[slawek.mikula]

Hello,

I'm struggling with the Gambit software. I was looking for the correct answer in the forum, but i think i am looking for the wrong keywords. I would be greatly appreciated for a help.

Problem:
I am modeling a vlsi chip for a thermal simulation. The chip surface is divided in many functional modules. I would like to define different boundary condition for an each area of one volume face (top) in order to define independent heat flux condition for each "module" on the chip. I cannot model it as above.

What i am doing:
- create bottom volume
- create functional module's volumes and place them on top of the bottom volume with no space between vertical faces of the modules
- create a "unite" method on all above volumes
- ... error (this creates one volume without many faces on the top of the chip)

I am doing "unite" on the volumes in order to spread temperature during simulation.

What steps should I take in order to model it correctly? Should I create inner boundary condition for each bottom-module pair and for all module-module pair ? Or there is another way ? Thanks in advance.