Effects of Temperature and Concentration on Rheological Characteristics of Surfactant Additive Solutions

The shear viscosity of turbulent drag-reducing surfactant solution was measured as a function of concentration, shear rate and temperature by using an AG-G2 rheometer (TA Instruments, New Castle, USA). The experimental results showed complicated rheological behavior with the concentration in large. The Bird-Carreau model was found to fit well to the measured rheological results. The characteristics for the parameters η0, η∞ and λ dependence on temperature were also studied.