Hi!
I'm junior in COMSOL and try to compute electrical potential of electrodes between these electrodes on cross-plane in vacuum chamber. Vacuum in this chamber is very high. The question is how to compute potetial between two cylinders? Did I need to create a some space (sphere around electrodes for example) with air material with low pressure and then compute and then plot on needed plane? If I try to plot without surrounding air sphere COMSOL says that plot is empty. If I create a sphere, then COMSOL creates a lot of unnecessary mesh elemets and computation time is greatly increasing.
Thanks!