Which Flows Faster Oil or Water?

Above the no-slip line (H_W > WC), the oil phase flows faster than the water phase. ... At these conditions, which correspond to dispersions of oil-in-water with a water layer (DO/W&W), the water phase flows faster than the oil phase.

Why does oil flow faster than water?

Water molecules are closely packed together than the long molecules that make up oil. The oxygen atoms in water are also smaller and heavier than the carbon atoms in oil. Thus, water is more denser than the oil and it flows faster than the oil.

Which liquid flows the fastest?

Physicists surprised to find that in specially coated tubes, the more viscous a liquid is, the faster it flows. It's widely known that thick, viscous liquids -- like honey -- flow more slowly than low-viscosity liquids, like water.