C324 乱流抑制効果をもつ界面活性剤水溶液のレオロジー的性質

概要

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Some kinds of surfactant solution exhibit effectiveness of turbulent suppression in high Reynolds number flows. In this study, shear and extensional viscosities of Cetyltrimethyl ammonium chloride (CTAC)/Sodium salychlate aqueous solution was experimentally investigated by use of rotational Rheometer and opposing jet Rheometer. Although shear thinning of the shear viscosity in the range of lower shear rate was observed, the viscosity was independent in high shear rate region higher than 300s^<-1>. Distinct temperature dependency of shear viscosity was revealed. Extensional viscosity measured by opposing jet geometry reached more than few tenth of shear viscosity. The ratio is one order larger than that of Newtonian fluid. Discussion was made on the mechanism of turbulent suppression and Rheological properties of the fluid.
日本流体力学会の論文
2000-07-25