Cyclic Boundary Condition

Luiz Eduardo Bittencourt Sampaio (Sampaio)

Hi all,
If I define two planes (paralel planes) as cycle boundaries, I know the velocity will be the same in the "periodic" points. But what about the pressure? Will it be periodic also? Or is its gradient that is periodic?

(I tried to dig into the code to try to figure out this myself, but I think I am still not able to do that... Where should I look for this thing? Should be in the routines that construct the matrix right? Where exactly?)

Thanks,
Luiz