Annular flow in pipes

[corus]

As a new user of CFD I'm trying to model the flow of water down a pipe that is inserted into a larger pipe, blocked off at one end, so that the outflow is through the annular region that is formed by the internal and external pipe. When I look at the results from the axisymmetric model in the outflow region I find that the flow is predominantly to the outer radial surface but the flow adjacent to the inner pipe (in the outflow region) runs counter to that flow like so:
_______________________________________________
<<<--- <<<---- <<<---- !
<<--- <<--- <<--- < \ !
/ <--- Outlet \ !
---> ---> ---> !
--->> --->> --->> > / !
__________________________________ !
________Inner Pipe _______________! !
--->>>> --->>>> --->>> / / !
Inlet--->>>> --->>>> --->>> / / !
-.-.-.-.-.-..-.-.-.-.-.-.-.-.-.-.-.-.-..-.-.-.! Symmetry

This seems illogical to me as the outlet region is specified as such and not as an open boundary. Is there an obvious error?

corus

 

[mfontenot29]

It would seem like the left hand side of the outer pipe has an improper boundary condition.