高圧高速液流の微粒化の研究 第1報

抄録

The aim of this study is to show more quantitatively the factors that affects the atomizing character of the high speed liquid jets, and to make better injection nozzles for internal combustion engines. In this paper, we observed the mechanism of dripping, laminar flow, turbulent flow and spray of issuing jets by means of ultra-rapid photography. Changing the kinds of liquid, many ultra-rapid pictures were taken for various issuing velocities, and the transition points of dripping, laminar flow, turbulent flow and spray were cleared. The empirical formula for the transition velocity from dripping to laminar flow is given by [numerical formula] from the consideration of dimensional relation.