界面活性剤水溶液のレオロジー特性が二次元流動場のエネルギー輸送に与える影響

抄録

Cationic surfactants dissolved with counter-ion suppliers in water form drag reducing worm-like micelles. The drag reducing micelles deform vortices in turbulent flow, which decrease turbulent intensity. The relationship between a characteristic time scale in turbulent flow and that of surfactant solutions such as relaxation time is a key to understand the phenomena. Therefore, we observed how the relaxation time of each drag reducing surfactant solution affected the vortex deformation in a two-dimensional (2D) flow. Subsequently, the effects of the relaxation time on turbulent statistics was discussed.