Hi.
I am trying to do adaptive mesh refinement in 3D, but the refinement process appears to be inefficient in that more elements are being refined than appear necessary. The attached script (refine_experiment.py) is an example of what I mean. The initial mesh has only 54 elements. However, when I mark only the first element for refinement, the refined mesh has 384 elements (global refinement produces 432 elements). Are there additional settings I need to obtain better adaptive refinement?
Thank you,
Kevin
https://ngsolve.org/media/kunena/attachments/772/refine_experiment.py
Attachment: refine_experiment.py