Search found 665 matches

by kevinarden
Today, 00:39
Forum: ElmerGUI
Topic: FreeCAD .step file doesn't mesh
Replies: 3
Views: 21

Re: FreeCAD .step file doesn't mesh

the latest gmsh release went to a new file format that Elmer isn't up to yet. You can change the format of the gmsh file. using mesh.format option http://www.elmerfem.org/forum/viewtopic.php?f=4&t=6633&p=21513&hilit=gmsh+format#p21513 you should also use -autoclean ElmerGrid 14 2 myfile.msh -autoclean
by kevinarden
Yesterday, 23:32
Forum: ElmerGUI
Topic: FreeCAD .step file doesn't mesh
Replies: 3
Views: 21

Re: FreeCAD .step file doesn't mesh

gmsh and salome meshed the geometry with no issues. ElmerGUI is not the most robust mesher. I would recommend using gmsh or salome to create meshes, both are translatable to Elmer by ElmerGrid.

Salome requires exporting a *.unv file
by kevinarden
Yesterday, 12:35
Forum: ElmerSolver
Topic: Circle Coordinates in SaveLine
Replies: 3
Views: 21

Re: Circle Coordinates in SaveLine

From the source code, 7 values

Base point of cylinder
R0 = PointCoordinates(Line,1:3)

! Normal of cylinder (aligned with axis)
dR = PointCoordinates(Line,4:6)

! Radius of circle
Radius = PointCoordinates(Line,7)
by kevinarden
16 Oct 2020, 21:01
Forum: ElmerSolver
Topic: Segment error in MagnetoDynamicsCalcFields after PPA update on October 16 2020
Replies: 3
Views: 44

Re: Segment error in MagnetoDynamicsCalcFields after PPA update on October 16 2020

My guess is that it did more automatic updates than just Elmer. Open source libraries depend on other open source libraries. Updates of one is not coordinated nor necessarliy compatible with updates of others. It you are automatically updating all, then the only possible outcome is incompatiblity du...
by kevinarden
15 Oct 2020, 13:00
Forum: ElmerSolver
Topic: There are no Solvers in the System
Replies: 4
Views: 58

Re: There are no Solvers in the System

If you are building the sif with ElmerGUI you need to check the active solver box when you create an equation.

try doing some of the Elmer tutorial files

https://www.nic.funet.fi/pub/sci/physics/elmer/doc/
by kevinarden
15 Oct 2020, 01:38
Forum: ElmerSolver
Topic: There are no Solvers in the System
Replies: 4
Views: 58

Re: There are no Solvers in the System

need to post your sif file and if possible your mesh
search this forum, this solution has appeared many times.
by kevinarden
13 Oct 2020, 14:46
Forum: ElmerSolver
Topic: BDF order setting on the example "Vortex shedding"
Replies: 8
Views: 116

Re: BDF order setting on the example "Vortex shedding"

I beleive that the temperature is calculated at the nodes, but the node on the outer sking of the cylinder is also the node attached to the air element. Therefore if the air is cooler than the cylinder than I believe the nodal temperature is the average of all of the elements attached to it. I have ...
by kevinarden
07 Oct 2020, 14:43
Forum: ElmerSolver
Topic: BDF order setting on the example "Vortex shedding"
Replies: 8
Views: 116

Re: BDF order setting on the example "Vortex shedding"

I believe the BDF order increase the staibility of the solution, i.e if the solutions converges or diverges. The increased order comes with a computational cost. I do not think the order effects the accuracy of the solution unless you modify the convergance criteria for a given solution. So there is...
by kevinarden
05 Oct 2020, 11:20
Forum: ElmerGUI
Topic: Variable boundary condition execution
Replies: 15
Views: 449

Re: Variable boundary condition execution

Boundary Condition 3 Target Boundaries(1) = 14 Name = "BoundaryCondition 3" Temperature = 1023.001 (Either Delete this) External Pressure = Variable " Temperature" (or you have to pick something here that is not a constant) Real MATC " exp(-7750/tx +12.79 - 1.41 * tx)*101300/760 Heat Flux = Variable...
by kevinarden
05 Oct 2020, 11:15
Forum: Installation & compilation
Topic: Problem with accessing Elmer ppa
Replies: 3
Views: 127

Re: Problem with accessing Elmer ppa

this system is using apt-secure and since there is no release file in the repository it is disabled by default, you can by pass the disable on apt-get by using the option

Pass the --allow-unauthenticated option to apt-get as in:

sudo apt-get --allow-unauthenticated upgrade