[cgerrity]

Hello,

I am trying to specify the boundary conditions on a rectangular solid, with N thin strips on one side who are at a constant potential, and N similar strips on the opposite side that are perpendicular to the first set. All strips on the same side have the same potential. There are gaps between the strips themselves and between the strips and the edges. The regions in between the strips should be type zeroGradient, probably.

So I'm trying to figure out the best way to do this *without* creating N distinct patches on each side (N is pretty large) and trying to negotiate the strange mesh I'd have to make.

Is there a way to implement this using codedFixedValue as a patch type for two faces of the block and then create some sort of piecewise function representing the strips? E.g. something like:
if region of boundary patch is between (x, y) and (x+a, y+b), then potential = some constant.
else boundary patch is zeroGradient.

Also, is there a way to specify an arbitrary potential as a boundary condition (e.g. by reading in some scalar field via a text file)? Can I manually set the boundary condition value for all individual (x,y) on a patch?

Thank you so much for your help.