Axisymmetric radiative transfer

[hilbert2]

Hi,

I'm currently working on thermal radiation modelling in my PhD studies, and one thing that's under work is a cylindrical symmetric thermal radiation solver code. The idea is to solve the thermal radiation field in an absorbing medium between concentric cylinders as an essentially 1D problem using the axisymmetry, so that you can use a smaller computational grid than when calculating an explicitly 2D field.

The code we currently have could solve an axisymmetric problem in principle, but there seems to be some kind of a bug in it at the moment and it gives some strange results.

Have any of you, by chance, seen any public domain codes that are meant to solve axisymmetric radiation fields for neutron radiation (in nuclear reactors), acoustic emission, or something else that obeys radiative transfer equations similar to those of thermal radiation? I guess neutron radiation fields behave pretty much similarly to photon radiation despite the finite half life of a neutron. Nuclear engineering is probably a field where there's little room for mistakes, so I think I could pretty confidently look at a neutron radiation code as an example of how to solve the cylindrical problem.

-hilbert2

 

[eljose79]

Hello hilbert2,

Thank you for sharing your current project and the challenges you are facing. I am not familiar with any specific public domain codes for solving axisymmetric radiation fields for neutron radiation, but I do have some general advice that may help with your current code.

First, I would recommend thoroughly reviewing your code to identify any potential bugs or errors. This could involve double-checking your equations and boundary conditions, as well as testing the code with different inputs and comparing the results to expected values.

If you are unable to identify and fix the bug in your current code, you may want to consider reaching out to other researchers in your field for assistance. They may have experience with similar problems and may be able to offer insights or suggestions for solving the issue.

Additionally, you could also look into using open-source software such as OpenFOAM or FEniCS, which have capabilities for solving thermal radiation problems in axisymmetric geometries. These software packages have a large user community and resources available for support and troubleshooting.

I wish you the best of luck with your project and hope you are able to resolve the issue with your code. Keep persevering and don't hesitate to reach out for help when needed.