[HLYBoy]

I have a converging-diverging nozzle with 'pressure-inlet' and a 'pressure-outlet' and are using a no slip condition at the wall.

At my inlet, I have a velocity profile across it, indicating that I have some sory of boundary layer as I have a velocity profile across the inlet. But, as it is the inlet, I should not have a boundary layer because there has not been any boundary layer growth or anything.

Does any one know why this would be the case? The image shows what I mean. The x axis represents the y distance away from the centreline. There is a velocity profile when there shouldn't be one. I have also attached the velocity vectors at the inlet.

Thanks in advance!