Grid refinment and wall friction

Dearall,
I have few questions:

1- How to refine a mesh (for example radial meshing inside a cylinder as shown

2- When I simulated a flow inside an eccentric annulus the axial velocity was high at the narrowest section however it should be high at the upper section
This is what we are expecting:

3- Also when I select the fluid velocity output, when I track the fluid velocity I don’t see my Boundary condition (wall velocity is zero)

Thanks!