うず巻噴射弁の微粒化特性 : 第2報補遺 うず巻室の寸法が流量係数, 噴霧角および粒径に及ぼす影響

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  • Atomizing Characteristics of Swirl Injection Nozzle : Supplement of 2nd Report, The Effect of the Dimensions of the Swirl Chamber on the Coefficient of Discharge, the Spray Angle and the Size of Drop

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In the 2nd Report, the effect of the dimensions of swirl chamber on the size of drop was investigated and an attempt was made to search for the condition of the optimum form of nozzle. Besides the size of drop, the characters of the swirl nozzle can be represented by the discharge coefficient and the spray angle. These two can be obtained from the potential flow theory but they agree with the experiments only in the narrow range. In the present paper, the auther made the empirical formulas of the discharge coefficient and the spray angle which were applicable to wide range of the dimensions of swirl chamber for the non-viscous liquids, and obtained the more accurate empirical formula than that of the second report for the mean diameter of drop taking into accout the effect of ratio between the length and diameter of orifice.

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