Hey Guosheng, There is always one pronounced direction. I am actually not sure what the policy is for that. I think it is always from the element with the lower element number to the higher one. So it essentially depends on the mesh generator. I am not sure if there is a rule, but in your example the elements on the left always have a smaller number then those on the right. But I have to pass that question to Joachim or another Netgen-expert, sorry. Concerning the Mortaring with the FacetFESpace:...
Dear Guosheng, The skeleton-BFI together with the BND flag is only implemented for domain boundaries. It expects that only one aligned volume element exists. In the implementation it gets a list of neighbors (here two) and only takes the first one (it does not expect a second in the list). The case with two neighbors is a "regular" skeleton-BFI with VOL flag. Your case, where you only want to treat jumps across an interface is not treated straight-forwardly, yet. Attached is a version with a cheap...
Dear Guosheng, The skeleton-BFI together with the BND flag is only implemented for domain boundaries. It expects that only one aligned volume element exists. In the implementation it gets a list of neighbors (here two) and only takes the first one (it does not expect a second in the list). The case with two neighbors is a "regular" skeleton-BFI with VOL flag. Your case, where you only want to treat jumps across an interface is not treated straight-forwardly, yet. Attached is a version with a cheap...
Dear Guosheng, The skeleton-BFI together with the BND flag is only implemented for domain boundaries. It expects that only one aligned volume element exists. In the implementation it gets a list of neighbors (here two) and only takes the first one (it does not expect a second in the list). The case with two neighbors is a "regular" skeleton-BFI with VOL flag. Your case, where you only want to treat jumps across an interface is not treated straight-forwardly, yet. Attached is a version with a cheap...
Hi Guosheng, If I understood you correctly you can do it this way: for i,freedof...
Dear Sander, Perhaps I confused you more than I intended? I am not sure what you...
Dear Sander, The issue that you had is related to the way a function is evaluated,...
Dear Sander, The segmentation fault happens when Netgen tries to draw surface values....