Can you attached to Solidworks files so I can look at and test on my system? What version of Flow, SolidWorks, and O/S do you have?
I do similar models but have never seen this error.
That is a pretty unusual result.
What happens if you go into the surface plot definition, then select 'Options', and unselect 'Interpolate'?
Thank you for your responses.
I tried removing the interpolate option on the surface plot, but it did not affect the abnormality.
However, I created a local initial mesh with a higher mesh count and this fixed all my problems. In fact it looks like the accuracy went up.