Elmer Discussion Forum

Oh, that's interesting. I find it surprising that they're so different.

Thank you!

and that is going to be impacted by mesh density, the finer the mesh the closer together they are. Think of the nodes as direct claculated values and the elemental as the average of all of the nodes. If the mesh is fine enough there is no difference, but it takes more computer solve the finer the mesh.

Hi,

In electromagnetics some fields are really discontinuous so when you try to project them to nodes violence may be performed if there is a jump in material parameter values. That's why options are given to either create a nodal, cell, or discontinuous galerkin type of field. All have their merits. Within materials the convergence is true, increasing mesh resolution will make it more difficult to tell the difference. However, nodal field can never visualize real jumps properly.

-Peter

Great. Thank you so much!