Coupling solid-BEM with fluid-FEM in Elmer

Discussion about coding and new developments
Post Reply
hamed
Posts: 110
Joined: 12 Oct 2009, 18:28

Coupling solid-BEM with fluid-FEM in Elmer

Post by hamed » 29 Sep 2015, 17:41

Dear Elmer group
Hi
As you know, a boundary element solver was provided in Elmer previously.
Now we intend to extend this boundary element solver for simulation of an elastic solid and couple this solid-BEM solver to fluid-FEM solver of Elmer for FSI simulations.
Considering this, we’ll be grateful if somebody familiar with BEM and FEM of Elmer can give us a vision of the feasibility of this coupling and its hardship.
Regards, Hamed

raback
Site Admin
Posts: 3487
Joined: 22 Aug 2009, 11:57
Antispam: Yes
Location: Espoo, Finland
Contact:

Re: Coupling solid-BEM with fluid-FEM in Elmer

Post by raback » 30 Sep 2015, 09:22

Hi Hamed

For BEM the multipole expension is critical in achieving decent scalability. The current implemention for BEM in Elmer can be considered a toy model since the full matrix is assembled limiting the size of the problem quite severely. To me this is the main shortcoming. Currently there is no activity that I know of around the BEM solvers so finding guidance could be difficult.

-Peter

Post Reply