陽イオン界面活性剤水溶液の管内流動とレオロジー [in Japanese] Pipe Flow and Rheology of Cationic Surfactant Solutions [in Japanese]
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Drag reduction caused by the addition of a cationic surfactant (Ethoquad O/12) and rheological characteristics of the surfactant solutions were experimentally investigated. It was found that the addition of 200-500 ppm Ethoquad O/12 was enough to obtain an effective drag reduction. This amount of addition was much lower than the previous reports. Also, Ethoquad O/12 caused a significant drag reduction even at lower temperature range adequate for cooling system. Apparent viscosity of Ethoquad O/12 solutions was measured over a wide range of shear rate. Numerical analysis for laminer pipe flow with radial variation of apparent viscosity resulted in partially successful explanation of velocity profile of surfactant pipe flow.
- Chemical engineering
Chemical engineering 22(1), 221-225, 1996-01-20
The Society of Chemical Engineers, Japan