噴射ノズル近傍におけるディーゼル噴霧の内部構造

概要

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The exciplex-based planar fluorescence technique was applied for two-dimensional visualization of a fuel spray in the region close to the nozzle tip. A spray was discharged from a diesel nozzle into pressurized gaseous nitrogen inside the test chamber. The spray was also allowed to evaporate in the high-temperature environment produced by combustion of a homogeneous mixture of methane and air. Photographs of the temporally frozen image of the fuel spray were processed using an image analyzer. The results showed that the high-density portions of liquid fuel appeared almost periodically downstream and that the axial distance between neighboring high-density portions increased with an increase in the downstream distance. It was also observed that the surface wave appeared at a location submillimeters downstream from the nozzle tip.
一般社団法人日本機械学会の論文
1993-08-25