When loading the results in the cfx-post a message box appears: an appropriate report template was found for this case. Turbine rotor report. Load y/n? I choose yes, but while loading, it distorts the mesh and all the reports end up wrong. To be exact the polyline at the 20% and 80% span is not constant but it looks more like a sin(x) plot. I don't know what is causing it and what is affected by it! How can I fix that?

Make sure your turbo initialization is correct. If it's not, the meridional space can be all messed up, and span plots can look strange.

But at the time I only run steady state with frozen rotor and so there is no initialization(first run of a series). The problem appeared after increasing the number of blades that were to be modeled, for the rotor. I did that so the pitch would get closer to unity.