[mschramm]

Hello,
I am making two regions for a simulation and would like to know if it would be possible to define the two regions based on their surrounding surfaces.

Say I have two rectangles fused together (see image) and I would like all cells normal and above of S1 to be in R1 and all cells normal and above of S2 to be in R2. Would this be possible?

If not, is there a way to get variables from a separate file and use them in topoSetDict?

I ask because I will be doing multiple simulations with slightly different geometry for each and the less I have to remember to edit the better.

Thank you