- #1

- Summary:
- confused about the boundary equation in the form of FDM at a node located right at the interface of three areas with different permeabilities.

in Finite Difference Method (FDM), the boundary conditions can be implemented by applying the continuity of parallel component of magnetic field intensity. when it comes to the interface of two areas, it is done at ease, but consider this case at the red point:

in FDM we exactly require on equation for each node. however in this case, both $H_x$ and $H_y$ components must be continous. although I am confused about the equation at this node, I cannot find one equation to satisfy all conditions at this point.

any suggestions? thanks.

in FDM we exactly require on equation for each node. however in this case, both $H_x$ and $H_y$ components must be continous. although I am confused about the equation at this node, I cannot find one equation to satisfy all conditions at this point.

any suggestions? thanks.