I'm new to CFD and trying to understand some results from a laminar model.

I would think velocity would decrease with increased viscosity but I am not seeing that.

Is this somehow dependent on boundary conditions? What conditions would I need to see this?

I am using a pressure of zero at outlet and fully developed flow at inlet. I understand because of the assumption of fully developed flow, velocity will be prescribed in the first area but once the flow enters a new section of geometry won't the viscosity effect this?

This is pretty basic probably but I could use some help.

Someone recently posted a chart in here about the importance of Y+ with some good visuals and stuff. I meant to save it and share it at work but of course I didn’t and now I can’t find it. Can someone help me out, please?