Atomization of Liquids by Means of a Rotating Nozzle : 6th Report, Atomization of Liquids by a Projected Nozzle

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  • 回転噴孔による液体の微粒化 : 第6報, 突出噴孔からの微粒化
  • カイテンフンコウ ニ ヨル エキタイ ノ ビリュウカ 6

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Abstract

In order to develop the fundamental results obtained in the previous reports, experiments were carried out by using the vessel with a small tube projected on its side wall, and the following facts were obtained : (1) The length of the projected tube was changed from 0 to 5 mm, but no marked variation was observed in the diameter of droplets d (S.M.D.). (2) Any inclination of the tube from the radial direction to the direction of an axis of rotation has also no significant effect on the value of d. (3) Though the formation of a thin membrane of a liquid was expected by changing the shape of the nozzle to the tape of a slit or an injector needle, it was slightly observed in the slit type nozzle as shown in Fig. 9 (b). The filmwise disruption like this reduced the value of d. (4) The size distributions of the droplets in all the cases mentioned above have nearly the same tendency as that of the vessel type atomizer described in the previous report. But there is an exception of the case accompanied with the filmwise disruption. (5) In the spray, the maximum diameter dmax, in general, has such a simple relation with the mean diameter d as dmax≒2d, but in the case of the slit type nozzle, the difference between these two diameters becomes larger.

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