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Hydrodynamic model for the viscosity of a mixture of supercritical carbon dioxide with vegetable oils in a capillary
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A hydrodynamic model for the motion of a two-layer fluid in a circular capillary is considered. It is assumed that a thin transition layer arises at the liquid boundary, which results in slippage of the layers relative to each other. The viscosity of the transition layer is considered a function of pressure and is specified by the Arrhenius formula with some changes, i.e., with increasing pressure the viscosity decreases exponentially. The proposed model is used to find the viscosity of a mixture for two liquids. A formula is derived for a mixture that differs from that previously known. A mixture of supercritical carbon dioxide and sunflower oil is considered as an example.
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