Hello people,
When I use ElmerGrid to partition the mesh from the electrostatics tuturial ("TwoBalls") as follows:
Code: Select all
ElmerGrid 2 2 mesh -metis 4 -partoptim -out two-balls-mesh-partitioned -removeunused
and then calculate the solution with Elmer (using BiCGStab) and view the results in Paraview, I get a few anomalies like the one depicted in the attachment (notice the white spot on the inside of the red sphere). These anomalies occur at a single node, at the intersection of the partitions. This doesn't happen in the original tutorial, when I don't use parallelization and use only a single large mesh without any partitioning.
What is causing this? Can this be avoided somehow?
I'm using Elmer 8.4 on Ubuntu 18.04, with Paraview 5.4.1.
Thanks in advance!
Diederik