Discontinuity in the post-processing results
 

I'm simulating the savonius turbine 2D model. In the post-processing, I observed that the contours are not continuous. I simulated used sliding mesh method. The mesh and post-processing are results are attached. The areas are in the interface are perfectly matching. I used an auto-create mesh interface feature. Please suggest a suitable solution.

Discontinuous velocity contour
 

Iam facing the same problem with impeller in a mixing tank, iam using multiple reference fame method. Has anyone faced this issue and figured out how to fix it?

I have never done something like this before, so I'm just guessing here. It may have something to do with the reference frames? Perhaps you need to show two different contours in the two different reference frame geometries in order to make them consistent. Set the min and max scale manually to be the same on each of them, then show them both at once.