Search found 40 matches

by homerun4711
04 Jul 2019, 09:17
Forum: General
Topic: Using Elmer for simulation of ultrasonic tomography system
Replies: 4
Views: 3816

Re: Using Elmer for simulation of ultrasonic tomography system

Hello Peter, thanks a lot for your helpful reply. Do you think it is also possible to use small wave numbers and just squeeze the solution along the time domain to scale sonic to ultrasonic? Maybe I am missing something about reflectivity and spacial resolution though... :) Basically I just need a c...
by homerun4711
29 Jun 2019, 22:49
Forum: General
Topic: Using Elmer for simulation of ultrasonic tomography system
Replies: 4
Views: 3816

Using Elmer for simulation of ultrasonic tomography system

Hello, I have a question and hope that you can help me. We are trying to get into using automotive ultrasonic sensors for 3d environment mapping. The idea is similar to medical 3d ultrasonic devices or how bats map the environment. You send pulsed ultrasonic waves into different directions (the bat ...
by homerun4711
26 Mar 2017, 12:58
Forum: ElmerSolver
Topic: Heat transfer 1D example
Replies: 3
Views: 3521

Re: Heat transfer 1D example

Ok, thanks for the hint. While I was looking for a simple way to run the calculation I came across Energy2D (http://energy.concord.org/energy2d/). It is a click'n'play FEM sandbox for educational purposes. You can add bodies by drawing them. I tried it and it looks like a very handy tool for first e...
by homerun4711
24 Mar 2017, 15:17
Forum: ElmerSolver
Topic: Heat transfer 1D example
Replies: 3
Views: 3521

Re: Heat transfer 1D example

Found it :)
ElmerGUI/samples/

But does someone have other examples?
by homerun4711
24 Mar 2017, 15:15
Forum: ElmerSolver
Topic: Heat transfer 1D example
Replies: 3
Views: 3521

Heat transfer 1D example

Hello, I need to run a 1D heat transfer calculation to simulate the heating of a steel plate. Heat shall be transfered from a hot concrete layer through a rubber layer to the steel plate. I found an example called "HeatIntrusion1D" in the ElmerTutorials.pdf and thought I start with this. B...
by homerun4711
05 Apr 2016, 11:51
Forum: General
Topic: Python and Elmer
Replies: 9
Views: 10123

Re: Python and Elmer

Hello Matthias, I just saw that Salome is available for Windows now, nice. Last time I checked, about 2012, it wasn't and my company computer runs Win7. Will take a look. About a wrapper for Elmer, is there a list of all available input variables somewhere, maybe with default values, that could be p...
by homerun4711
04 Apr 2016, 14:24
Forum: General
Topic: Python and Elmer
Replies: 9
Views: 10123

Python and Elmer

Hello,

has someone ever written a Python wrapper or another Python interface for Elmer?

I was just thinking if this might be useful for me, maybe with MeshPy (tetgen)
for mesh generation and Mayavi (VTK, now working with Python 3)
for visualization.

Kind regards,
Markus
by homerun4711
14 Apr 2014, 15:41
Forum: ElmerSolver
Topic: Acoustic examples
Replies: 1
Views: 2538

Acoustic examples

Hello, I want to model a noise protection system integrated in the facade of a house and I'd like to start with some simple examples like the ones shown on http://www.csc.fi/english/pages/elmer/examples: Acoustics: Acoustic scattering A simple wave equation example The Doppler effect Acoustic losses...
by homerun4711
14 Dec 2012, 13:50
Forum: ElmerSolver
Topic: Calculations on very large mesh
Replies: 5
Views: 4183

Re: Calculations on very large mesh

Hello Peter, thanks for your reply. I had a look at the Master Thesis you mentioned. But contrary to the mesh in the thesis our geometry is very long (5000 m) but at some boundaries it is only 3 m high. So I guess if we go with a very coarse mesh at the boundary we could set a mesh width of 1.5 m or...
by homerun4711
12 Dec 2012, 11:43
Forum: ElmerSolver
Topic: Calculations on very large mesh
Replies: 5
Views: 4183

Re: Calculations on very large mesh

Hello, thank you for the reply. My OS is Win7-64bit with 8GB of RAM. I will take a look if the crash is memory related. I know that Elmer is used to calculate glaciers, but I guess the flow speed there leads to a nice Courant number :) In my case we will use wind speeds of about 10 m/s and I am not ...