Weird pathlines on periodic sides
 

Hi!

After having performed a flow calculation on a 45 degree part of a 3D model, I got weird results when looking at the pathlines on one periodic side. Actually, the pathlines go straight forward on the periodic side whereas they sould not be like this. I checked the boudary conditions over these periodic faces but do not see any weird feature. Do you know what could be the problem? Thank you for your help

maxime