urf

rsi

Hi! Again a question on URF (using commercial code). I've searched past threads and found some q&a on URFs but still I feel there are uncertain answers. I want to ask again for advise (in case there are new updated findings):

1) I've run a model (one model) with 2 different URFs to reach convergence target of 0.001.

2) The result is slightly different by 7-10% although the volume mesh domain is exactly the same.

3) In case of default URF cannot reach convergence (in more complex geometry for example), how confident are we with the result when we changed the URF to lower values. I mean, is that result reliable when we can't compare with a default URF?

Should I increase back the URF in the second case back up to original URF somewhere along the way?