Search found 98 matches

by Gary R
11 Feb 2021, 04:13
Forum: General
Topic: system with moving part- acoustic
Replies: 3
Views: 383

system with moving part- acoustic

Hi all; I am trying to analyze an acoustic waveguide. I have the hyperbolic waveguide, the piston and an air cylender. The three parts are assembled with FreeCAD Assembly 4 workbench. There seems to be a problem with the .step format ( doesn't like the hyperbolic curves) that doesn't allow transferi...
by Gary R
28 Jan 2021, 04:25
Forum: Installation & compilation
Topic: Problem with accessing Elmer ppa
Replies: 4
Views: 1502

Re: Problem with accessing Elmer ppa

Sorry about the long delay on answering this. Got tied up with a lot of other things. Short answer the problem persists. But, i am locked out of all of the ppa's that i've tried to use since Debian started messing around with the security. I gave up and compiled from source code. Works fine. i notic...
by Gary R
31 Oct 2020, 20:33
Forum: External tools
Topic: Meshing the flow but not the pipe
Replies: 3
Views: 1142

Re: Meshing the flow but not the pipe

Thank you kevin, Things finally clicked into place. You can't mesh nothing. I used the Part workbench and the pipe primitive. So there was nothing inside the pipe to mesh. Don't know why I didn't get this before. I guess I can blame it on my 6 month bout with vertigo. It's hard to think when you are...
by Gary R
31 Oct 2020, 03:01
Forum: External tools
Topic: Meshing the flow but not the pipe
Replies: 3
Views: 1142

Meshing the flow but not the pipe

Hi all, I have been trying to mesh the air inside of a pipe (iges attached). The pipe was created with FreeCAD. I have gmsh and Netgen and have tried both. I seem to be missing something. The general problem is how to mesh voids. I have thought about putting end caps on the tube but have tried to me...
by Gary R
31 Oct 2020, 02:35
Forum: ElmerGUI
Topic: FreeCAD .step file doesn't mesh
Replies: 14
Views: 2472

Re: FreeCAD .step file doesn't mesh

Thank you all for the help.
Gary R.
by Gary R
29 Oct 2020, 03:59
Forum: ElmerGUI
Topic: FreeCAD .step file doesn't mesh
Replies: 14
Views: 2472

Re: FreeCAD .step file doesn't mesh

I was refering to the "Help > Current Options And WorkSpace" file. I have no idea where this data resides.

Gary R.
by Gary R
29 Oct 2020, 03:05
Forum: ElmerGUI
Topic: FreeCAD .step file doesn't mesh
Replies: 14
Views: 2472

Re: FreeCAD .step file doesn't mesh

Sorry. I got sidetracked and lost the thread on this one. The gmsh file format needs to be changed to 2 instead of 10. You can find this change in the "Help > Current Options" file.This produces a .unv file but the mesh produced by gmsh has several glitches in the mesh if I start with a .s...
by Gary R
29 Oct 2020, 02:13
Forum: ElmerGUI
Topic: Adding to egmaterials.xml file
Replies: 3
Views: 882

Adding to egmaterials.xml file

It is pretty obvious how to manually add an entry to the egmaterials.xml file but has anyone compiled a more extensive list of materials that could replace the old list? Also, are the dimensions of the parameters all in MKS units?

Gary R.
by Gary R
21 Oct 2020, 23:51
Forum: ElmerGUI
Topic: FreeCAD .step file doesn't mesh
Replies: 14
Views: 2472

Re: FreeCAD .step file doesn't mesh

Thanks for the reply. I tried using FreeCAD to gmsh to ElmerGrid to ElmerGUI. I did the meshing with gmsh and converting .msh to .mesh with ElmerGrid 14 2. The meshing seemed to work fine but ElmerGUI refused to accept the .mesh files. I got the following error: Loading elmer mesh files Unknown elem...
by Gary R
21 Oct 2020, 21:15
Forum: ElmerGUI
Topic: FreeCAD .step file doesn't mesh
Replies: 14
Views: 2472

FreeCAD .step file doesn't mesh

Hi all, Debian 10 host with Linux Elmer/Mint guest on VirtualBox. AMD64 x 4 processor. Using FreeCAD 0.19 AppImage and the latest ElmerGUI, I have been trying to setup a Helmholtz resonator for some audio simulations. I built the resonator with FreeCAD and exported the file as a .step file. ElmerGUI...