1740 残留微小燃料液滴を利用した燃焼促進

概要

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Fundamental studies on spray combustion have been performed using a static homogeneous fuel spray as a simple model of a real spray. Homogenous sprays were generated by the condensation method using rapid expansion of saturated ethanol vapor-air mixtures. In this study, microgravity conditions have been employed to prevent large droplet from sedimentation. Flame speed and maximum burning pressure were measured with a constant volume combustion chamber. Initial Pressure was 0.2 MPa for all experiments. The mean droplet diameter was varied from 3 to 48 μm. It was found that the flame speed and the maximum burning pressure of homogeneous sprays are larger than those of premixtures of the same equivalence ratio under certain conditions. The dependences of the flame speed and the maximum burning pressure on the mean droplet diameter are strongly affected by the total equivalence ratio.
社団法人日本機械学会の論文
2002-09-20