Search found 395 matches

by kevinarden
Yesterday, 20:57
Forum: ElmerSolver
Topic: Simulation of the force between two magnets
Replies: 10
Views: 131

Re: Simulation of the force between two magnets

With the two_bodies geometry and the case.sif provided, modified to center the 0,0 between the bodies the force reported for different mesh sizes is

Element Size Force
0.0009 472
0.00045 870
0.0001 1212
by kevinarden
26 Jan 2020, 14:14
Forum: ElmerSolver
Topic: Closed coil with core simulation
Replies: 11
Views: 101

Re: Closed coil with core simulation

With this sif I get a magnetic field force and nodal forces
mycase.sif
(5.43 KiB) Downloaded 4 times
mag_field.png
(231.89 KiB) Not downloaded yet
nodal_force.png
(155.01 KiB) Not downloaded yet
by kevinarden
26 Jan 2020, 13:48
Forum: ElmerSolver
Topic: Closed coil with core simulation
Replies: 11
Views: 101

Re: Closed coil with core simulation

I looked at one of the examples of far field 3D boundary conditions for magnetism and it was

Boundary Condition 1
Target Boundaries(6) = 17 18 19 20 21 22
Name = "Infinity"
AV {e} 3 = Real 0
AV {e} 2 = Real 0
AV {e} 1 = Real 0
AV {e} = Real 0
End
by kevinarden
25 Jan 2020, 04:03
Forum: ElmerSolver
Topic: unspecified extra 't' in 'Output File Name'
Replies: 4
Views: 50

Re: unspecified extra 't' in 'Output File Name'

The same is true for me, but I am not sure when it changed. I get the nightly updates.

Kevin
by kevinarden
25 Jan 2020, 03:56
Forum: ElmerGUI
Topic: ElmerGUI Tutorial 12 - Interaction between fluid flow and elastic obstacle
Replies: 7
Views: 42

Re: ElmerGUI Tutorial 12 - Interaction between fluid flow and elastic obstacle

Not so for me. I am on Linux Mint 19.3 which is based on Ubuntu 18.04
by kevinarden
24 Jan 2020, 02:18
Forum: ElmerSolver
Topic: Closed coil with core simulation
Replies: 11
Views: 101

Re: Closed coil with core simulation

Also this post about driving a plate with a magnet.

viewtopic.php?f=4&t=6930
by kevinarden
24 Jan 2020, 02:16
Forum: ElmerSolver
Topic: Closed coil with core simulation
Replies: 11
Views: 101

Re: Closed coil with core simulation

First thoughts are the mesh is too coarse for meaningful results. Would suggest try to do a 2D case or asymmetric before tackling 3D. You may be interested in this post which extends a magnetic field tutorial to magnetic force and applying the force to a body. http://www.elmerfem.org/forum/viewtopic...
by kevinarden
24 Jan 2020, 02:00
Forum: ElmerGUI
Topic: ElmerGUI Tutorial 12 - Interaction between fluid flow and elastic obstacle
Replies: 7
Views: 42

Re: ElmerGUI Tutorial 12 - Interaction between fluid flow and elastic obstacle

I used Elmer Version 8.2 on Windows and the tutorial worked
I used Elmer Version 8.3 on The Elmer Virtual Machine (VM) and the tutorial worked
I used Elmer Version 8.4 latest update on Linux and the displacements are negative instead of Positive.
by kevinarden
24 Jan 2020, 01:38
Forum: ElmerSolver
Topic: Closed coil with core simulation
Replies: 11
Views: 101

Re: Closed coil with core simulation

I was able to transfer the files so I will start taking a look.
by kevinarden
23 Jan 2020, 22:24
Forum: ElmerSolver
Topic: 2d simulation of acoustic wave propagation
Replies: 48
Views: 850

Re: 2d simulation of acoustic wave propagation

The fundamental theory of finite elements is that the elements are small enough that the results do not vary across the element. I would say that Elmer is incapable of producing reliable results for such high frequencies as 40kHz, at the the same mesh density. Same is true for time step size if it i...