Hello Team, I’m working on the final core assembly for CEFR and need to rotate a hexagonal sub-assembly by 90 degrees. I’ve written the following OpenMC code to create the sub-assembly, but need assistance with the rotation aspect: import openmc angle_deg = 30.0 angle_rad = np.radians(angle_deg) …

Create an assembly universe as normally you would do, Then declare another cell → fill that cell with universe → then use the rotation attribute for that cell. assembly_cell = openmc.Cell ( fill = assembly_universe) assembly_cell.rotation = (0, 0, 90)

Hexagonal assembly

User Support

ligross May 9, 2025, 5:55pm 3

FYI I had the same strugle here. Try to check previous posts for duplicate issues Hexagonal prism aligned to z-axis

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Hexagonal assembly

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