[Archive] multiple layers

Message by EW:
Hello. I’m trying to model a multi-layer surface - 3 squares built up on top of one another with the sides of each exposed to plasma. I’m confused about what I should assign as physicals. Should each layer have both a volume and surface physical or should they just have surface physicals? Should thethe covered face of the layers be part of the surface physical if it isn’t exposed to the plasma?

Message by Sébastien Hess:
As of now, SPIS only simulates material surfaces, not internal charging. Thus, only exposed surfaces should be assigned physicals, but more important, only volumes filed with plasma should be meshed, otherwise you expose yourself to mesh error leading to crash at the initialization.