回転噴孔による均一粒の発生法について

概要

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As we found that the dripping of liquid from the end of a tube with small diameter accompanied no satellite drop, we tried to produce a plenty of uniform drops by means of rotating nozzles, checking the results with theoretical considerations. The chief results obtained are as follows : (1) If the coefficient of the outer diameter C_<D_2>, defined by [numerical formula] (D_2=the outer diameter of the tube, σ=the surface tension and γ=the specific weight of the liquid), is less than 0.4,uniform drops can be produced. (2) When the flow rate q is small, the diameter of drop attains the maximum value d_<max> which is given by the simultaneous equations [numerical formula] where R_1=the radius from the center to the tip of rotating nozzle, n rpm=the rotational speed and C_w=the coefficient of the drop weight. The functional form of f in (2) is given in the previous paper^<(1)>. (3) The diameter of drop decreases with the flow rate from d_<max> to its minimum value d_<min>, until the critical rauge is reached, where the mode of flow changes from the dripping to the smooth laminar flow. The value of d_<min> can be determined from equations (1)〜(3), if we only substitute the value of internal diameter D_1 of the tube to the outer diameter D_2. (1) Tech.Reb.Tohoku Univ.19,2 (1955), 135.
一般社団法人日本機械学会の論文
1956-04-25