[Cecco]

Hi,
I have simulated the flow into a centrifugal fan.
Now I have plotted the Eddy viscosity ratio (Eddy viscocity/dynamic viscosity) in order to get the thickness of the boundary layer (see the figure).
I surprised to watch that the EVR increase also outside the boundary layer.
I was expecting to see EVR=0 adjacent to the blade, then an increasing inside the boundary layer and then again EVR=0 ouside the boundary layer.

Is it strange? What do you think about? This would be that between two blades the flow is a continuing mixing?

Thanks in advance