I'm a bit confused about the description of the Floating Potential boundary condition in the Electric Currents mode. It says that the integral of the current into the surface is 0 (or another user-defined value) and while this is true it doesn't seem to properly define what the boundary condition actually is used for. I use it to put an unknown electric potential that is identical everywhere on a surface (i.e. the current PARALLELL to the surface is 0) which is representative to surfaces that are good conductors compared to the surrounding. As far as I can see, electric insulation would also satisfy the boundary condition as described in Comsol as it also results in a integral of 0 for the electric current normal to the surface but this give a varying electric potential over the surface. So is the 0 parallell current constraint missing from the documentation or am I misunderstanding something here?![]()
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