Robert

Hi again, Richard. Thanks for the feedback. I just recently got everything to compile on my machine and I'm a little afraid to roll back, but I could give this a shot in a backup directory. So, is it safe to assume that the major refactoring that took place after 1.9 introduced a few bugs? I'm just curoius as to why 3.0 is not the recommended version. Is work continuing on 3.0? As of today, it seems that the most recent commit was late 2019.

Does anyone have any idea why the solutions to static magnetic problems in xfemm would appear in line with FEMM results, but harmonic solutions at any frequency give only NaN for solution components? The harmonic problems differ from the static problems only by their value for frequency. This is true for both planar 2D and axisymmetric problems. When I write the fem file associated with the harmonic problem with writefemmfile, FEMM opens and solves it without issue. What might be going on here? Here's...

Is there a tool in xfemm to remove segments? I see one for removing nodes, but not segments. Based on the code for deletenode_mfemm, it looks like eliminating an entry in the Segments or ArcSegments arrays must be followed by a renumbering of elements in order to work properly. Is the code in this file essentially all that is needed to delete segments? Is there any reason why this hasn't been broken out into its own function?

Is there a tool in xfemm to remove segments? I see one for removing nodes, but not segments. Based on the code for deletenode_mfemm, it looks like eliminating an entry in the Segments or ArcSegments arrays must be followed by a renumbering of elements in order to work properly. Is the code in this file essentially all that is needed to delete segments? Is there any reason this hasn't been broken out into its own function?

I wrote an elementary script in the style of other xfemm functions to solve the basic problem for which I started this thread. I've attached the code here for anyone to use. Caveat emptor: 1. I'm no software engineer, and I wrote this on a tight time budget. I've only performed the most cursory debugging. 2. Magnetics problems only (although adapting this code for use with the other solvers doesn't seem difficult since they share so much code in common. See init.lua.) 3. The center point and radius...

I know this is an old thread (as are most of the threads here) but I was about to post about this very same issue myself. I've noticed that there seems to be a significant difference between how FEMM and xfemm treat overlapping segments; in FEMM, overlapping segments are automatically merged, deleted, and split in such a way that you need never (or, at least, I never) worry about overlapping segments; the concept was entirely new to me when I started using xfemm. I've been reading through the IABC...

There's a very useful wizard in FEMM, "Create IABC Open Boundary," which automatically constructs high-order asymptotic boundary conditions using the problem geometry and user inputs. Is this tool available somewhere in xfemm? I tried searching the xfemm source directories for "ABC" as well as for one of the idiosyncratic permeability coefficients, but all that returns is init.lua, which I believe is FEMM source. It seems rather straightforward (albeit time-consuming and prone to transcription error)...

There's a very useful wizard in FEMM, "Create IABC Open Boundary," which automatically constructs high-order asymptotic boundary conditions using the problem geometry and user inputs. Is this tool available somewhere in xfemm? I tried searching the xfemm source directories for "ABC" as well as for one of the idiosyncratic permeability coefficients, but all that returns is init.lua, which I believe is FEMM source. It seems rather straightforward (albeit time-consuming and prone to transcription error)...