Formation of Gel-Like Shear-Induced Structure with Dosing of Dilute Surfactant Solution and Its Effect on Turbulent Channel Flow

A shear-induced structure (SIS) is formed under appropriate concentration and shear conditions in a surfactant micellar solution. In this study, we performed experiments of solution dosing fully developed two-dimensional turbulent channel flow from sintered metallic wire mesh plate attached to side wall. We investigated the behavior elongation during its passing through strong due flow. It was confirmed that dosed containing laser dye visualized by sheet, accumulated gel layer with time. Consequently, on dilute mesh, gel-like SIS formed, which majorly covered plate. The acted as sticky solid restricted channel. This continued grow while dosing, owing pressure drop significantly increased. grew rapidly even reached equilibrium thickness. After termination collapsed gradually. addition, thickness (indicating strength indirectly) strongly depended rate mesh.