細管からの射出による界面活性剤水溶液の液滴形成に対する動的表面張力の影響(非ニュートン(2),一般講演)

概要

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Effects of dynamic surface tension on the droplet formation of surfactant solutions were studied. Aqueous solutions of CTAB at several surfactant concentrations were used as test fluids. A droplet formed when a surfactant solution was injected from a capillary tube was investigated and the relation between the droplet diameter and the injection velocity was measured. The diameter increased with increasing the velocity at relatively low velocities because the dynamic tension also increased. However, the diameter decreases with increasing the velocity at relatively high velocities. This phenomenon can be predicted from an equation of the force balance at a capillary exit when the effect of surface tension is evaluated using the dynamic surface tension.
日本流体力学会の論文
2008-09-04