My CMFD isn't working properly

I was calculating adjoint neutron flux by CMFD approach. Now it’s coming up with error that I can’t solve .Can anyone say what’s the problem here?


If your model is otherwise valid, then most likely, you have have mesh cells in your CMFD calculation outside where they should be. You might see this if you have misconfigured your mesh bounds, or if you have a non-rectangular geometry. You may find it useful to review CMFDMesh.map.

P.S. It better to include code snippets, rather than screenshots of text. Use triple backticks to insert a code block. E.g., for a Python snippet,

```python
<your code here>
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