How to Compare Pressure Contours from OpenFOAM and ANSYS Fluent Simulations to Generate a Difference Plot?

ParaView Support
1

I ran CFD simulations on the same mesh using both OpenFOAM and ANSYS Fluent. Now, I want to compare the pressure contours by generating a difference plot (i.e., pressure_OpenFOAM - pressure_Fluent).

What I Tried:

  1. Exported the Fluent results as a CGNS file and imported it into ParaView.
  2. Loaded the OpenFOAM results directly into ParaView.
  3. Used the Append Attributes filter to combine the datasets.
  4. Applied the Calculator filter to compute pressure_OpenFOAM - pressure_Fluent.

However, the resulting difference contour appears incorrect. What should i do? I have attached the file to reproduce the case in paraview.
reproduce_case.pvsm (566.8 KB)

2

Probably i found the answer. https://youtu.be/jrXS9pohJiI
Let me know if there is a better way to do it.