Neutron induced Swelling tutorials in ANSYS

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Discussion Overview

The discussion revolves around modeling neutron-induced swelling in the context of a fuel sub-assembly using ANSYS software. Participants are seeking guidance on how to input swelling parameters and develop appropriate models within the software.

Discussion Character

  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • Gautham is working on a project related to fuel sub-assembly bowing due to thermal swelling gradients and is seeking help with inputting swelling parameters in ANSYS.
  • Some participants mention that swelling is correlated with lattice damage and displacements per atom (dpa), which depend on fast fluence, irradiation temperature, dose rate, and compositional factors.
  • One participant suggests developing a user routine, such as USERSW, to model swelling in ANSYS and recommends consulting the ANSYS documentation for user programmable features.
  • Gautham expresses a need for sub-routines or tutorials related to swelling modeling in ANSYS, indicating a lack of available references.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the specific methods for inputting swelling parameters in ANSYS, and multiple approaches are suggested without agreement on a definitive solution.

Contextual Notes

There are limitations regarding the availability of specific sub-routines and tutorials for swelling modeling in ANSYS, as well as the dependence on various factors influencing swelling that are not fully resolved in the discussion.

bhaskarhebbar
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Dear all,

I am gautama currently pursuing my M.Tech in Fast breeder reactor at IGCAR. The project is based on the fuel sub assembly bowing due to thermal, swelling gradients. Using a FEM software ANSYS i have modeled the Sub assembly, but i am not able to give swelling parameter in ANSYS. Anyone who knows it please help me. You can also send me a PM.

Thanks in advance
Gautham, Manipal University
 
Last edited by a moderator:
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bhaskarhebbar said:
Dear all,

I am gautama currently pursuing my M.Tech in Fast breeder reactor at IGCAR. The project is based on the fuel sub assembly bowing due to thermal, swelling gradients. Using a FEM software ANSYS i have modeled the Sub assembly, but i am not able to give swelling parameter in ANSYS. Anyone who knows it please help me. You can also send me a PM.

Thanks in advance
Gautham, Manipal University
Is one modeling SS316L?

Usually, swelling is correlated with the lattice damage, or displacements per atom (dpa), which itself often correlated to fast fluence (which is spectrally dependent). There are also compositional, irradiation temperature and dose rate (and history) influences, so one has to be careful when applying models obtained from the literature.
 
Thank you for your reply.Ya the material is SS316 LN. But i am still not clear how to input swelling in ANSYS??
 
Last edited:
One has to develop a user routine, e.g., USERSW, to model swelling in ANSYS.

Read the ANSYS documentation - Guide to ANSYS User Programmable Features.
 
Thanks for the info..Sir, do you have any sub routines to develop a model?? can you pls mail me tat?? bcs no sub routines are available to refer and develop my model.And also if u have any swelling tutorials pls mail me..
 

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