回転噴孔による液体の微粒化 : 第2報, 粒径におよぼす各種因子の影響

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In this paper, the effects of such factors as the speed of rotation n (rpm), discharge velocity v_0 (m/s), diameter of the nozzle D_n (mm), and rotating diameter of the nozzle D_r (cm) on droplet sizes were examined with water giving consideration to the mechanisms of atomization described in the preveous report. The results may be summarized as : (1) As Figs. 7〜11 represent, the Sauter mean diameters d^^- do not decrease smoothly as the value of v is increased, but form five distinct stages, where v is a resultant velocity of v_0 and a peripheral velocity of the nozzle. The first stage marked by 1 in these Figs. corresponds to the mode of dripping, the second stage marked by 2 corresponds to the smooth jet, the third stage marked by 3 to the wavy jet, the forth marked by 4 to the partially strayed jet and the fifth marked by 5 to the spray. (2) Mean diameter d^^- (μ) is expressed by the formulae [numerical formula] for the region of wavy jet (stage 3), [numerical formula] for the region of spray (stage 5). (3) The maximum diameter d_<max> shows nearly the same tendency as d^^- (Fig. 15) and has the following relation : [numerical formula]
一般社団法人日本機械学会の論文
1959-12-25