Consider solid part in the electrical arc module

[husanhao]

Dear all,

I would like to simulate the electrical arc between two electrodes by using Code Saturne 3.0.0. I got the results without considering the electrodes (solid) into the computational domain.

Now, I would like to consider the electrodes (solid, cooper or graphite) into my simulation.
I already introduces some physical properties of the solid into the computational domain by using some subroutines, but I got some error. So, I want to know if I only care about the fluid (air) heat transfer, do I need to couple SYRTHES/CS-3.0? Can I only use CS-3.0 to reach my goal?

The attach picture is my mesh.
Thanks for your help