Search found 3499 matches

by raback
Yesterday, 16:54
Forum: ElmerSolver
Topic: Lua functionality in Elmer
Replies: 6
Views: 1099

Re: Lua functionality in Elmer

Hi Vikram,

No. There is just compile time flag WITH_LUA.

What is the problem having LUA active?

-Peter
by raback
04 Dec 2019, 11:44
Forum: Software development
Topic: salomeToElmer - export Salome mesh to Elmer
Replies: 14
Views: 3085

Re: salomeToElmer - export Salome mesh to Elmer

Hi, In FEM the "do nothing" BC or the "natural" BC depends indeed on the equation. When a weak form of the PDE is written a boundary integral term appears (Neumann BC). If this is not modeled it is zero. The boundary integral is typically some kind of flux (heat flux, electric current, normal force,...
by raback
04 Dec 2019, 00:47
Forum: General
Topic: Solving solid mechanics problems with material plasticity
Replies: 40
Views: 4965

Re: Solving solid mechanics problems with material plasticity

Hi,

Nice work! We are on the process of streamlining the ElasticitySolver a bit and this should make new material models to have even greater impact.

-Peter
by raback
04 Dec 2019, 00:42
Forum: General
Topic: Application fields of Elmer
Replies: 33
Views: 33893

Re: Application fields of Elmer

Hi Brando, This might be outside the capabilities of Elmer. Sloshing has been done only for fluids that do it in a civilized manner (using moving mesh & ALE formulation). Severe sloshing would be better of with VOF or SMH methods. We have levelset but it is pretty simple one and does not conserve ma...
by raback
02 Dec 2019, 11:17
Forum: ElmerSolver
Topic: how to activate Vibroacoustic Model
Replies: 4
Views: 74

Re: how to activate Vibroacoustic Model

Hi You found an incredibly old paper. ElmerFront is no longer supported. You can probably do the same with ElmerGUI, at least almost. The easiest way to redproduce the cases could be starting from test cases HelmholtzStructure* (3 cases), e.g. https://github.com/ElmerCSC/elmerfem/tree/devel/fem/test...
by raback
29 Nov 2019, 15:44
Forum: ElmerSolver
Topic: Determine exit status?
Replies: 1
Views: 38

Re: Determine exit status?

Hi unkol, There is now a small patch by Juha in "devel" branch of Elmer that returns "1" on failure ElmerSolver case.sif; then echo "SUCCESS"; else echo "FAIL"; fi This only helps to detect true errors, not nonlinear system convergence problems. If you want to create additional true Errors for conve...
by raback
25 Nov 2019, 15:08
Forum: ElmerSolver
Topic: Artery flow
Replies: 3
Views: 56

Re: Artery flow

Hi

A slightly modernized version (with internal mesh 1D mesh generation) is available as a test case:

https://github.com/ElmerCSC/elmerfem/tr ... teryOutlet

So this one is run through for every major commit.

-Peter
by raback
25 Nov 2019, 12:49
Forum: ElmerSolver
Topic: Error in `ElmerSolver': free(): invalid next size
Replies: 8
Views: 111

Re: Error in `ElmerSolver': free(): invalid next size

Hi Maike, Ok, that's good if it works. I guess this just happens to also work with the "Plane Projector" even though it looks to me like it would not. I think it creates at least redundant projections between the "wrong" sides but they are probably eliminated later due to the larger distance. I may ...
by raback
23 Nov 2019, 01:45
Forum: Bug reports
Topic: SaveLine, first two points are always in reverse order?
Replies: 2
Views: 67

Re: SaveLine, first two points are always in reverse order?

Hi Does this apply to serial cases as well? Looking at the code the serial system at least tries to do minimization of bandwidth in ordering the points. The default order is such that the code goes through elements, tags all nodes, and continues to the next element. Hence if boundary elements are in...
by raback
23 Nov 2019, 01:37
Forum: ElmerSolver
Topic: Electric field calculation and charge transport into a dielectric
Replies: 6
Views: 634

Re: Electric field calculation and charge transport into a dielectric

Hi Jeremie The conductivity can be a function of things. For example, function of x-coordinate. You can use MATC, LUA, UDF or table to generate profiles. If you want discontinuous conductivities then define different materials and given them different conductivities such that the same node will gen ...