Abstract
Two experimental campaigns were conducted to observe mixing and stratification processes of two immiscible fluids by gravity. Parametric study reviles the effects of two key fluid properties: kinematic viscosity (or molecular weight) for silicone oil and density (or concentration) for sodium chloride aqueous water. After withdrawal of a vertical partition plate, two liquids intersects earlier at the center, while the fluids stick on the walls. Another experiments were conducted with the salt water injecting on to the silicone oil pool. The kinematic viscosity and density difference affect three-dimensional mixing and stratification processes significantly. These visual databases are suitable for a code validation on the interfacial phenomena. Key Words : Gravity-driven stratification, Injection, Mixture, Phase separation, Liquid-liquid, Flow visualization
