Toy hierarchical problem

Numerical methods and mathematical models of Elmer
sspickle
Posts: 12
Joined: 10 Apr 2024, 14:01
Antispam: Yes

Re: Toy hierarchical problem

Post by sspickle »

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

Thank you!
kevinarden
Posts: 2419
Joined: 25 Jan 2019, 01:28
Antispam: Yes

Re: Toy hierarchical problem

Post by kevinarden »

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.
raback
Site Admin
Posts: 4855
Joined: 22 Aug 2009, 11:57
Antispam: Yes
Location: Espoo, Finland
Contact:

Re: Toy hierarchical problem

Post by raback »

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
sspickle
Posts: 12
Joined: 10 Apr 2024, 14:01
Antispam: Yes

Re: Toy hierarchical problem

Post by sspickle »

Great. Thank you so much!
Post Reply