pick a trailing edge for he source of hte flow trajectories. I did not download or look at your model. Post a picture of what you got. What you are expecting could be an issue. Depends.
Hi, there was no flow simulation project in that file that you attached. Are you doing this as an external flow problem? Please post pictures that show what you're seeing and a model with the flow project in it.
Based on the description, the flow going through the arrow, it is very possible you've set this up as an internal analysis and as such, the flow would only be on the inside the arrow instead of the outside. I'd recommend checking out some of the tutorials before going too much further.
Also, can you elaborate on what you mean by "turbulent flow trajectories"? Flow trajectories are flow trajectories. They aren't turbulent or laminar. They plot parameters and show you where a particle would travel if you could watch it and track it. It may show areas of turbulence or laminar flow but they aren't specifically one or the other.