How to constrain R tensor in RSM models?
 

Dear Foamers,

I am trying to run simulations with Reynolds stress models such as SSG and LRR, using interfoam. However, it seems that the modelled R stress tensor can sometimes vary a lot and cause stability issues. Thus I would like to constrain the R tensor.

For that I wonder if it would be possible to add some constrains in fvOptions or do I have to edit the source code? Any hints would be appreciated, thank you for your time in advance.