Filtering out background waves
 

Dear friends,

Now I am using a twofluidmixingfoam to calculate a linearly stratified fluid flow pass around a sphere. The result is in the attachment. The are inlet waves on the background from the inlet, which are difficult to delete by setting the boundary conditions. So I want to filtering them after the calculation. If it is possible to make it by paraview?

Thank you for your help.

Best regards,

Chengan

I have point out the background wave by black circle