Comparative analysis problem
 

I made a duct analysis in CFX 10.0 the convergence is ok, after I made some changes in the duct because some assembly restrictions, I simulate the new duct with the same conditions but the analysis don't converge. I only want to compare the dp (preassure) of the original duct and the new duct.

All the conditions are the same, the change is the geometry This is my first analysis in CFX Please help me,

Thanks in advance.