First of all, thanks for sharing this very nice FEM solver. I am a very beginner, just to mention. I would have three questions.
My first question regards to the postprocessing of 3D hexahedral (volume) elements via the ngsolve.webgui.
When creating the mesh via:
mesh = MakeStructured3DMesh(hexes=[b]False[/b], nx=3, ny=3, nz=3)
Plotting the solution via
Draw(gfu, mesh) works fine.
But this is not the case, when using hexahedral meshes, i.e.:
mesh = MakeStructured3DMesh(hexes=[b]True[/b], nx=3, ny=3, nz=3)
Is there any possibility to plot the hexahedral mesh in the webgui? (At least, I could sucessfully export the results of the hexahedral mesh via VTKOutput and results are looking as expected.)
Please find the jupyter-notebook attached
https://ngsolve.org/media/kunena/attachments/1681/poisson-3D-problem.ipynb (I am using version number v6.2.2102).
Second question (and maybe a stupid one): if the mesh is made out of hexahedral elements, ngsolve is really using hexahedral elements (interpolation functions of hex) in the background calculations and does not split the hexes to tets)?
Third question: when converting results to vtk format (via VTKOutput) is there any possibility to also add “deformation” information of the exported mesh, as possible in the webgui for, e.g., strucutral analyses?
Thank you very much!