A Coarse-grain Molecular Dynamics Simulation for Surfactant Aqueous Solution in Couette Flow

In this paper, the formation of micelle, velocity distribution, and rheological behavior in surfactant aqueous solution under couette flow were studied using coarse-grained molecular dynamics simulations. Simulation results show that the dynamic equilibration time becomes shorter with the increase of shear rate on the condition of the same surfactant aqueous solution concentration. If the shear rate is a constant number, the formation of a micelle was more rapid when the surfactant molecular concentration increases in the aqueous solution. When the surfactant molecular concentration keeps constant, the shear viscosity becomes smaller with the increase of shear rate, and the shear-thinning characteristic can be obtained.