For cell-centered linear solvers, if the lowest AMR level in the solver is not AMR level 0, the coarse/fine interface was previously assumed to be Dirichlet. In this commit, this has been relaxed to allow for homogeneous Neumann BC at the coarse/fine interface.
For cell-centered linear solvers, if the lowest AMR level in the solver is not AMR level 0, the coarse/fine interface was previously assumed to be Dirichlet. In this commit, this has been relaxed to allow for homogeneous Neumann BC at the coarse/fine interface.