core were experimentally investigated using a vortex ring generated by a jet of a mixture ejected through a circular nozzle. The ratio of increase in the flame speed to the maximum tangential velocity V_<θmax> decreases gradually with increasing V_<θmax>. This is because the radius of curvature of the flame tip in the vortex core decreases with increasing V_<θmax> The flame speed increases with increasing ratio of the densities of the unburned gas to the burned gas (ρu/ρb)^<1/2>. This is because the radius of curvature of the flame tip increases with increasing (ρu/ρb)^<1/2>. The flame speed in the vortex core can be predicted well using the model of flame propagation in which the shape of the flame tip in the vortex core is considered.
一般社団法人日本機械学会の論文
1997-01-25