I specified no-slip Wall boundary condition as one of the boundary conditions for my simulation. After solving, I export the velocity value along the line from wall to the free stream. I found that the velocity at the wall is not zero. In my case, it is 0.0321 m/s. Why isn't it zero? I think this might be the value at the center of the mesh next to the wall. Then how can CFX know, when it compute, that actually the velocity is zero at the wall? Thank you.

Atit

When you are in post and you want to see velocity ther's 2 options Hybrid and Conservative (I think those are the names), you can choose these 2 options by toggle on one of them. In Hybrid you should see that the velocity is zero. I hope this will help you.

Marco