高圧,高温下におけるディーゼル噴霧のホログラフィー計測

概要

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Application of the pulsed laser laser holography technique was made to observe diesel sprays injected into a high pressure and temperature atmosphere in a quiescent bomb. Two different holography techniques, that is, single-pulsed laser holography and double-pulsed holographic interferometry were adopted in this study. Shadowgraphs, schlieren photographs and micrographs of a reconstructed image of the spray were taken. The spray widths and equivalence ratios of fuel droplets were microscopically measured. The fuel droplets and vapor around the spray in a high pressure and temperature atmosphere could be observed by single-pulsed laser holography. By double-pulsed holographic interferometry, interference fringes were observed at the spray edge, and the contrast between the spray edge and the atmosphere was made more striking. The spray width has a tendency to decrease when the atmospheric temperature is increased. Some droplets were observed around the spray up to the pressure 3.1 MPa and the temperature 773K.
一般社団法人日本機械学会の論文
1986-06-25