Hi everyone, I'd like to use the cell periodicity boundary condition for my problem, but I have some issues understanding the equation and unfortunately, it is not specified in the User's manual:
u_dst = u_src + e_avg * (r_dst - r_src)
The first part is clear, but what does the second part after the plus sign stand for. I think, it must be about preventing rigid body motion, but I don't understand, what e_avg stands for. Does anyone know, what e_avg stands for here?
Thanks Simon