How Can I Resolve a Fatal Error Description of Cell 27 in MCNP?

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SUMMARY

The forum discussion addresses a fatal error encountered in MCNP, specifically the "fatal error description of cell 27 uses 1098 words" message, which exceeds the 1000-word limit imposed by the software. The resolution involves simplifying the cell description by breaking it down into simpler Boolean expressions or creating different, less complex cells. This approach is essential for ensuring compliance with MCNP's limitations on cell description length.

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  • Understanding of MCNP (Monte Carlo N-Particle Transport Code)
  • Familiarity with Boolean expressions in geometry modeling
  • Knowledge of cell descriptions and their limitations in MCNP
  • Basic skills in problem geometry simplification
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  • Learn how to create Boolean expressions in MCNP
  • Research techniques for simplifying complex geometries in MCNP
  • Explore MCNP documentation on cell description limits
  • Investigate common error messages and their resolutions in MCNP
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MCNP users, computational physicists, and anyone involved in modeling complex geometries in radiation transport simulations.

sanjay singh
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I am running MCNP. It gives a error massage : fatal error description of cell 27 uses 1098 words. 1000 words max.

I am not able to resolve this. If anybody can explain me about this error and how to correct it. regards
 
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Is there additional detail you can provide here that might assist someone who uses MCNP to help you with this?
 
That happens when the cell description is too long. MCNP has a limit on that. Correcting this depends entirely on your problem geometry. If you can, break that cell into simpler Boolean expressions or different simpler cells.
 

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