Is it a problem for meshing?
 

Hi, I am Jimmy. I have simulated the model anyway, but when I change the flow direction from X-direction to Y-direction, the solver gave me this warning. I have tried to increase the parameter value which following this guide, but it did not work, but when I change symmetry boundary to periodical boundary I can run the CFX and get the result. Should I need to change the mesh?

Thank you so much for remind me.