Re: PMSM Simulation from Pavel in ElmerFEM 9.0
Posted: 04 Jan 2022, 19:05
Hi
The combination of "Discontinuous Boundary" and "Mortar BC" is a rare one. The 1st keyword duplicates the nodes and thereby makes it possible to separate the rotor and stator at the interface. Otherwise one could not rotate the mesh.
The BC elements are duplicated such that you can create a mortar boundary between them. It may be that the index for that boundary is by construction given the index given by the "mortar bc". So in this case the index is given 1st and then the boundary is created when usually it is the other way around.
This is a little obscure. It may be easier to understand what is happening if the mesh is discontinuous at the interface already after meshing.
-Peter
The combination of "Discontinuous Boundary" and "Mortar BC" is a rare one. The 1st keyword duplicates the nodes and thereby makes it possible to separate the rotor and stator at the interface. Otherwise one could not rotate the mesh.
The BC elements are duplicated such that you can create a mortar boundary between them. It may be that the index for that boundary is by construction given the index given by the "mortar bc". So in this case the index is given 1st and then the boundary is created when usually it is the other way around.
This is a little obscure. It may be easier to understand what is happening if the mesh is discontinuous at the interface already after meshing.
-Peter